জীবনচক্র

এই টেবিলে androidx.lifecycle গ্রুপের সমস্ত শিল্পকর্মের তালিকা দেওয়া আছে।

নির্ভরতা ঘোষণা করা

লাইফসাইকেলের উপর নির্ভরতা যোগ করতে, আপনার প্রোজেক্টে গুগল ম্যাভেন রিপোজিটরি যোগ করতে হবে। আরও তথ্যের জন্য গুগলের ম্যাভেন রিপোজিটরি পড়ুন।

আপনার অ্যাপ বা মডিউলের জন্য build.gradle ফাইলে আপনার প্রয়োজনীয় আর্টিফ্যাক্টের জন্য নির্ভরতা যোগ করুন:

কোটলিন

    dependencies {
        def lifecycle_version = "2.9.4"
        def arch_version = "2.2.0"

        // ViewModel
        implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version"
        // ViewModel utilities for Compose
        implementation "androidx.lifecycle:lifecycle-viewmodel-compose:$lifecycle_version"
        // LiveData
        implementation "androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version"
        // Lifecycles only (without ViewModel or LiveData)
        implementation "androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version"
        // Lifecycle utilities for Compose
        implementation "androidx.lifecycle:lifecycle-runtime-compose:$lifecycle_version"

        // Saved state module for ViewModel
        implementation "androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version"

        // ViewModel integration with Navigation3
        implementation "androidx.lifecycle:lifecycle-viewmodel-navigation3:2.10.0-rc01"

        // Annotation processor
        kapt "androidx.lifecycle:lifecycle-compiler:$lifecycle_version"
        // alternately - if using Java8, use the following instead of lifecycle-compiler
        implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"

        // optional - helpers for implementing LifecycleOwner in a Service
        implementation "androidx.lifecycle:lifecycle-service:$lifecycle_version"

        // optional - ProcessLifecycleOwner provides a lifecycle for the whole application process
        implementation "androidx.lifecycle:lifecycle-process:$lifecycle_version"

        // optional - ReactiveStreams support for LiveData
        implementation "androidx.lifecycle:lifecycle-reactivestreams-ktx:$lifecycle_version"

        // optional - Test helpers for LiveData
        testImplementation "androidx.arch.core:core-testing:$arch_version"

        // optional - Test helpers for Lifecycle runtime
        testImplementation "androidx.lifecycle:lifecycle-runtime-testing:$lifecycle_version"
    }
    

    dependencies {
        val lifecycle_version = "2.9.4"
        val arch_version = "2.2.0"

        // ViewModel
        implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version")
        // ViewModel utilities for Compose
        implementation("androidx.lifecycle:lifecycle-viewmodel-compose:$lifecycle_version")
        // LiveData
        implementation("androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version")
        // Lifecycles only (without ViewModel or LiveData)
        implementation("androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version")
        // Lifecycle utilities for Compose
        implementation("androidx.lifecycle:lifecycle-runtime-compose:$lifecycle_version")

        // Saved state module for ViewModel
        implementation("androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version")

        // ViewModel integration with Navigation3
        implementation("androidx.lifecycle:lifecycle-viewmodel-navigation3:2.10.0-rc01")

        // Annotation processor
        kapt("androidx.lifecycle:lifecycle-compiler:$lifecycle_version")
        // alternately - if using Java8, use the following instead of lifecycle-compiler
        implementation("androidx.lifecycle:lifecycle-common-java8:$lifecycle_version")

        // optional - helpers for implementing LifecycleOwner in a Service
        implementation("androidx.lifecycle:lifecycle-service:$lifecycle_version")

        // optional - ProcessLifecycleOwner provides a lifecycle for the whole application process
        implementation("androidx.lifecycle:lifecycle-process:$lifecycle_version")

        // optional - ReactiveStreams support for LiveData
        implementation("androidx.lifecycle:lifecycle-reactivestreams-ktx:$lifecycle_version")

        // optional - Test helpers for LiveData
        testImplementation("androidx.arch.core:core-testing:$arch_version")

        // optional - Test helpers for Lifecycle runtime
        testImplementation ("androidx.lifecycle:lifecycle-runtime-testing:$lifecycle_version")
    }
    

জাভা

    dependencies {
        def lifecycle_version = "2.9.4"
        def arch_version = "2.2.0"

        // ViewModel
        implementation "androidx.lifecycle:lifecycle-viewmodel:$lifecycle_version"
        // LiveData
        implementation "androidx.lifecycle:lifecycle-livedata:$lifecycle_version"
        // Lifecycles only (without ViewModel or LiveData)
        implementation "androidx.lifecycle:lifecycle-runtime:$lifecycle_version"

        // Saved state module for ViewModel
        implementation "androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version"

        // Annotation processor
        annotationProcessor "androidx.lifecycle:lifecycle-compiler:$lifecycle_version"
        // alternately - if using Java8, use the following instead of lifecycle-compiler
        implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"

        // optional - helpers for implementing LifecycleOwner in a Service
        implementation "androidx.lifecycle:lifecycle-service:$lifecycle_version"

        // optional - ProcessLifecycleOwner provides a lifecycle for the whole application process
        implementation "androidx.lifecycle:lifecycle-process:$lifecycle_version"

        // optional - ReactiveStreams support for LiveData
        implementation "androidx.lifecycle:lifecycle-reactivestreams:$lifecycle_version"

        // optional - Test helpers for LiveData
        testImplementation "androidx.arch.core:core-testing:$arch_version"

        // optional - Test helpers for Lifecycle runtime
        testImplementation "androidx.lifecycle:lifecycle-runtime-testing:$lifecycle_version"
    }
    

    dependencies {
        val lifecycle_version = "2.9.4"
        val arch_version = "2.2.0"

        // ViewModel
        implementation("androidx.lifecycle:lifecycle-viewmodel:$lifecycle_version")
        // LiveData
        implementation("androidx.lifecycle:lifecycle-livedata:$lifecycle_version")
        // Lifecycles only (without ViewModel or LiveData)
        implementation("androidx.lifecycle:lifecycle-runtime:$lifecycle_version")

        // Saved state module for ViewModel
        implementation("androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version")

        // Annotation processor
        annotationProcessor("androidx.lifecycle:lifecycle-compiler:$lifecycle_version")
        // alternately - if using Java8, use the following instead of lifecycle-compiler
        implementation("androidx.lifecycle:lifecycle-common-java8:$lifecycle_version")

        // optional - helpers for implementing LifecycleOwner in a Service
        implementation("androidx.lifecycle:lifecycle-service:$lifecycle_version")

        // optional - ProcessLifecycleOwner provides a lifecycle for the whole application process
        implementation("androidx.lifecycle:lifecycle-process:$lifecycle_version")

        // optional - ReactiveStreams support for LiveData
        implementation("androidx.lifecycle:lifecycle-reactivestreams:$lifecycle_version")

        // optional - Test helpers for LiveData
        testImplementation("androidx.arch.core:core-testing:$arch_version")

        // optional - Test helpers for Lifecycle runtime
        testImplementation("androidx.lifecycle:lifecycle-runtime-testing:$lifecycle_version")
    }
    

নির্ভরতা সম্পর্কে আরও তথ্যের জন্য, বিল্ড নির্ভরতা যোগ করুন দেখুন।

প্রতিক্রিয়া

আপনার মতামত জেটপ্যাককে আরও উন্নত করতে সাহায্য করবে। আপনি যদি নতুন সমস্যা আবিষ্কার করেন অথবা এই লাইব্রেরি উন্নত করার জন্য কোন ধারণা থাকে তাহলে আমাদের জানান। নতুন একটি তৈরি করার আগে দয়া করে এই লাইব্রেরিতে বিদ্যমান সমস্যাগুলি একবার দেখে নিন। আপনি তারকা বোতামে ক্লিক করে বিদ্যমান সমস্যাটিতে আপনার ভোট যোগ করতে পারেন।

একটি নতুন সমস্যা তৈরি করুন

আরও তথ্যের জন্য ইস্যু ট্র্যাকার ডকুমেন্টেশন দেখুন।

সংস্করণ 2.10

সংস্করণ 2.10.0-rc01

০৫ নভেম্বর, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-rc01 প্রকাশিত হয়েছে। সংস্করণ 2.10.0-rc01-এ এই কমিটগুলি রয়েছে।

সংস্করণ 2.10.0-beta01

২২ অক্টোবর, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-beta01 প্রকাশিত হয়েছে। সংস্করণ 2.10.0-beta01-এ এই কমিটগুলি রয়েছে।

API পরিবর্তনগুলি

• ViewModelStoreNavEntryDecoratorDefault নাম পরিবর্তন করে ViewModelStoreNavEntryDecoratorDefaults রাখা হয়েছে, যার একটি 's' আছে। ( I6d27b , b/444447434 )

বাগ ফিক্স

• Lifeycle.State.CREATED এ যাওয়ার আগে মালিক যদি Lifecycle.Event.ON_DESTROY ইভেন্ট পান, তাহলে rememberLifecycleOwner আর ক্র্যাশ হবে না। ( I6f98e , b/444594991 )

সংস্করণ 2.10.0-alpha05

৮ অক্টোবর, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-alpha05 প্রকাশিত হয়েছে। সংস্করণ 2.10.0-alpha05-এ এই কমিটগুলি রয়েছে।

API পরিবর্তনগুলি

• removeViewModelStoreOnPopCallback() এখন একটি ViewModelStoreNavEntryDecoratorDefault অবজেক্টের অংশ যেখানে অন্যান্য প্ল্যাটফর্ম এবং বাস্তবায়নগুলি ডিফল্ট কল করতে পারে। ( Ia1f23 , b/444447434 )
• NavEntryDecorator এর জন্য একটি ফ্যাক্টরি হিসেবে এর কার্যকারিতা আরও ভালোভাবে প্রতিফলিত করার জন্য ViewModelStoreNavEntryDecorator একটি ফাংশন থেকে একটি ক্লাসে রিফ্যাক্টর করা হয়েছে এবং ডেকোরেটরের shouldRemoveViewModelStore প্যারামিটারের নাম পরিবর্তন করে removeViewModelStoreOnPop করা হয়েছে যাতে স্পষ্ট হয় যে এই কলব্যাকটি কেবল তখনই চালু হয় যখন backStack থেকে একটি এন্ট্রি পপ করা হয়। ( Iefdc5 , b/444447434 )

সংস্করণ 2.10.0-alpha04

২৪ সেপ্টেম্বর, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-alpha04 প্রকাশিত হয়েছে। সংস্করণ 2.10.0-alpha04-এ এই কমিটগুলি রয়েছে।

API পরিবর্তনগুলি

• LifecycleOwner কে রিফ্যাক্টর করুন যা LifecycleOwner rememberLifecycleOwner জন্য তৈরি করা যেতে পারে। ফাংশনটি এখন সরাসরি LifecycleOwner রিটার্ন করে। এই মালিককে একটি সাব-কম্পোজিশনে প্রদান করতে, CompositionLocalProvider ব্যবহার করুন। ( Ic57f0 , b/444446629 )
• lifecycle-viewmodel-navigation3 তে KMP স্টাব যোগ করুন যাতে JetBrains এই লক্ষ্যগুলি পূরণ করে এমন ফর্ক সরবরাহ করতে পারে এবং এইভাবে CMP সমর্থন করে। ( I44a4c )

সংস্করণ 2.10.0-alpha03

২৭ আগস্ট, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-alpha03 প্রকাশিত হয়েছে। সংস্করণ 2.10.0-alpha03-এ এই কমিটগুলি রয়েছে।

API পরিবর্তনগুলি

• কম্পোজ 1.9.0 এ আপডেট করুন। ( I2b9de )

সংস্করণ 2.10.0-alpha02

১৩ আগস্ট, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-alpha02 প্রকাশিত হয়েছে। সংস্করণ 2.10.0-alpha02-এ এই কমিটগুলি রয়েছে।

নতুন বৈশিষ্ট্য

• LifecycleOwner composable এখন একটি স্বতন্ত্র রুট লাইফসাইকেল তৈরি করতে পারে। (স্পষ্টভাবে) parent = null সেট করে, নতুন লাইফসাইকেল যেকোনো হোস্ট (যেমন Activity , Fragment অথবা NavBackStackEntry ) থেকে স্বাধীনভাবে কাজ করে। কম্পোজেবল কম্পোজিশনে প্রবেশ করার সাথে সাথে এটি শুরু হয় এবং এটি বেরিয়ে যাওয়ার সাথে সাথে স্বয়ংক্রিয়ভাবে ধ্বংস হয়ে যায়। ( I8dfbe , b/433659048 )

  @Composable
  fun IndependentComponent() {
      // Create a standalone lifecycle, not tied to the parent Activity/Fragment.
      LifecycleOwner(parent = null) {
          val rootLifecycle = LocalLifecycleOwner.current.lifecycle
      }
  }
  

API পরিবর্তনগুলি

• LifecycleOwner কম্পোজেবলে, parentLifecycleOwner প্যারামিটারটির নাম পরিবর্তন করে parent রাখা হয়েছে। ( I080bc )

বাগ ফিক্স

• LifecycleOwner composable এখন সঠিকভাবে নিষ্পত্তির পরে তার জীবনচক্রকে DESTROYED তে স্থানান্তর করে। এটি জীবনচক্রের রেফারেন্স ধারণকারী বহিরাগত কোডের সম্ভাব্য লিক প্রতিরোধ করে। ( I9e5b7 , b/433659048 )
• ডিফল্ট minSdk কে API 21 থেকে API 23 এ স্থানান্তর করা হচ্ছে ( Ibdfca , b/380448311 , b/435705964 , b/435705223 )

বহিরাগত অবদান

• LifecycleOwner থেকে অপ্রয়োজনীয় অভ্যন্তরীণ ব্যাকিং ক্ষেত্রগুলি সরান। অবদানের জন্য জ্যাক ওয়ার্টনকে ধন্যবাদ। ( Ideddb )

সংস্করণ 2.10.0-alpha01

৩০ জুলাই, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-alpha01 প্রকাশিত হয়েছে। সংস্করণ 2.10.0-alpha01-এ এই কমিটগুলি রয়েছে।

নতুন বৈশিষ্ট্য

• UI এর মধ্যে সরাসরি স্কোপড লাইফসাইকেল তৈরি করতে একটি LifecycleOwner কম্পোজেবল যোগ করুন। এটি এমন উপাদানগুলির জন্য কার্যকর যাদের তাদের নিজস্ব লাইফসাইকেল স্বাধীনভাবে পরিচালনা করতে হয়। Navigation3 কীভাবে এই নতুন কম্পোজেবলকে একীভূত করে তার একটি উদাহরণের জন্য, aosp/3708610 দেখুন। ( 76cbf7 )

  @Composable
  fun MyComposable() {
      LifecycleOwner(
          maxLifecycle = RESUMED,
          parentLifecycleOwner = LocalLifecycleOwner.current,
      ) {
          val childLifecycleOwner = LocalLifecycleOwner.current
      }
  }
  

API পরিবর্তনগুলি

• CreationExtras এর জন্য একটি বিল্ডার ফ্যাক্টরি ফাংশন যোগ করুন, যা আরও সুবিধাজনক এবং ইডিওম্যাটিক Kotlin API প্রদান করবে। ( Iab2bd )
• SavedStateHandle.saved এ nullable প্রকারের জন্য নেটিভ সাপোর্ট যোগ করুন, nullable বৈশিষ্ট্য সংরক্ষণ এবং পুনরুদ্ধার সহজ করুন। ( I54d69 , b/421325690 )
• SavedStateHandle কনস্ট্রাক্টরগুলিকে @VisibleForTesting হিসেবে চিহ্নিত করুন। ( Iff0e0 , b/408002794 )

সংস্করণ 2.9

সংস্করণ 2.9.4

১৭ সেপ্টেম্বর, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.4 প্রকাশিত হয়েছে। সংস্করণ 2.9.4-এ এই কমিটগুলি রয়েছে।

বাগ ফিক্স

• কম্পোজ কম্পাইলার প্লাগইন প্রয়োগ না করার ফলে লাইফসাইকেল KMP আর্টিফ্যাক্টগুলি ভেঙে যাওয়ার একটি ত্রুটি ঠিক করা হয়েছে। ( Ie95bc , b/443096483 , b/443965665 )

সংস্করণ 2.9.3

২৭ আগস্ট, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.3 প্রকাশিত হয়েছে। সংস্করণ 2.9.3-এ এই কমিটগুলি রয়েছে।

নতুন বৈশিষ্ট্য

• লাইফসাইকেল *-compose আর্টিফ্যাক্টে নতুন কোটলিন মাল্টিপ্ল্যাটফর্ম (KMP) টার্গেট যোগ করুন। লাইফসাইকেল এখন মোট নিম্নলিখিত প্ল্যাটফর্মগুলিকে সমর্থন করে: JVM (Android এবং ডেস্কটপ), নেটিভ (Linux, iOS, watchOS, macOS, MinGW), এবং ওয়েব (JavaScript, WasmJS)। ( I0a0e4 )

বাগ ফিক্স

• androidx.annotation 1.9.1 তে আপডেট করুন ( Ic9e4f , b/397701294 )

সংস্করণ 2.9.2

১৬ জুলাই, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.2 প্রকাশিত হয়েছে। সংস্করণ 2.9.2-এ এই কমিটগুলি রয়েছে।

বাগ ফিক্স

• লাইফসাইকেল আর্টিফ্যাক্টগুলিতে নতুন কোটলিন মাল্টিপ্ল্যাটফর্ম (KMP) টার্গেট যোগ করা হয়েছে। লাইফসাইকেল এখন মোট নিম্নলিখিত প্ল্যাটফর্মগুলিকে সমর্থন করে: JVM (Android এবং ডেস্কটপ), নেটিভ (Linux, iOS, watchOS, macOS, MinGW), এবং ওয়েব (JavaScript, WasmJS)। মনে রাখবেন যে *-compose আর্টিফ্যাক্টগুলিতে কোনও নতুন KMP টার্গেট যোগ করা হয়নি, কারণ এটি Compose 1.9. ( I01cb8 ) এর স্থিতিশীল প্রকাশের উপর নির্ভর করে।

নির্ভরতা আপডেট

• নতুন KMP টার্গেটগুলির ( Ic9e4f , b/397701294 ) সমর্থন সক্ষম করার জন্য জীবনচক্র এখন অ্যানোটেশন 1.9.1 উপর নির্ভর করে।

সংস্করণ 2.9.1

৪ জুন, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.1 প্রকাশিত হয়েছে। সংস্করণ 2.9.1-এ এই কমিটগুলি রয়েছে।

বাগ ফিক্স

• SavedStateHandle.remove(key) SavedStateHandle.getMutableStateFlow(key) অবস্থা সাফ করছে না তা ঠিক করুন। ( d5f939 , b/418746333 )

সংস্করণ 2.9.0

৭ মে, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-এ এই কমিটগুলি রয়েছে।

২.৮.০ থেকে গুরুত্বপূর্ণ পরিবর্তনগুলি

• একটি নতুন androidx.lifecycle:lifecycle-viewmodel-testing KMP আর্টিফ্যাক্ট উপলব্ধ যা ViewModelScenario ক্লাস প্রদান করে যা আইসোলেশনে ViewModels পরীক্ষা করে, onCleared এবং SavedStateHandle এর জন্য সমর্থন সহ, সেইসাথে recreate() এর মাধ্যমে প্রক্রিয়া মৃত্যু এবং পুনর্গঠন পরীক্ষা করে।
• SavedStateHandle এ getMutableStateFlow যোগ করে একটি MutableStateFlow ফিরিয়ে আনুন। এই নতুন ফাংশনটি কী-এক্সক্লুসিভ এবং getLiveData এর সাথে ব্যবহার করা যাবে না। একই অবস্থা অ্যাক্সেস করার জন্য উভয় ব্যবহার করার চেষ্টা করলে একটি ব্যতিক্রম দেখা যাবে।
• CreationExtras এখন Kotlin-এ কন্টেন্টের ইডিওম্যাটিক ম্যানিপুলেশন সক্ষম করার জন্য মানচিত্রের মতো অপারেটর ওভারলোড অন্তর্ভুক্ত করে। এটি CreationExtras সাথে in , += , এবং + ব্যবহারের অনুমতি দেয়।

KotlinX সিরিয়ালাইজেশন সাপোর্ট

• SavedState 1.3.0 এ KotlinX Serialization এর সাপোর্ট যোগ করে, আমরা saved , একটি lazy property delegate চালু করেছি, যাতে SavedStateHandle এ @Serializable ক্লাসগুলি সংরক্ষণ করা সহজ হয় এবং প্রক্রিয়া মৃত্যু এবং পুনর্নির্মাণের সময় সেই ক্লাসগুলি স্বয়ংক্রিয়ভাবে পুনরুদ্ধার করা যায়। অনুগ্রহ করে মনে রাখবেন যে saved ডেলিগেটটি অলস এবং এটি অ্যাক্সেস না করা পর্যন্ত init lambda কল করবে না বা SavedStateHandle এ কিছু সংরক্ষণ করবে না।

  @Serializable
  data class Person(val firstName: String, val lastName: String)
  
  class MyViewModel(handle: SavedStateHandle) : ViewModel() {
      var person by handle.saved { Person("John", "Doe") }
  
      fun onPersonChanged(person: Person) {
          this.person = person
      }
  }
  

কোটলিন মাল্টিপ্ল্যাটফর্ম

• lifecycle-testing মডিউলটি এখন KMP সামঞ্জস্যপূর্ণ, যার মধ্যে TestLifecycleOwner এর মতো API গুলিও অন্তর্ভুক্ত।
• lifecycle-viewmodel-savedstate মডিউলটি এখন KMP-এর সাথে সামঞ্জস্যপূর্ণ, যার মধ্যে SavedStateHandle এর মতো API গুলিও অন্তর্ভুক্ত।
• androidx.compose.ui.platform.LocalLifecycleOwner এখন কমন সোর্স সেটে উপলব্ধ।
• NewInstanceFactory এখন JVM ডেস্কটপ এবং অ্যান্ড্রয়েড টার্গেটগুলিতে উপলব্ধ।

আচরণগত পরিবর্তন

• Lifecycle.DESTROYED অবস্থাটি শেষ পর্যায়ে, এবং এটি থেকে অন্য কোনও রাজ্যে একটি Lifecycle স্থানান্তরের যেকোনো প্রচেষ্টার ফলে এখন একটি IllegalStateException তৈরি হবে।
• SavedStateHandle আর এমন কোনও SavedStateProvider.saveState() অন্তর্ভুক্ত করে না যেখানে ফেরত পাঠানো Bundle খালি থাকে।

সংস্করণ 2.9.0-rc01

২৩ এপ্রিল, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-rc01 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-rc01-এ এই কমিটগুলি রয়েছে।

লিন্ট এপিআই সামঞ্জস্যতা সতর্কতা

• JetBrains KaCallableMemberCall একটি ক্লাস থেকে একটি ইন্টারফেসে পরিবর্তন করেছে, যা বাইনারি সামঞ্জস্যতা ভেঙে দেয়। যদি আপনার প্রকল্পের AGP সংস্করণটি লিন্ট চেক কম্পাইল করার জন্য ব্যবহৃত সংস্করণ থেকে আলাদা হয় তবে এটি ক্র্যাশ হতে পারে। এই আপডেটটি aosp/3577172 এ করা হয়েছিল কিন্তু রিলিজ নোট থেকে অনুপস্থিত ছিল — আমরা এখানে এটি স্পষ্ট করছি। প্রস্তাবিত সমাধান: সর্বশেষ স্থিতিশীল AGP-তে আপডেট করুন। যদি আপনি সম্পূর্ণরূপে আপডেট করতে না পারেন, তাহলে আপনার AGP সংস্করণের সাথে লিন্ট চেকগুলি সারিবদ্ধ করতে android.experimental.lint.version ব্যবহার করুন — বিস্তারিত জানার জন্য Compose Runtime আচরণ পরিবর্তনগুলি দেখুন।

সংস্করণ 2.9.0-beta01

৯ এপ্রিল, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-beta01 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-beta01-এ এই কমিটগুলি রয়েছে।

API পরিবর্তনগুলি

• Lifecycle ViewModel Compose এখন কম্পোজ রানটাইম ১.৭.১ এবং তার পরবর্তী সংস্করণের মতো একই কোটলিন মাল্টিপ্ল্যাটফর্ম সেটআপ ব্যবহার করে - -desktop আর্টিফ্যাক্টগুলি এখন সরানো হয়েছে এবং -jvmStubs এবং -linuxx64Stubs আর্টিফ্যাক্টগুলি যুক্ত করা হয়েছে। এই লক্ষ্যগুলির কোনওটিই ব্যবহারের জন্য নয়, এগুলি জেটব্রেইন কম্পোজ প্রচেষ্টায় সহায়তা করার জন্য স্থানধারক। ( I5cb14 , b/406592090 )

নির্ভরতা আপডেট

• এই লাইব্রেরিটি এখন Kotlin 2.0 ভাষা স্তরকে লক্ষ্য করে এবং KGP 2.0.0 বা তার পরবর্তী সংস্করণ প্রয়োজন। ( Idb6b5 )
• Lifecycle ViewModel Compose এখন কম্পোজ ১.৭.৮ এর উপর নির্ভরশীল। ( I5cb14 , b/406592090 )

সংস্করণ 2.9.0-alpha13

২৬ মার্চ, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-alpha13 কোনও উল্লেখযোগ্য পাবলিক পরিবর্তন ছাড়াই প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha13-এ এই কমিটগুলি রয়েছে।

সংস্করণ 2.9.0-alpha12

১২ মার্চ, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-alpha12 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha12-এ এই কমিটগুলি রয়েছে।

API পরিবর্তনগুলি

• সকল সমর্থিত KMP প্ল্যাটফর্মে ViewModelProvider.get এ @MainThread অ্যানোটেশন যোগ করুন। ( I7e8dd , b/397736115 )
• SavedState*Delegates নাম পরিবর্তন করে SavedState*Delegate করুন। ( I8589b , b/399629301 )

সংস্করণ 2.9.0-alpha11

২৬ ফেব্রুয়ারী, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-alpha11 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha11-এ এই কমিটগুলি রয়েছে।

API পরিবর্তনগুলি

• saved() ডেলিগেটগুলিতে SavedStateConfig প্যারামিটার যোগ করুন ( I39b3a )

সংস্করণ 2.9.0-alpha10

১২ ফেব্রুয়ারী, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-alpha10 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha10-এ এই কমিটগুলি রয়েছে।

API পরিবর্তনগুলি

• MutableStateSerializer lifecycle-viewmodel-compose থেকে savedstate-compose এ সরান। ( I4f690 , b/378895074 )

বহিরাগত অবদান

• কম্পোজিশনে Lifecycle::currentState কল করার জন্য একটি নতুন Lint সমস্যা যোগ করা হয়েছে, পরিবর্তে currentStateAsalue().value ব্যবহার করার পরামর্শ দেওয়া হচ্ছে যাতে Lifecycle অবস্থায় পরিবর্তনগুলি সঠিকভাবে পুনর্গঠন ঘটায়। ধন্যবাদ Steven Schoen! ( Iad484 )

সংস্করণ 2.9.0-alpha09

২৯ জানুয়ারী, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-alpha09 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha09-এ এই কমিটগুলি রয়েছে।

নতুন বৈশিষ্ট্য

• androidx.compose.runtime.MutableState সিরিয়ালাইজ করার জন্য MutableStateSerializer যোগ করুন। ( Idfc48 , b/378895074 )

API পরিবর্তনগুলি

• ওভারলোডেড SavedStateHandle.saved() ডেলিগেট ফাংশনগুলিকে ডিফল্ট প্যারামিটার দিয়ে প্রতিস্থাপন করুন ( Icd1c1 )
• AbstractSavedStateViewModelFactory বন্ধ করা হয়েছে কারণ এটি প্রতিটি ViewModel এর জন্য একটি SavedStateHandle তৈরি করে, যার ফলে অপ্রয়োজনীয় ওভারহেড হয়। আরও দক্ষ ViewModel তৈরির জন্য CreationExtras.createSavedStateHandle এর সাথে ViewModelProvider.Factory ব্যবহার করুন। ( Ia920b , b/388590327 )

সংস্করণ 2.9.0-alpha08

১১ ডিসেম্বর, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha08 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha08-এ এই কমিটগুলি রয়েছে।

নতুন বৈশিষ্ট্য

• ViewModelScenario.recreate যোগ করুন যাতে একটি সিস্টেম প্রসেস ডেথ সিমুলেট করা যায় যা পরীক্ষার অধীনে ViewModel এবং সমস্ত সংশ্লিষ্ট উপাদানগুলিকে পুনরায় তৈরি করে। ( Id6a69 , b/381063087 )
• LifecycleOwner এবং ViewModelStoreOwner দৃষ্টান্তগুলি তাদের নিজ নিজ findViewTree API-এর মাধ্যমে পুনরুদ্ধার করা হয়েছে, এখন ViewOverlay এর মতো কোনও ভিউয়ের ডিসজয়েন্ট প্যারেন্টের মাধ্যমে সমাধান করা যেতে পারে। ডিসজয়েন্ট ভিউ প্যারেন্ট সম্পর্কে আরও তথ্যের জন্য core-এর রিলিজ নোট বা ViewTree.setViewTreeDisjointParent এর ডকুমেন্টেশন দেখুন। ( I800f4 )

API পরিবর্তনগুলি

• SavedStateRegistryOwnerDelegate ( I8c135 , b/376026744 ) এর সাথে নামকরণ এবং প্যাকেজ সংগঠনকে আরও সামঞ্জস্যপূর্ণ করুন।

বাগ ফিক্স

• এই লাইব্রেরিটি এখন JSpecify nullness annotations ব্যবহার করে, যা টাইপ-ব্যবহারের। সঠিক ব্যবহার জোরদার করার জন্য Kotlin ডেভেলপারদের নিম্নলিখিত কম্পাইলার আর্গুমেন্ট ব্যবহার করা উচিত: -Xjspecify-annotations=strict (এটি Kotlin কম্পাইলারের 2.1.0 সংস্করণ থেকে শুরু করে ডিফল্ট)। ( Ie4340 , b/326456246 )
• ডকুমেন্ট ViewModel.onCleared ক্লিয়ারিং সিকোয়েন্স। ( I586c7 , b/363984116 )

সংস্করণ 2.9.0-alpha07

১৩ নভেম্বর, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha07 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha07-এ এই কমিটগুলি রয়েছে।

কোটলিন মাল্টিপ্ল্যাটফর্ম সামঞ্জস্যতা

• Lifecycle ViewModel SavedState এখন KMP-এর সাথে সামঞ্জস্যপূর্ণ। এটি আপনাকে সাধারণ কোডে SavedStateHandle ব্যবহার করতে দেয়। ( Ib6394 , b/334076622 )

KotlinX সিরিয়ালাইজেশন সাপোর্ট

• SavedState 1.3.0-alpha05 এ KotlinX Serialization এর সাপোর্ট যোগ করে, আমরা saved , একটি lazy property delegate চালু করেছি, যাতে SavedStateHandle এ @Serializable ক্লাসগুলি সংরক্ষণ করা সহজ হয় এবং প্রক্রিয়া মৃত্যু এবং পুনর্নির্মাণের সময় সেই ক্লাসগুলি স্বয়ংক্রিয়ভাবে পুনরুদ্ধার করা যায়। অনুগ্রহ করে মনে রাখবেন যে saved ডেলিগেটটি অলস এবং এটি অ্যাক্সেস না করা পর্যন্ত init lambda কল করবে না বা SavedStateHandle এ কিছু সংরক্ষণ করবে না। ( I47a88 , b/376026744 )

  @Serializable
  data class Person(val firstName: String, val lastName: String)
  
  class MyViewModel(handle: SavedStateHandle) : ViewModel() {
      var person by handle.saved { Person("John", "Doe") }
  
      fun onPersonChanged(person: Person) {
          this.person = person
      }
  }
  

API পরিবর্তনগুলি

• SavedStateHandle এ getMutableStateFlow যোগ করে একটি MutableStateFlow ফিরিয়ে আনুন। এই নতুন ফাংশনটি কী-এক্সক্লুসিভ এবং getLiveData এর সাথে ব্যবহার করা যাবে না। একই অবস্থায় অ্যাক্সেস করার জন্য উভয় ব্যবহার করার চেষ্টা করলে একটি ব্যতিক্রম দেখা যাবে। ( I04a4f , b/375408415 )

সংস্করণ 2.9.0-alpha06

৩০ অক্টোবর, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha06 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha06-এ এই কমিটগুলি রয়েছে।

আচরণগত পরিবর্তন

• Lifecycle.DESTROYED অবস্থাটি শেষ পর্যায়ে, এবং এটি থেকে অন্য কোনও রাজ্যে একটি Lifecycle স্থানান্তরের যেকোনো প্রচেষ্টার ফলে এখন একটি IllegalStateException তৈরি হবে। ( I116c4 , b/370577987 )
• SavedStateHandle আর কোনও SavedStateProvider.saveState() অন্তর্ভুক্ত নেই যেখানে ফেরত দেওয়া Bundle খালি থাকে। ( I910b5 , b/370577987 )

বাগ ফিক্স

• Lifecycle.eventFlow এখন সঠিকভাবে সম্পূর্ণ হয়েছে যখন Lifecycle DESTROYED ( I293b2 , b/374043130 )

সংস্করণ 2.9.0-alpha05

১৬ অক্টোবর, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha05 কোনও উল্লেখযোগ্য পরিবর্তন ছাড়াই প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha05-এ এই কমিটগুলি রয়েছে।

সংস্করণ 2.9.0-alpha04

২ অক্টোবর, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha04 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha04-এ এই কমিটগুলি রয়েছে।

কোটলিন মাল্টিপ্ল্যাটফর্ম

• lifecycle-viewmodel-savedstate মডিউলটি এখন KMP সামঞ্জস্যপূর্ণ হওয়ার জন্য কনফিগার করা হয়েছে, যাতে ভবিষ্যতের রিলিজে SavedStateHandle মতো API গুলি সাধারণ উৎস সেটে উপলব্ধ করা হবে। ( I503ed , I48764 , b/334076622 )

সংস্করণ 2.9.0-alpha03

১৮ সেপ্টেম্বর, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha03 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha03-এ এই কমিটগুলি রয়েছে।

বাগ ফিক্স

• লাইফসাইকেল 2.8.6 থেকে: NullSafeMutableLiveData Lint ত্রুটিটি স্মার্ট কাস্টের জন্য সমর্থন উন্নত করেছে, মিথ্যা ইতিবাচকতা এড়িয়ে চলেছে। ( 85fed6 , b/181042665 )

নির্ভরতা আপডেট

• লাইফসাইকেল 2.8.6 থেকে: লাইফসাইকেল রানটাইম কম্পোজ এখন কম্পোজ রানটাইম 1.7.1 উপর নির্ভরশীল।
• লাইফসাইকেল রানটাইম এখন প্রোফাইল ইনস্টলার 1.4.0 এর উপর নির্ভর করে

সংস্করণ 2.9.0-alpha02

৪ সেপ্টেম্বর, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha02 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha02-এ এই কমিটগুলি রয়েছে।

বাগ ফিক্স

• লাইফসাইকেল 2.8.5 থেকে: অস্পষ্টতা দূর করতে androidx.lifecycle.ReportFragment ProGuard নিয়ম আপডেট করুন। ( ff898e1 )

বহিরাগত অবদান

• androidx.compose.ui.platform.LocalLifecycleOwner কমন সোর্স সেট (KMP) এ সরান। অবদানের জন্য JetBrains থেকে ইভান ম্যাটকভকে ধন্যবাদ। ( 8cd5d03 )
• লাইফসাইকেল 2.8.5 থেকে: SavedStateHandle.saveable` এক্সটেনশন ডেলিগেট এখন nullable মান সমর্থন করে। অবদানের জন্য ধন্যবাদ Roman Kalukiewicz। ( 0d78ea6 )

সংস্করণ 2.9.0-alpha01

৭ আগস্ট, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha01 প্রকাশিত হয়েছে। সংস্করণ 2.9.0-alpha01-এ এই কমিটগুলি রয়েছে।

কোটলিন মাল্টিপ্ল্যাটফর্ম

• lifecycle-testing এখন KMP সামঞ্জস্যপূর্ণ। ( Iea41e )
• linuxArm64 kotlin মাল্টিপ্ল্যাটফর্ম টার্গেটের জন্য সমর্থন যোগ করুন ( I139d3 , b/338268719 )

নতুন বৈশিষ্ট্য

• একটি নতুন androidx.lifecycle:lifecycle-viewmodel-testing KMP আর্টিফ্যাক্ট উপলব্ধ যা ViewModelScenario ক্লাস প্রদান করে যা ViewModels কে আলাদাভাবে পরীক্ষা করে, যা onCleared (সমস্ত প্ল্যাটফর্ম) এবং SavedStateHandle (শুধুমাত্র Android) এর জন্য সমর্থন করে। ( 337f68d , c9b3409 , 9799a95c , b/264602919 )
• ViewModelProvider দিয়ে ViewModel তৈরি করা এখন থ্রেড সেফ; @MainThread অ্যানোটেশনগুলি সরানো হয়েছে। ( Ifd978 , b/237006831 )

API পরিবর্তনগুলি

• বেনামী CreationExtras.Key অবজেক্ট তৈরি সহজ করতে CreationExtras.Key() ফ্যাক্টরি ফাংশন যোগ করুন। ( I970ee )
• CreationExtras এখন Kotlin-এ কন্টেন্টের ইডিওম্যাটিক ম্যানিপুলেশন সক্ষম করার জন্য মানচিত্রের মতো অপারেটর ওভারলোড অন্তর্ভুক্ত করে। এটি CreationExtras এর সাথে in , += , এবং + ব্যবহারের অনুমতি দেয়। ( Ib4353 )
• CreationExtras এখন equals , hashCode , এবং toString পদ্ধতি প্রয়োগ করে। ( Ib4353 )
• NewInstanceFactory এখন JVM ডেস্কটপ এবং অ্যান্ড্রয়েড টার্গেটগুলিতে উপলব্ধ। ( d3d0892 )
• কোটলিন ভাষা সংস্করণ 2.0 ( I39df2 ) তে অন্তর্নিহিত অ্যাপ্লিকেশনটি নিরাপদে প্রকাশ করার জন্য ইনলাইন এক্সটেনশন সম্পত্তি

বাগ ফিক্স

• নতুন প্ল্যাটফর্ম API-তে অ্যাক্সেসের ম্যানুয়াল রূপরেখা সরানো হয়েছে কারণ এটি AGP 7.3 বা তার পরবর্তী সংস্করণ (যেমন R8 সংস্করণ 3.3) ব্যবহার করার সময় এবং AGP 8.1 বা তার পরবর্তী সংস্করণ (যেমন D8 সংস্করণ 8.1) ব্যবহার করার সময় সমস্ত বিল্ডের জন্য API মডেলিংয়ের মাধ্যমে স্বয়ংক্রিয়ভাবে ঘটে। যে ক্লায়েন্টরা AGP ব্যবহার করছেন না তাদের D8 সংস্করণ 8.1 বা তার পরবর্তী সংস্করণে আপডেট করার পরামর্শ দেওয়া হচ্ছে। আরও বিস্তারিত জানার জন্য এই নিবন্ধটি দেখুন। ( If6b4c , b/345472586 )

সংস্করণ 2.8

সংস্করণ 2.8.7

৩০ অক্টোবর, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.7 প্রকাশিত হয়েছে। সংস্করণ 2.8.7-এ এই কমিটগুলি রয়েছে।

API পরিবর্তনগুলি

• androidx.compose.ui.platform.LocalLifecycleOwner এখন কমন সোর্স সেট (KMP) তে উপলব্ধ। ( 6a3f5b3 )
• lifecycle-runtime-compose : desktop আর্টিফ্যাক্টগুলি সরানো হয়েছে এবং -jvmStubs এবং -linuxx64Stubs আর্টিফ্যাক্টগুলি যোগ করা হয়েছে। এই টার্গেটগুলির কোনওটিই ব্যবহারের জন্য নয়, এগুলি Jetbrains Compose প্রচেষ্টায় সহায়তা করার জন্য স্থানধারক। ( 6a3f5b3 )

সংস্করণ 2.8.6

১৮ সেপ্টেম্বর, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.6 প্রকাশিত হয়েছে। সংস্করণ 2.8.6-এ এই কমিটগুলি রয়েছে।

বাগ ফিক্স

• NullSafeMutableLiveData Lint ত্রুটিটি স্মার্ট কাস্টের জন্য সমর্থন উন্নত করেছে, মিথ্যা ইতিবাচকতা এড়িয়ে চলেছে। ( 85fed6 , b/181042665 )

নির্ভরতা আপডেট

• লাইফসাইকেল রানটাইম কম্পোজ এখন কম্পোজ রানটাইম 1.7.1 এর উপর নির্ভর করে

সংস্করণ 2.8.5

৪ সেপ্টেম্বর, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.5 প্রকাশিত হয়েছে। সংস্করণ 2.8.5-এ এই কমিটগুলি রয়েছে।

বাগ ফিক্স

• অস্পষ্টতা দূর করতে androidx.lifecycle.ReportFragment ProGuard নিয়ম আপডেট করুন। ( ff898e1 )

বহিরাগত অবদান

• SavedStateHandle.saveable এক্সটেনশন ডেলিগেট এখন nullable মান সমর্থন করে। অবদানের জন্য ধন্যবাদ Roman Kalukiewicz। ( 0d78ea6 )

সংস্করণ 2.8.4

২৪ জুলাই, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.4 প্রকাশিত হয়েছে। সংস্করণ 2.8.4-এ এই কমিটগুলি রয়েছে।

বাগ ফিক্স

• LiveData.asFlow() এখন সঠিকভাবে সেইসব ক্ষেত্রে পরিচালনা করে যেখানে LiveData তে ইতিমধ্যেই সেট করা একটি মান পাওয়ার পরে (উদাহরণস্বরূপ, take(1) ব্যবহার করার সময়) ফেরত পাঠানো ফ্লো অবিলম্বে সম্পন্ন হয়। ( I9c566 )
• Lifecycle*Effect সমাপ্তি এখন অক্ষম (অর্থাৎ, যদি জীবনচক্র বন্ধ থাকার কারণে onStopOrDispose কল করা হয়, তাহলে নিষ্পত্তির পরে এটি দ্বিতীয়বার কল করা হবে না যদি না জীবনচক্র আবার STARTED এ ফিরে আসে)। ( I5f607 , b/352364595 )

সংস্করণ 2.8.3

১ জুলাই, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.3 প্রকাশিত হয়েছে। সংস্করণ 2.8.3-এ এই কমিটগুলি রয়েছে।

বাগ ফিক্স

• কোড সঙ্কুচিত করার সময় লাইফসাইকেল 2.8 এর কম্পোজ 1.6.0 এবং তার নিচের সংস্করণের সাথে ব্যাকওয়ার্ড সামঞ্জস্যের সমস্যা সমাধান করা হয়েছে। ( aosp/3133056 , b/346808608 )

সংস্করণ 2.8.2

১২ জুন, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.2 প্রকাশিত হয়েছে। সংস্করণ 2.8.2-এ এই কমিটগুলি রয়েছে।

বাগ ফিক্স

• কম্পোজ ১.৬.এক্স বা তার আগের ভার্সনের সাথে লাইফসাইকেল ২.৮.এক্স ব্যবহার করার সময় CompositionLocal LocalLifecycleOwner not present - এখন আপনি কোনও সমাধান ছাড়াই কম্পোজিশনের যেকোনো ভার্সনের সাথে লাইফসাইকেল ২.৮.২ ব্যবহার করতে পারবেন। ( aosp/3105647 , b/336842920 )
• ViewModelProvider আর compileOnly Lifecycle নির্ভরতার পূর্ববর্তী সংস্করণগুলিকে 2.8+ সংস্করণের সাথে মিশ্রিত করার সময় ক্র্যাশ করবে না, LeakCanary এর মতো লাইব্রেরির সমস্যাগুলি সমাধান করবে। ( I80383 , b/341792251 )

সংস্করণ 2.8.1

২৯ মে, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.1 প্রকাশিত হয়েছে। সংস্করণ 2.8.1-এ এই কমিটগুলি রয়েছে।

বাগ ফিক্স

• lifecycle-viewmodel-compose এখন শুধুমাত্র compose-runtime এর উপর একটি সাধারণ নির্ভরতা রয়েছে, compose-ui উপর এর সাধারণ নির্ভরতা সরিয়ে দিয়েছে। Android আর্টিফ্যাক্টটি সামঞ্জস্যের জন্য তার compose-ui ধরে রেখেছে। ( aosp/3079334 , b/339562627 )
• ViewModel এর saveable ইন্টিগ্রেশন ব্যবহার করে প্রপার্টি ডেলিগেটস এখন স্বয়ংক্রিয়ভাবে তৈরি কী-এর অংশ হিসেবে ক্লাসের নাম ব্যবহার করে, একাধিক ক্লাস একই SavedStateHandle ব্যবহার করলে দ্বন্দ্ব এড়ানো যায়। ( aosp/3063463 )

সংস্করণ 2.8.0

১৪ মে, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.0 প্রকাশিত হয়েছে। সংস্করণ 2.8.0-এ এই কমিটগুলি রয়েছে।

২.৭.০ থেকে গুরুত্বপূর্ণ পরিবর্তনগুলি

• LocalLifecycleOwner Compose UI থেকে lifecycle-runtime-compose এ স্থানান্তরিত করা হয়েছে যাতে এর Compose-ভিত্তিক সহায়ক API গুলি Compose UI এর বাইরে ব্যবহার করা যায়।
• lifecycle-runtime-compose আর্টিফ্যাক্টে এখন dropUnlessResumed এবং dropUnlessStarted API রয়েছে যা আপনাকে ক্লিক বা অন্যান্য ইভেন্ট ড্রপ করতে দেয় যা LifecycleOwner প্রদত্ত Lifecycle.State নিচে নেমে যাওয়ার পরেও ঘটে। উদাহরণস্বরূপ, অন্য স্ক্রিনে রূপান্তর শুরু হওয়ার পরে ক্লিক ইভেন্টগুলি পরিচালনা করা এড়াতে এটি নেভিগেশন কম্পোজের সাথে ব্যবহার করা যেতে পারে: onClick: () -> Unit = dropUnlessResumed { navController.navigate(NEW_SCREEN) }

• ViewModel.viewModelScope এখন একটি ওভাররাইডেবল কনস্ট্রাক্টর প্যারামিটার, যা আপনাকে আপনার নিজস্ব ডিসপ্যাচার এবং SupervisorJob() ইনজেক্ট করতে দেয় অথবা runTest মধ্যে উপলব্ধ backgroundScope ব্যবহার করে ডিফল্ট ওভাররাইড করতে দেয়। ( I2817c , b/264598574 )

  class MyViewModel(
    // Make Dispatchers.Main the default, rather than Dispatchers.Main.immediate
    viewModelScope: CoroutineScope = Dispatchers.Main + SupervisorJob()
  ) : ViewModel(viewModelScope) {
    // Use viewModelScope as before, without any code changes
  }
  
  // Allows overriding the viewModelScope in a test
  fun Test() = runTest {
    val viewModel = MyViewModel(backgroundScope)
  }
  

• ViewModel Kotlin এ পুনর্লিখন করা হয়েছে এবং এখন Closeable এর পরিবর্তে AutoClosable ব্যবহার করে। এটি এখন AutoCloseable অবজেক্ট যোগ করার জন্য একটি key ব্যবহার করে যা getCloseable() মাধ্যমে সেগুলি পুনরুদ্ধার করতে দেয়।

• এখন কী ছাড়া LifecycleStartEffect এবং LifecycleResumeEffect কল করা একটি ত্রুটি, কারণ এই API গুলি DisposableEffect API এর মতো একই নিয়ম অনুসরণ করে।

• LiveDataReactiveStreams.toPublisher(lifecycleOwner, liveData) LiveData.toPublisher(lifecycleOwner) এর পরিবর্তে অপ্রচলিত করা হয়েছে।

• lifecycle-livedata-core-ktx kotlin এক্সটেনশনগুলি এখন lifecycle-livedata-core মডিউলে স্থানান্তরিত করা হয়েছে।

• অনেক মিথ্যা ইতিবাচক তথ্য এড়াতে NullSafeMutableLiveData পুনঃফ্যাক্টর করা হয়েছে।

লাইফসাইকেল কোটলিন মাল্টিপ্ল্যাটফর্ম সামঞ্জস্যতা

Lifecycle , LifecycleOwner , LifecycleObserver , Lifecycle.State , Lifecycle.Event , এবং LifecycleRegistry এর মূল Lifecycle API গুলি এখন Kotlin Multiplatform-এর সাথে সামঞ্জস্যপূর্ণ আর্টিফ্যাক্টে পাঠানো হয়।

প্রভাবিত শিল্পকর্ম:

• lifecycle-common বেশিরভাগ API গুলিকে common এ স্থানান্তর করে এবং Android ছাড়াও jvm এবং iOS সমর্থন করে।
• lifecycle-runtime বেশিরভাগ API গুলিকে common এ স্থানান্তর করে এবং অ্যান্ড্রয়েড ছাড়াও jvm এবং iOS সমর্থন করে।
• lifecycle-runtime-ktx এখন খালি, সমস্ত API গুলি lifecycle-runtime এ স্থানান্তরিত হচ্ছে।
• lifecycle-runtime-compose সমস্ত API গুলিকে common এ স্থানান্তর করে এবং androidx.compose এর মাল্টিপ্ল্যাটফর্ম সাপোর্টের সাথে মিলে একটি Android আর্টিফ্যাক্ট সরবরাহ করে।

ভিউমডেল কোটলিন মাল্টিপ্ল্যাটফর্ম সামঞ্জস্যতা

lifecycle-viewmodel আর্টিফ্যাক্ট এবং ViewModel , ViewModelStore , ViewModelStoreOwner , এবং ViewModelProvider এর মতো API গুলি এখন Kotlin Multiplatform এর সাথে সামঞ্জস্যপূর্ণ আর্টিফ্যাক্টে পাঠানো হয়।

এই পরিবর্তনটি সামঞ্জস্য করার জন্য, ViewModelProvider এর মতো পদ্ধতিগুলি যেগুলি java.lang.Class<T> নিয়েছে এখন একটি সমতুল্য পদ্ধতি রয়েছে যা kotlin.reflect.KClass<T> নেয়।

অ্যান্ড্রয়েডে বাইনারি সামঞ্জস্যতা বজায় রাখা হয়েছে, তবে সাধারণ API পৃষ্ঠের সাথে অ্যান্ড্রয়েড API পৃষ্ঠের তুলনা করার সময় কয়েকটি উল্লেখযোগ্য পরিবর্তন দেখা যায়:

• একটি ViewModelProvider ইনস্ট্যান্স তৈরি করা এখন সরাসরি কনস্ট্রাক্টরকে কল করার পরিবর্তে ViewModelProvider.create() পদ্ধতির মাধ্যমে করা হয়।
• ViewModelProvider.NewInstanceFactory এবং ViewModelProvider.AndroidViewModelFactory শুধুমাত্র Android এ উপলব্ধ।
  • কাস্টম ফ্যাক্টরিগুলিকে ViewModelProvider.Factory থেকে প্রসারিত করার এবং create পদ্ধতি ব্যবহার করার পরামর্শ দেওয়া হচ্ছে যা CreationExtras নেয় অথবা viewModelFactory Kotlin DSL ব্যবহার করে।
• JVM-বহির্ভূত প্ল্যাটফর্মগুলিতে কাস্টম ফ্যাক্টরি ছাড়া ViewModelProvider ব্যবহার করলে UnsupportedOperationException তৈরি হবে। JVM প্ল্যাটফর্মগুলিতে, যদি কাস্টম ফ্যাক্টরি প্রদান না করা হয় তবে no-args ViewModel কনস্ট্রাক্টর ব্যবহার করে সামঞ্জস্যতা সংরক্ষণ করা হয়।
• viewModelScope এমন প্ল্যাটফর্মগুলিতে EmptyCoroutineContext এ ফিরে যাবে যেখানে Dispatchers.Main উপলব্ধ নেই (যেমন, Linux)।

প্রভাবিত শিল্পকর্ম:

• lifecycle-viewmodel বেশিরভাগ API গুলিকে common এ স্থানান্তর করে এবং Android ছাড়াও jvm এবং iOS সমর্থন করে।
• lifecycle-viewmodel-ktx এখন খালি, সমস্ত API গুলি lifecycle-viewmodel এ স্থানান্তরিত হচ্ছে।
• lifecycle-viewmodel-compose সমস্ত API গুলিকে common এ স্থানান্তর করে এবং androidx.compose এর মাল্টিপ্ল্যাটফর্ম সাপোর্টের সাথে মিলে একটি Android আর্টিফ্যাক্ট সরবরাহ করে।

আচরণগত পরিবর্তন

• যদি একই clazz: KClass<VM : ViewModel> সহ একটি initializer ইতিমধ্যেই যোগ করা হয়ে থাকে, তাহলে InitializerViewModelFactory ( viewModelFactory বিল্ডার ফাংশন সহ) এখন একটি IllegalArgumentException নিক্ষেপ করবে। ( Ic3a36 )

জ্ঞাত সমস্যা

• lifecycle-*:2.8.0 এর জন্য ন্যূনতম 1.7.0-alpha05 ( b/336842920 ) কম্পোজ সংস্করণ প্রয়োজন।

সংস্করণ 2.8.0-rc01

১ মে, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.0-rc01 প্রকাশিত হয়েছে। সংস্করণ 2.8.0-rc01-এ এই কমিটগুলি রয়েছে।

বাগ ফিক্স

• lifecycle-common ক্লাসের জন্য বেসলাইন প্রোফাইল সঠিকভাবে প্যাকেজ না করার সমস্যাটি সমাধান করা হয়েছে। এগুলি এখন lifecycle-runtime AAR-তে প্যাকেজ করা হয়েছে। ( aosp/3038274 , b/322382422 )
• ViewModel-এর সাথে সংযুক্ত AutoCloseable ইনস্ট্যান্সগুলি কীভাবে সাফ করা হয় তার অনিচ্ছাকৃত ক্রম পরিবর্তন সংশোধন করা হয়েছে - addCloseable(String, AutoCloseable) , তারপর addClosable(AutoCloseable) , তারপর onCleared() এর পূর্ববর্তী ক্রম পুনরুদ্ধার করা হয়েছে। ( aosp/3041632 )
• নেটিভ এবং JVM ডেস্কটপ পরিবেশের জন্য viewModelScope এর ডিফল্ট তৈরির আচরণ উন্নত করুন। ( aosp/3039221 )

বহিরাগত অবদান

• JVM ডেস্কটপে মূল থ্রেডের চেকিং উন্নত করার জন্য ভিক্টর ক্রপকে ধন্যবাদ। ( aosp/3037116 )

সংস্করণ 2.8.0-beta01

১৭ এপ্রিল, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.0-beta01 প্রকাশিত হয়েছে। সংস্করণ 2.8.0-beta01-এ এই কমিটগুলি রয়েছে।

নতুন বৈশিষ্ট্য

• lifecycle-runtime-compose আর্টিফ্যাক্টটি এখন কোটলিন মাল্টিপ্ল্যাটফর্মের সাথে সামঞ্জস্যপূর্ণ, এর কোডটি common -এ স্থানান্তরিত করে এবং একটি অ্যান্ড্রয়েড আর্টিফ্যাক্ট সরবরাহ করে, যা androidx.compose এর জন্য মাল্টিপ্ল্যাটফর্ম সাপোর্টের সাথে মিলে যায়। ( If7a71 , I4f4a0 , b/331769623 )

সংস্করণ 2.8.0-alpha04

৩ এপ্রিল, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.0-alpha04 প্রকাশিত হয়েছে। সংস্করণ 2.8.0-alpha04-এ এই কমিটগুলি রয়েছে।

নতুন বৈশিষ্ট্য

• lifecycle-viewmodel-compose আর্টিফ্যাক্টটি এখন Kotlin Multiplatform এর সাথে সামঞ্জস্যপূর্ণ, এর কোডটি common এ স্থানান্তরিত করে এবং androidx.compose এর মাল্টিপ্ল্যাটফর্ম সাপোর্টের সাথে মিলে একটি Android আর্টিফ্যাক্ট সরবরাহ করে। এই পরিবর্তনটি সামঞ্জস্য করার জন্য, Composable viewModel পদ্ধতিটি এখন java.lang.Class এর পাশাপাশি একটি KClass গ্রহণ করে। ( b/330323282 )

বাগ ফিক্স

• অনেক মিথ্যা পজিটিভ এড়াতে NullSafeMutableLiveData পুনঃফ্যাক্টর করা হয়েছে। ( I2d8c1 , Iafb18 , I03463 , I7ecef )

নির্ভরতা আপডেট

• lifecycle-viewmodel-compose আর্টিফ্যাক্ট এখন কম্পোজ ১.৬.০ এর উপর নির্ভর করে।
• জীবনচক্র এখন প্রোফাইল ইনস্টলার 1.3.1 এর উপর নির্ভর করে।

সংস্করণ 2.8.0-alpha03

২০ মার্চ, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.0-alpha03 প্রকাশিত হয়েছে। সংস্করণ 2.8.0-alpha03-এ এই কমিটগুলি রয়েছে।

নতুন বৈশিষ্ট্য

• ViewModel.viewModelScope এখন একটি ওভাররাইডেবল কনস্ট্রাক্টর প্যারামিটার, যা আপনাকে আপনার নিজস্ব ডিসপ্যাচার এবং SupervisorJob() ইনজেক্ট করতে দেয় অথবা runTest মধ্যে উপলব্ধ backgroundScope ব্যবহার করে ডিফল্ট ওভাররাইড করতে দেয়। ( I2817c , b/264598574 )

  class MyViewModel(
    // Make Dispatchers.Main the default, rather than Dispatchers.Main.immediate
    viewModelScope: CoroutineScope = Dispatchers.Main + SupervisorJob()
  ) : ViewModel(viewModelScope) {
    // Use viewModelScope as before, without any code changes
  }
  
  // Allows overriding the viewModelScope in a test
  fun Test() = runTest {
    val viewModel = MyViewModel(backgroundScope)
  }
  

কোটলিন মাল্টিপ্ল্যাটফর্ম সামঞ্জস্যতা

lifecycle-viewmodel আর্টিফ্যাক্ট এবং ViewModel , ViewModelStore , ViewModelStoreOwner , এবং ViewModelProvider এর মতো API গুলি এখন Kotlin Multiplatform এর সাথে সামঞ্জস্যপূর্ণ আর্টিফ্যাক্টে পাঠানো হচ্ছে। ( b/214568825 )

এই পরিবর্তনটি সামঞ্জস্য করার জন্য, ViewModelProvider এর মতো পদ্ধতিগুলি যেগুলি java.lang.Class<T> নিয়েছে এখন একটি সমতুল্য পদ্ধতি রয়েছে যা kotlin.reflect.KClass<T> নেয়।

অ্যান্ড্রয়েডে বাইনারি সামঞ্জস্যতা বজায় রাখা হয়েছে, তবে সাধারণ API পৃষ্ঠের সাথে অ্যান্ড্রয়েড API পৃষ্ঠের তুলনা করার সময় কয়েকটি উল্লেখযোগ্য পরিবর্তন দেখা যায়:

• একটি ViewModelProvider ইনস্ট্যান্স তৈরি করা এখন সরাসরি কনস্ট্রাক্টরকে কল করার পরিবর্তে ViewModelProvider.create() পদ্ধতির মাধ্যমে করা হয়।
• ViewModelProvider.NewInstanceFactory এবং ViewModelProvider.AndroidViewModelFactory শুধুমাত্র Android এ উপলব্ধ।
  • কাস্টম ফ্যাক্টরিগুলিকে ViewModelProvider.Factory থেকে প্রসারিত করার এবং create পদ্ধতি ব্যবহার করার পরামর্শ দেওয়া হচ্ছে যা CreationExtras নেয় অথবা viewModelFactory Kotlin DSL ব্যবহার করে।
• JVM-বহির্ভূত প্ল্যাটফর্মগুলিতে কাস্টম ফ্যাক্টরি ছাড়া ViewModelProvider ব্যবহার করলে UnsupportedOperationException তৈরি হবে। JVM প্ল্যাটফর্মগুলিতে, যদি কাস্টম ফ্যাক্টরি প্রদান না করা হয় তবে no-args ViewModel কনস্ট্রাক্টর ব্যবহার করে সামঞ্জস্যতা সংরক্ষণ করা হয়।
• viewModelScope এমন প্ল্যাটফর্মগুলিতে EmptyCoroutineContext এ ফিরে যাবে যেখানে Dispatchers.Main উপলব্ধ নেই (যেমন, Linux)।

আচরণগত পরিবর্তন

• যদি একই clazz: KClass<VM : ViewModel> সহ একটি initializer ইতিমধ্যেই যোগ করা হয়ে থাকে, তাহলে InitializerViewModelFactory ( viewModelFactory বিল্ডার ফাংশন সহ) এখন একটি IllegalArgumentException নিক্ষেপ করবে। ( Ic3a36 )

বাগ ফিক্স

• ViewModel.getCloseable এখন ডুপ্লিকেট করা কীগুলি পরিচালনা করে: যদি key ইতিমধ্যেই একটি AutoCloseable রিসোর্স যুক্ত থাকে, তাহলে পুরানো রিসোর্সটি প্রতিস্থাপন করা হবে এবং অবিলম্বে বন্ধ করে দেওয়া হবে। ( Ibeb67 )
• ViewModel এর viewModelScope অ্যাক্সেস করা এখন থ্রেড নিরাপদ। ( If4766 , b/322407038 )

বহিরাগত অবদান

• LocalLifecycleOwner Compose UI থেকে lifecycle-runtime-compose-এ স্থানান্তরিত হয়েছে যাতে এর Compose-ভিত্তিক সহায়ক API গুলি Compose UI-এর বাইরে ব্যবহার করা যায়। অবদানের জন্য ধন্যবাদ জ্যাক ওয়ার্টন। ( I6c41b , b/328263448 )

সংস্করণ 2.8.0-alpha02

২১ ফেব্রুয়ারী, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.0-alpha02 প্রকাশিত হয়েছে। সংস্করণ 2.8.0-alpha02-এ এই কমিটগুলি রয়েছে।

নতুন বৈশিষ্ট্য

• dropUnlessResumed এবং dropUnlessStarted API গুলি যোগ করা হয়েছে যা আপনাকে LifecycleOwner প্রদত্ত Lifecycle.State এর নিচে নেমে যাওয়ার পরেও ড্রপ ক্লিক বা অন্যান্য ইভেন্টগুলি করতে দেয়। উদাহরণস্বরূপ, অন্য স্ক্রিনে রূপান্তর শুরু হওয়ার পরে ক্লিক ইভেন্টগুলি পরিচালনা করা এড়াতে এটি নেভিগেশন কম্পোজের সাথে ব্যবহার করা যেতে পারে: onClick: () -> Unit = dropUnlessResumed { navController.navigate(NEW_SCREEN) } ( Icba83 , b/317230685 )

কোটলিন রূপান্তর

• ViewModel এখন Kotlin ( I16f26 , b/214568825 ) ভাষায় লেখা আছে।
• lifecycle-viewmodel-ktx kotlin এক্সটেনশনগুলি এখন বেস লাইফসাইকেল মডিউলে স্থানান্তরিত করা হয়েছে। ( Id787b , b/274800183 )
• lifecycle-runtime-ktx kotlin এক্সটেনশনগুলি এখন বেস লাইফসাইকেল মডিউলে স্থানান্তরিত করা হয়েছে। ( Ic3686 , b/274800183 )
• lifecycle-livedata-core-ktx kotlin এক্সটেনশনগুলি এখন বেস লাইফসাইকেল মডিউলে স্থানান্তরিত করা হয়েছে। ( I54a3d , b/274800183 )

কোটলিন মাল্টিপ্ল্যাটফর্ম সামঞ্জস্যতা

• Lifecycle , LifecycleOwner , LifecycleObserver , Lifecycle.State , Lifecycle.Event , এবং LifecycleRegistry এর মূল Lifecycle API গুলি এখন Kotlin Multiplatform-এর সাথে সামঞ্জস্যপূর্ণ আর্টিফ্যাক্টে পাঠানো হয়। ( b/317249252 )

API পরিবর্তনগুলি

• কী ছাড়া LifecycleStartEffect এবং LifecycleResumeEffect কল করা এখন একটি ত্রুটি, কারণ এই API গুলি DisposableEffect API এর মতো একই নিয়ম অনুসরণ করে। ( Ib0e0c , b/323518079 )
• ViewModel now uses AutoCloseable instead of Closeable . That is a backward compatible change. ( I27f8e , b/214568825 )
• Deprecated LiveDataReactiveStreams.toPublisher(lifecycleOwner, liveData) in favor of LiveData.toPublisher(lifecycleOwner) . ( Iabe29 , b/262623005 )

External Contribution

• Thanks Ivan Matkov from Jetbrains for helping move Lifecycle to Kotlin Multiplatform. ( aosp/2926690 , I0c5ac , If445d )

Version 2.8.0-alpha01

January 24, 2024

androidx.lifecycle:lifecycle-*:2.8.0-alpha01 is released. Version 2.8.0-alpha01 contains these commits.

নতুন বৈশিষ্ট্য

• ViewModel now supports adding Closeable objects with a key that allows retrieving them via getCloseable() . ( I3cf63 )

Version 2.7

সংস্করণ 2.7.0

January 10, 2024

androidx.lifecycle:lifecycle-*:2.7.0 is released. Version 2.7.0 contains these commits.

Important changes since 2.6.0

• TestLifecycleOwner now includes a suspending function setCurrentState() which ensures that the state change and all LifecycleObserver callbacks are completed before returning. Notably, unlike setting the currentState property directly, this does not use runBlocking , making it safe to use within a coroutine such as one provided by runTest .
• The LiveData extensions of map and switchMap now mirror the behavior of distinctUntilChanged - if the LiveData has a value set, the map / switchMap function will be immediately called to populate the value of the returned LiveData . This ensures that the initial value will be set as part of the first composition (when used with observeAsState() ), but does not change the observation behavior - updates values from the source LiveData will still only apply once you start observing the LiveData .
• This release fixes an issue where SavedStateHandle would not properly restore custom Parcelable classes after process death and recreation. Due to type information that is lost by the Android framework, arrays of custom Parcelables require additional work (manually creating a typed array of the right type) and the documentation on get , getLiveData , and getStateFlow now specifically calls this limitation out.
• The proguard keep rules associated with LifecycleObserver have been removed. This means that proguarded code that wishes to use APIs via reflection (such as using the long since deprecated @OnLifecycleEvent annotation) will need to provide their own keep rules for their specific use case.

Lifecycle Event Observability

• As an alternative to using a LifecycleEventObserver , you can now observe a Flow of Lifecycle.Event via the Lifecycle.asFlow() extension method.
• Jetpack Compose users can now use LifecycleEventEffect to run Compose side effects based on Lifecycle.Event .

@Composable
fun HomeScreen(viewModel: HomeViewModel = viewModel()) {
  LifecycleEventEffect(Lifecycle.Event.ON_RESUME) {
    viewModel.refreshData()
  }
  // …
}

• Jetpack Compose users can use LifecycleStartEffect and LifecycleResumeEffect to handle pairs of events - started to stopped and resumed to paused, respectively. This API mirrors the one found in DisposableEffect and is suitable for cases where the change being made when the state is going up needs to be reversed when going back down.

fun HomeScreen(viewModel: HomeViewModel = viewModel()) {
  LifecycleStartEffect(viewModel) {
    val timeTracking = viewModel.startTrackingTimeOnScreen()
    onStopOrDispose {
      timeTracking.stopTrackingTimeOnScreen()
    }
  }
  // …
}

See Run code on lifecycle events for more information.

Lifecycle State Observability

• The current Lifecycle.State can now be observed via the Lifecycle.currentStateFlow property, which returns a StateFlow where the value is the current Lifecycle.State .
• Jetpack Compose users can use the Lifecycle.currentStateAsState() extension to directly expose Lifecycle.State as Compose State . This is equivalent (and a shorter alternative) to lifecycle.currentStateFlow.collectAsState() .

See Collect lifecycle state with flows for more information.

Version 2.7.0-rc02

১৩ ডিসেম্বর, ২০২৩

androidx.lifecycle:lifecycle-*:2.7.0-rc02 is released. Version 2.7.0-rc02 contains these commits.

Bug Fixes

• Fixed an issue where SavedStateHandle would not properly restore custom Parcelable classes after process death and recreation. Due to type information that is lost by the Android framework, arrays of custom Parcelables require additional work (manually creating a typed array of the right type) and the documentation on get , getLiveData , and getStateFlow now specifically calls this limitation out. ( I0b55a )

Version 2.7.0-rc01

১৫ নভেম্বর, ২০২৩

androidx.lifecycle:lifecycle-*:2.7.0-rc01 is released. Version 2.7.0-rc01 contains these commits.

Bug Fixes

• LifecycleStartEffect and LifecycleResumeEffect now correctly dispose and recreate the effect block if the LifecycleOwner is changed. ( Ia25c6 )

Version 2.7.0-beta01

১ নভেম্বর, ২০২৩

androidx.lifecycle:lifecycle-*:2.7.0-beta01 is released with no changes. Version 2.7.0-beta01 contains these commits.

• A beta version bump, no major changes to this release version.

Version 2.7.0-alpha03

October 18, 2023

androidx.lifecycle:lifecycle-*:2.7.0-alpha03 is released. Version 2.7.0-alpha03 contains these commits.

নতুন বৈশিষ্ট্য

• lifecycle-runtime-testing now contains a new Lint check to avoid setting the Lifecycle.State of the TestLifecycleOwner by using the currentState field when inside of a coroutine. The Lint check now suggests the suspending setCurrentState which allows setting the Lifecycle.State without blocking. ( Icf728 , b/297880630 )

Bug Fixes

• Fixed an issue with LiveData.switchMap where returning the same LiveData instance both on the initial call and a subsequent call would prevent the LiveData instance from being added as a source. ( Ibedcba7 )

Version 2.7.0-alpha02

৬ সেপ্টেম্বর, ২০২৩

androidx.lifecycle:lifecycle-*:2.7.0-alpha02 is released. Version 2.7.0-alpha02 contains these commits.

নতুন বৈশিষ্ট্য

• TestLifecycleOwner now includes the suspending function setCurrentState() to give users the option of using TestLifecycleOwner from within a coroutine such as one provided by runTest . ( I329de , b/259344129 )

API Changes

• All files from the lifecycle-livedata-ktx modules have been moved into the main lifecycle-livedata module. ( I10c6f , b/274800183 )

আচরণগত পরিবর্তন

• The LiveData.map() and LiveData.switchMap() extensions now sets the value of the returned LiveData if the previous LiveData has had a value set on it, ensuring that using the resulting LiveData in Jetpack Compose has the right state on the initial composition. ( I91d2b , b/269479952 )
• ViewModel 's addCloseable() now immediately closes the Closeable if the ViewModel has already received a call to onCleared() . ( I4712e , b/280294730 )

Bug Fixes

• From Lifecycle 2.6.2 : Fixed an issue where SavedStateHandle would not correctly be restored after process death if the state was restored, save() was called without actually saving the state in the parent SavedStateRegistry , and then the state was restored again. This fixes the interaction between rememberSaveable and Navigation Compose's NavHost . ( aosp/2729289 )

Version 2.7.0-alpha01

July 26, 2023

androidx.lifecycle:lifecycle-*:2.7.0-alpha01 is released. Version 2.7.0-alpha01 contains these commits.

API Changes

• Lifecycle.State is now Compose-observable via Lifecycle.currentStateFlow , which returns a StateFlow where the value is the current Lifecycle.State . ( Ib212d , b/209684871 )
• Lifecycle.Event s can now able to be observed as a Flow with Lifecycle.asFlow(). ( If2c0f , b/176311030 )
• LifecycleResumeEffect API has been added to run Compose SideEffect s based on both Lifecycle.Event.ON_RESUME and Lifecycle.Event.ON_PAUSE event callbacks. ( I60386 , b/235529345 )
• LifecycleStartEffect API has been added to run Compose SideEffect s based on Lifecycle.Event.ON_START and Lifecycle.Event.ON_STOP event callbacks. ( I5a8d1 , b/235529345 )
• LifecycleEventEffect API has been added to run Compose SideEffect s based on Lifecycle.Event . ( Ic9794 , b/235529345 )
• Lifecycle.collectAsState() extension has been added to directly expose Lifecycle.State as Compose State . This is equivalent (and a shorter alternative) to lifecycle.currentStateFlow.collectAsState() . ( I11015 , b/235529345 )

Bug Fixes

• The LiveData.distinctUntilChanged() extension now sets the value of the returned LiveData if the previous LiveData has had a value set on it. This does not change the observation behavior - updated values from the source LiveData will still only apply once you start observing the LiveData returned from distinctUntilChanged() . ( Ib482f )
• The proguard keep rules associated with LifecycleObserver have been removed. This means that proguarded code that wishes to use APIs via reflection will need to provide their own keep rules for their specific use case. ( Ia12fd )

Version 2.6

Version 2.6.2

৬ সেপ্টেম্বর, ২০২৩

androidx.lifecycle:lifecycle-*:2.6.2 is released. Version 2.6.2 contains these commits.

Bug Fixes

• Fixed an issue where SavedStateHandle would not correctly be restored after process death if the state was restored, save() was called without actually saving the state in the parent SavedStateRegistry , and then the state was restored again. This fixes the interaction between rememberSaveable and Navigation Compose's NavHost . ( aosp/2729289 )

Version 2.6.1

২২ মার্চ, ২০২৩

androidx.lifecycle:lifecycle-*:2.6.1 is released. Version 2.6.1 contains these commits.

Dependency Updates

• lifecycle-viewmodel-savedstate now depends on SavedState 1.2.1 . ( cd7251 )
• Lifecycle now depends on ProfileInstaller 1.3.0 . ( f9d30b )

সংস্করণ 2.6.0

৮ মার্চ, ২০২৩

androidx.lifecycle:lifecycle-*:2.6.0 is released. Version 2.6.0 contains these commits.

Important changes since 2.5.0

• LiveData now includes a new isInitialized property that indicates whether an explicit value has ever been set on the LiveData , allowing you to distinguish between liveData.value returning null because no value has ever been set or an explicit null value.
• MediatorLiveData now includes a constructor to set an initial value.
• Added a new extension on StateFlow and Flow of collectAsStateWithLifecycle() that collect from flows and represents its latest value as Compose State in a lifecycle-aware manner.
• Lifecycle.launchWhenX methods and Lifecycle.whenX methods have been deprecated as the use of a pausing dispatcher can lead to wasted resources in some cases. It is recommended to use Lifecycle.repeatOnLifecycle . For more information about one-time suspending work, please see this explanation on why this is inherently unsafe.
• Kotlin Conversion - A large number of Lifecycle classes have been converted to Kotlin. All converted classes still retain their binary compatibility with previous versions. The following classes have source incompatible changes for classes written in Kotlin: ViewTreeLifecycleOwner , LiveDataReactiveStreams , HasDefaultViewModelProviderFactory , ViewTreeViewModelStoreOwner , Transformations , ViewModelStoreOwner , LifecycleOwner

The table below provides the source conversions for the new version of lifecycle.

• The nullability of the onChanged method of a Observer created in Kotlin now matches the nullability of the generic type. If you want Observer.onChanged() to accept a nullable type, you must instantiate the Observer with a nullable type.
• These classes were also converted to Kotlin, but remain source compatible: DefaultLifecycleObserver , LifecycleEventObserver , Lifecycle , LifecycleRegistry , LifecycleObserver , ViewModelStore , AndroidViewModel , AbstractSavedStateViewModelFactory , LifecycleService , ServiceLifecycleDispatcher , and ProcessLifecycleOwner

Version 2.6.0-rc01

February 22, 2023

androidx.lifecycle:lifecycle-*:2.6.0-rc01 is released. Version 2.6.0-rc01 contains these commits.

Bug Fixes

• The LiveData.distinctUntilChanged() extension now sets the value of the returned LiveData if the previous LiveData has had a value set on it. This does not change the observation behavior - updated values from the source LiveData will still only apply once you start observing the LiveData returned from distinctUntilChanged() . ( Ib482f )

Version 2.6.0-beta01

৮ ফেব্রুয়ারী, ২০২৩

androidx.lifecycle:lifecycle-*:2.6.0-beta01 is released. Version 2.6.0-beta01 contains these commits.

Kotlin Conversions

• LifecycleOwner is now written in Kotlin. This is a source incompatible change for classes written in Kotlin - they must now override the lifecycle property rather than implementing the previous getLifecycle() function. ( I75b4b , b/240298691 )
• ViewModelStoreOwner is now in Kotlin. This is a source incompatible change for classes written in Kotlin - they must now override the viewModelStore property rather than implementing the previous getViewModelStore() function. ( I86409 , b/240298691 )
• The Kotlin extension on LifecycleOwner that provides the lifecycleScope field has been moved to the lifecycle-common artifact from lifecycle-runtime-ktx . ( I41d78 , b/240298691 )
• The Kotlin extension on Lifecycle that provides the coroutineScope field has been moved to the lifecycle-common artifact from lifecycle-runtime-ktx . ( Iabb91 , b/240298691 )

Version 2.6.0-alpha05

২৫ জানুয়ারী, ২০২৩

androidx.lifecycle:lifecycle-*:2.6.0-alpha05 is released. Version 2.6.0-alpha05 contains these commits.

Kotlin Conversions

• Transformations is now written in Kotlin. This is a source incompatible change for those classes written in Kotlin that were directly using syntax such as Transformations.map - Kotlin code must now use the Kotlin extension method syntax that was previously only available when using lifecycle-livedata-ktx . When using the Java programming language, the versions of these methods that take an androidx.arch.core.util.Function method are deprecated and replaced with the versions that take a Kotlin Function1 . This change maintains binary compatibility. ( I8e14f )
• ViewTreeViewModelStoreOwner is now written in Kotlin. This is a source incompatible change for those classes written in Kotlin - you must now directly import and use the Kotlin extension methods on View of androidx.lifecycle.setViewTreeViewModelStoreOwner and androidx.lifecycle.findViewTreeViewModelStoreOwner to set and find a previously set owner. This is binary compatible and remains source compatible for implementations written in the Java programming language. ( Ia06d8 , Ib22d8 , b/240298691 )
• The HasDefaultViewModelProviderFactory interface is now written in Kotlin. This is a source incompatible change for classes written in Kotlin - they must now override the defaultViewModelProviderFactory and defaultViewModelCreationExtras properties rather than implementing the previous corresponding functions. ( Iaed9c , b/240298691 )
• Observer is now written in Kotlin. Its onChanged() method now uses the name value for its parameter. ( Iffef2 , I4995e , b/240298691 )
• AndroidViewModel , AbstractSavedStateViewModelFactory , LifecycleService , ServiceLifecycleDispatcher , and ProcessLifecycleOwner are now written in Kotlin ( I2e771 , Ibae40 , I160d7 , I08884 , I1cda7 , b/240298691 )

Version 2.6.0-alpha04

১১ জানুয়ারী, ২০২৩

androidx.lifecycle:lifecycle-*:2.6.0-alpha04 is released. Version 2.6.0-alpha04 contains these commits.

নতুন বৈশিষ্ট্য

• LiveData now includes a new isInitialized property that indicates whether an explicit value has ever been set on the LiveData , allowing you to distinguish between liveData.value returning null because no value has ever been set or an explicit null value. ( Ibd018 )

API Changes

• The collectAsStateWithLifecycle() APIs of lifecycle-runtime-compose are no longer in experimental status. ( I09d42 , b/258835424 )
• Lifecycle.launchWhenX methods and Lifecycle.whenX methods have been deprecated as the use of a pausing dispatcher can lead to wasted resources in some cases. It is recommended to use Lifecycle.repeatOnLifecycle . ( Iafc54 , b/248302832 )

Kotlin Conversions

• ViewTreeLifecycleOwner is now written in Kotlin. This is a source incompatible change for those classes written in Kotlin - you must now directly import and use the Kotlin extension methods on View of androidx.lifecycle.setViewTreeLifecycleOwner and androidx.lifecycle.findViewTreeLifecycleOwner to set and find a previously set owner. This replaces the previous Kotlin extension in lifecycle-runtime-ktx . This is binary compatible and remains source compatible for implementations written in the Java programming language. ( I8a77a , I5234e , b/240298691 )
• LiveDataReactiveStreams is now written in Kotlin. The Kotlin extensions previously in lifecycle-reactivestreams-ktx have been moved into the lifecycle-reactivestreams module and have become the primary surface for code written in Kotlin. This is a source incompatible change for code written in Kotlin if you were not already using the Kotlin extension method APIs. ( I2b1b9 , I95d22 , b/240298691 )
• DefaultLifecycleObserver , LifecycleEventObserver , Lifecycle , LifecycleRegistry , LifecycleObserver , and ViewModelStore are now written in Kotlin ( Iadffd , ( I60034 , I8c52c , I9593d , I01fe1 , I59a23 , b/240298691 )

Bug Fixes

• SavedStateHandle no longer crashes with a ClassCastException when calling get() with the incorrect class type. ( I6ae7c )

Version 2.6.0-alpha03

October 24, 2022

androidx.lifecycle:lifecycle-*:2.6.0-alpha03 is released. Version 2.6.0-alpha03 contains these commits.

Bug Fixes

• Fixed an issue with constraints between different Lifecycle modules not working as intended. ( I18d0d , b/249686765 )
• Errors thrown by LifecycleRegistry.moveToState() now include a more helpful error messaging that informs developers of the component causing the error. ( Idf4b2 , b/244910446 )

Version 2.6.0-alpha02

৭ সেপ্টেম্বর, ২০২২

androidx.lifecycle:lifecycle-*:2.6.0-alpha02 is released. Version 2.6.0-alpha02 contains these commits.

API Changes

• MediatorLiveData now includes a constructor to set an initial value. ( Ib6cc5 , b/151244085 )

Bug Fixes

• Lifecycle artifacts now include constraints that ensure that all inter-dependent Lifecycle artifacts use the same version, automatically upgrading other dependencies when one is upgraded. b/242871265
• FlowLiveData.asFlow() now creates a callbackFlow rather than using its own Channel implementation to ensure thread-safety and context preservation. ( I4a8b2 , b/200596935 )
• FlowLiveData 's asLiveData function will now preserve the initial value of a StateFlow when creating the new LiveData object. ( I3f530 , b/157380488 )
• From Lifecycle 2.5.1 : Custom implementations of AndroidViewModelFactory now correctly calls the create(modelClass) function when using the stateful constructor with Lifecycle 2.4+ ( I5b315 , b/238011621 )

Version 2.6.0-alpha01

২৯ জুন, ২০২২

androidx.lifecycle:lifecycle-*:2.6.0-alpha01 is released. Version 2.6.0-alpha01 contains these commits.

নতুন বৈশিষ্ট্য

• Added a new extension on StateFlow and Flow of collectAsStateWithLifecycle that collect from flows and represents its latest value as Compose State in a lifecycle-aware manner. The flow is collected and the new emission is set to the State's value when the lifecycle is at least in a certain Lifecycle.State . When the lifecycle falls below that Lifecycle.State , the flow collection stops and the State's value is not updated. ( I1856e , b/230557927 )

Version 2.5

Version 2.5.1

২৭ জুলাই, ২০২২

androidx.lifecycle:lifecycle-*:2.5.1 is released. Version 2.5.1 contains these commits.

Bug Fixes

• Custom implementations of AndroidViewModelFactory now correctly call the create(modelClass) function when using the stateful AndroidViewModelFactory constructor with Lifecycle 2.4+. ( I5b315 , b/238011621 )

সংস্করণ 2.5.0

২৯ জুন, ২০২২

androidx.lifecycle:lifecycle-*:2.5.0 is released. Version 2.5.0 contains these commits.

Important changes since 2.4.0

• SavedStateHandle now offers a getStateFlow() API that returns a Kotlin StateFlow for monitoring value changes as an alternative to using LiveData .

• ViewModel CreationExtras - when writing a custom ViewModelProvider.Factory , it is no longer required to extend AndroidViewModelFactory or AbstractSavedStateViewModelFactory to gain access to an Application or SavedStateHandle , respectively. Instead, these fields are provided to every ViewModelProvider.Factory subclass as CreationExtras via the new overload of create : create(Class<T>, CreationExtras) . These extras are provided automatically by your Activity or Fragment when using Activity 1.5.0 and Fragment 1.5.0 , respectively.

  class CustomFactory : ViewModelProvider.Factory {
      override fun <T : ViewModel> create(modelClass: Class<T>, extras: CreationExtras): T {
          return when (modelClass) {
              HomeViewModel::class -> {
                  // Get the Application object from extras
                  val application = checkNotNull(extras[ViewModelProvider.AndroidViewModelFactory.APPLICATION_KEY])
                  // Pass it directly to HomeViewModel
                  HomeViewModel(application)
              }
              DetailViewModel::class -> {
                  // Create a SavedStateHandle for this ViewModel from extras
                  val savedStateHandle = extras.createSavedStateHandle()
                  DetailViewModel(savedStateHandle)
              }
              else -> throw IllegalArgumentException("Unknown class $modelClass")
          } as T
      }
  }
  

• lifecycle-viewmodel now provides a viewModelFactory Kotlin DSL that allows you define your ViewModelProvider.Factory in terms of one or more lambda initializers, one for each particular ViewModel class your custom factory supports, using CreationExtras as the primary data source.

  val customFactory = viewModelFactory {
      // The return type of the lambda automatically sets what class this lambda handles
      initializer {
          // Get the Application object from extras provided to the lambda
          val application = checkNotNull(get(ViewModelProvider.AndroidViewModelFactory.APPLICATION_KEY))
          HomeViewModel(application)
      }
      initializer {
          val savedStateHandle = createSavedStateHandle()
          DetailViewModel(savedStateHandle)
      }
  }
  

• lifecycle-viewmodel-compose now offers a viewModel() API that takes a lambda factory for creating a ViewModel instance without requiring the creation of a custom ViewModelProvider.Factory .

  // Within a @Composable, you can now skip writing a custom Factory
  // and instead write a lambda to do the initialization of your ViewModel
  val detailViewModel = viewModel {
    // This lambda is only called the first time the ViewModel is created
    // and all CreationExtras are available inside the lambda
    val savedStateHandle = createSavedStateHandle()
    DetailViewModel(savedStateHandle)
  }
  

• SavedStateHandle Compose Saver Integration - the lifecycle-viewmodel-compose artifact now contains new experimental APIs in SavedStateHandle.saveable that allow rememberSaveable like behavior backed by the SavedStateHandle of a `ViewModel.

  class ListScreenViewModel(handle: SavedStateHandle): ViewModel() {
      // This value survives both configuration changes and process death and recreation
      val editMode by handle.saveable { mutableStateOf(false) }
  }
  

• Added an addCloseable() API and a new constructor overload that allow you to add one or more Closeable objects to the ViewModel that will be closed when the ViewModel is cleared without requiring any manual work in onCleared() .

  For instance, to create a coroutine scope that you can inject into a ViewModel, but control via testing, you can create a CoroutineScope that implements Closeable :

  class CloseableCoroutineScope(
      context: CoroutineContext = SupervisorJob() + Dispatchers.Main.immediate
  ) : Closeable, CoroutineScope {
      override val coroutineContext: CoroutineContext = context
      override fun close() {
          coroutineContext.cancel()
     }
  }
  

  Which can then be used in your ViewModel constructor while maintaining the same lifetime as viewModelScope :

  class TestScopeViewModel(
      val customScope: CloseableCoroutineScope = CloseableCoroutineScope()
  ) : ViewModel(customScope) {
      // You can now use customScope in the same way as viewModelScope
  }
  

আচরণগত পরিবর্তন

• Attempting to move the Lifecycle.State from INITIALIZED to DESTROYED will now always throw an IllegalStateException regardless of whether the Lifecycle has an attached observer.
• LifecycleRegistry will now clear their observers when they reach the DESTROYED state.

Version 2.5.0-rc02

June 15, 2022

androidx.lifecycle:lifecycle-*:2.5.0-rc02 is released. Version 2.5.0-rc02 contains these commits.

Bug Fixes

• ViewModelProvider will no longer crash when mixing previous versions of compileOnly Lifecycle dependencies with versions 2.5+. ( I81a66 , b/230454566 )

Version 2.5.0-rc01

১১ মে, ২০২২

androidx.lifecycle:lifecycle-*:2.5.0-rc01 is released. Version 2.5.0-rc01 contains these commits.

Bug Fixes

• MediatorLiveData.addSource() now throws a NullPointerException when passed a null source instead of propagating the null source to observers.( Ibd0fb , b/123085232 )

Version 2.5.0-beta01

April 20, 2022

androidx.lifecycle:lifecycle-*:2.5.0-beta01 is released. Version 2.5.0-beta01 contains these commits.

API Changes

• Added SavedStateHandle.saveable property delegates to use property names as keys for persisting state into the SavedStateHandle ( I8bb86 , b/225014345 )

Bug Fixes

• Fixed an issue where nesting one NavHost within another NavHost in a non-primary bottom navigation tab would lead to an IllegalStateException when using multiple back stacks. ( I11bd5 , b/228865698 )

Version 2.5.0-alpha06

৬ এপ্রিল, ২০২২

androidx.lifecycle:lifecycle-*:2.5.0-alpha06 is released. Version 2.5.0-alpha06 contains these commits.

নতুন বৈশিষ্ট্য

• Add experimental MutableState overload to SavedStateHandle.saveable for parity with rememberSaveable ( I38cfe , b/224565154 )

API Changes

• CreationExtras is now abstract instead of sealed. ( Ib8a7a )

Bug Fixes

• Fixed an IllegalStateException: Already attached to lifecycleOwner error caused by SavedStateHandleController . ( I7ea47 , b/215406268 )

Version 2.5.0-alpha05

২৩ মার্চ, ২০২২

androidx.lifecycle:lifecycle-*:2.5.0-alpha05 is released. Version 2.5.0-alpha05 contains these commits.

নতুন বৈশিষ্ট্য

• The lifecycle-viewmodel-compose module now provides SavedStateHandleSaver , an experimental API that ensures values in a SavedStateHandle are integrated correctly with the same saved instance state that rememberSaveable uses. ( Ia88b7 , b/195689777 )

API Changes

• Fixed a compatibility issue with Lifecycle 2.3 and newer Lifecycle versions in Java. ( I52c8a , b/219545060 )

Bug Fixes

• SavedStateViewFactory now supports using CreationExtras even when it was initialized with a SavedStateRegistryOwner . If extras are provided, the initialized arguments are ignored. ( I6c43b , b/224844583 )

Version 2.5.0-alpha04

March 9, 2022

androidx.lifecycle:lifecycle-*:2.5.0-alpha04 is released. Version 2.5.0-alpha04 contains these commits.

API Changes

• SavedStateHandle now offers a getStateFlow() API that returns a Kotlin StateFlow for monitoring value changes as an alternative to using LiveData . ( Iad3ab , b/178037961 )

Version 2.5.0-alpha03

February 23, 2022

androidx.lifecycle:lifecycle-*:2.5.0-alpha03 is released. Version 2.5.0-alpha03 contains these commits.

নতুন বৈশিষ্ট্য

• Added an addCloseable() API and a new constructor overload that allow you to add one or more Closeable objects to the ViewModel that will be closed when the ViewModel is cleared without requiring any manual work in onCleared() . ( I55ea0 )
• lifecycle-viewmodel now provides an InitializerViewModelFactory that allows you to add lambda for handling particular ViewModel classes, using CreationExtras as the primary data source. ( If58fc , b/216687549 )
• lifecycle-viewmodel-compose now offers a viewModel() API that takes a lambda factory for creating a ViewModel instance without requiring the creation of a custom ViewModelProvider.Factory . ( I97fbb , b/216688927 )

API Changes

• You can now create a ViewModel with CreationExtras via lifecycle-viewmodel-compose . ( I08887 , b/216688927 )

আচরণগত পরিবর্তন

• Attempting to move the Lifecycle.State from INITIALIZED to DESTROYED will now always throw an IllegalStateException regardless of whether the Lifecycle has an attached observer. ( I7c390 , b/177924329 )
• LifecycleRegistry will now clear their observers when they reach the DESTROYED state. ( I4f8dd , b/142925860 )

Version 2.5.0-alpha02

৯ ফেব্রুয়ারী, ২০২২

androidx.lifecycle:lifecycle-*:2.5.0-alpha02 is released. Version 2.5.0-alpha02 contains these commits.

API Changes

• SavedStateHandle and SavedStateViewModelFactory have been converted to Kotlin. This has improved the nullability of the generics in both classes. ( Ib6ce2 , b/216168263 , I9647a , b/177667711 )
• The LiveData switchMap function parameter can now have a nullable output. ( I40396 , b/132923666 )
• The LiveData -ktx extensions are now annotated with @CheckResult to enforce that the result is used when calling these functions. ( Ia0f05 , b/207325134 )

আচরণগত পরিবর্তন

• SavedStateHandle now properly stores the defaultValue when no value for the specified key exists. ( I1c6ce , b/178510877 )

Bug Fixes

• From Lifecycle 2.4.1 : Updated lifecycle-process to depend on Startup 1.1.1 to ensure that fixes that prevent ProcessLifecycleInitializer from throwing a StartupException are available by default. ( Ib01df , b/216490724 )
• There is now an improved error message when custom AndroidViewModel classes have parameters in the wrong order and attempt to create a ViewModel . ( I340f7 , b/177667711 )
• You can now create a view model via CreationExtras using the AndroidViewModelFactory without setting an application. ( I6ebef , b/217271656 )

Version 2.5.0-alpha01

২৬ জানুয়ারী, ২০২২

androidx.lifecycle:lifecycle-*:2.5.0-alpha01 is released. Version 2.5.0-alpha01 contains these commits.

ViewModel CreationExtras

With this release, we are laying the groundwork for restructuring how a ViewModel is constructed. Instead of a rigid set of subclasses of ViewModelProvider.Factory that each add additional functionality (allowing an Application constructor parameter via AndroidViewModelFactory , allowing a SavedStateHandle constructor parameter via SavedStateViewModelFactory and AbstractSavedStateViewModelFactory , etc.), we are moving to a world of stateless factories that rely on a new concept, CreationExtras . ( Ia7343 , b/188691010 , b/188541057 )

With this change, ViewModelProvider no longer makes direct calls into the previous create(Class<T>) method of ViewModelProvider.Factory . Instead, it calls into a new overload of create : create(Class<T>, CreationExtras) . This means that any direct implementation of the ViewModelProvider.Factory instance now has access to each of these new CreationExtras :

• ViewModelProvider.NewInstanceFactory.VIEW_MODEL_KEY : this String provides access to the custom key you passed to ViewModelProvider.get() .
• ViewModelProvider.AndroidViewModelFactory.APPLICATION_KEY provides access to the Application class.
• SavedStateHandleSupport.SAVED_STATE_REGISTRY_OWNER_KEY provides access to the SavedStateRegistryOwner that is being used to construct this ViewModel.
• SavedStateHandleSupport.VIEW_MODEL_STORE_OWNER_KEY provides access to the ViewModelStoreOwner that is being used to construct this ViewModel.
• SavedStateHandleSupport.DEFAULT_ARGS_KEY provides access to the Bundle of arguments that should be used to construct a SavedStateHandle .

These extras are provided by default when using Activity 1.5.0-alpha01 , Fragment 1.5.0-alpha01 , and Navigation 2.5.0-alpha01 . If you use an earlier version of those libraries, your CreationExtras will be empty - all of the existing subclasses of ViewModelProvider.Factory have been rewritten to support both the legacy creation path used by earlier versions of those libraries and the CreationExtras path which will be used going forward.

These CreationExtras allow you to construct a ViewModelProvider.Factory that passes just the information you need to each ViewModel without relying on a strict hierarchy of Factory subclasses:

class CustomFactory : ViewModelProvider.Factory {
    override fun <T : ViewModel> create(modelClass: Class<T>, extras: CreationExtras): T {
        return when (modelClass) {
            HomeViewModel::class -> {
                // Get the Application object from extras
                val application = checkNotNull(extras[ViewModelProvider.AndroidViewModelFactory.APPLICATION_KEY])
                // Pass it directly to HomeViewModel
                HomeViewModel(application)
            }
            DetailViewModel::class -> {
                // Create a SavedStateHandle for this ViewModel from extras
                val savedStateHandle = extras.createSavedStateHandle()
                DetailViewModel(savedStateHandle)
            }
            else -> throw IllegalArgumentException("Unknown class $modelClass")
        } as T
    }
}

We use the createSavedStateHandle() Kotlin extension function on CreationExtras from SavedStateHandleSupport to construct a SavedStateHandle only for the one ViewModel that needs it. ( Ia6654 , b/188541057 )

Custom CreationExtras can be provided by overriding getDefaultViewModelCreationExtras() in your ComponentActivity or Fragment , thus making them available to your custom ViewModelProvider.Factory as a built in form of assisted injection. These extras will automatically be made available to your custom Factory when used directly with ViewModelProvider or when using the by viewModels() and by activityViewModels() Kotlin property extensions. ( I79f2b , b/207012584 , b/207012585 , b/207012490 )

Bug Fixes

• Fixed an issue where the default value provided to a SavedStateHandle would reappear after process death and recreation, even if it was specifically removed from the SavedStateHandle . As a consequence of this, SavedStateHandle will no longer merge default values and restored values together, instead only using the restored values as the source of truth. ( I53a4b )

Version 2.4

Version 2.4.1

৯ ফেব্রুয়ারী, ২০২২

androidx.lifecycle:lifecycle-*:2.4.1 is released. Version 2.4.1 contains these commits.

Bug Fixes

• Backported from Lifecycle 2.5.0-alpha01 : Fixed an issue where the default value provided to a SavedStateHandle would re-appear after process death and recreation, even if it was specifically removed from the SavedStateHandle . As a consequence of this, SavedStateHandle will no longer merge default values and restored values together, instead only using the restored values as the source of truth. ( I53a4b )
• lifecycle-process now depends on Androidx Startup 1.1.1 which fixed a regression in where using ProcessLifecycleInitializer would cause an StartupException . ( b/216490724 )

সংস্করণ 2.4.0

২৭ অক্টোবর, ২০২১

androidx.lifecycle:lifecycle-*:2.4.0 is released. Version 2.4.0 contains these commits.

Important changes since 2.3.0

• @OnLifecycleEvent was deprecated. LifecycleEventObserver or DefaultLifecycleObserver should be used instead.
• androidx.lifecycle:lifecycle-viewmodel-compose library was added. It provides viewModel() composable and LocalViewModelStoreOwner .
  • Source-breaking change : ViewModelProvider has been rewritten in Kotlin. ViewModelProvider.Factory.create method no longer allows nullable generic.
• New coroutines API were added to androidx.lifecycle:lifecycle-runtime-ktx :
• Lifecycle.repeatOnLifecycle , API that executes a block of code in a coroutine when the Lifecycle is at least in a certain state. The block will cancel and re-launch as the lifecycle moves in and out of the target state;
• Flow.flowWithLifecycle , API that emits values from the upstream Flow when the lifecycle is at least in a certain state.
• DefaultLifecycleObserver was moved from lifecycle.lifecycle-common-java8 to lifecycle.lifecycle-common . lifecycle.lifecycle-common-java8 doesn't provide anymore any additional functionality on top of lifecycle.lifecycle-common , so dependency on it can be replaced by lifecycle.lifecycle-common .
• Non coroutines API from lifecycle-viewmodel-ktx have been moved to the lifecycle-viewmodel module.

• lifecycle-process now uses androidx.startup to initialize the ProcessLifecycleOwner .

  Previously, this was being done by androidx.lifecycle.ProcessLifecycleOwnerInitializer .

  If you used tools:node="remove" the ContentProvider being used to initialize process lifecycle in the past, then you need to do the following instead.

   <provider
      android:name="androidx.startup.InitializationProvider"
      android:authorities=\"${applicationId}.androidx-startup"
      android:exported="false"
      tools:node=\"merge">
      <!-- If you are using androidx.startup to initialize other components -->
      <meta-data
          android:name="androidx.lifecycle.ProcessLifecycleInitializer"
          android:value="androidx.startup"
          tools:node="remove" />
   </provider>
  

  (অথবা)

   <!-- If you want to disable androidx.startup completely. -->
   <provider
      android:name="androidx.startup.InitializationProvider"
      android:authorities="${applicationId}.androidx-startup"
      tools:node="remove">
   </provider>
  

Version 2.4.0-rc01

September 29, 2021

androidx.lifecycle:lifecycle-*:2.4.0-rc01 is released with no changes from Lifecycle 2.4.0-beta01. Version 2.4.0-rc01 contains these commits.

Version 2.4.0-beta01

১৫ সেপ্টেম্বর, ২০২১

androidx.lifecycle:lifecycle-*:2.4.0-beta01 is released. Version 2.4.0-beta01 contains these commits.

API Changes

• @OnLifecycleEvent was deprecated. LifecycleEventObserver or DefaultLifecycleObserver should be used instead. ( I5a8fa )
• DefaultLifecycleObserver was moved from androidx.lifecycle.lifecycle-common-java8 to androidx.lifecycle.lifecycle-common . androidx.lifecycle.lifecycle-common-java8 doesn't provide anymore any additional functionality on top of androidx.lifecycle.lifecycle-common , so dependency on it can be replaced by androidx.lifecycle.lifecycle-common . ( I021aa )
• Non coroutines API from lifecycle-viewmodel-ktx have been moved to the lifecycle-viewmodel module. ( I6d5b2 )

External Contribution

• Thanks dmitrilc for fixing a type in the ViewModel documentation! ( #221 )

Version 2.4.0-alpha03

August 4, 2021

androidx.lifecycle:lifecycle-*:2.4.0-alpha03 is released. Version 2.4.0-alpha03 contains these commits.

API Changes

• Source-breaking change : ViewModelProvider has been rewritten in Kotlin. ViewModelProvider.Factory.create method no longer allows nullable generic. ( I9b9f6 )

আচরণগত পরিবর্তন

• The Lifecycle.repeatOnLifecycle : block is now always invoked serially when repeating execution. ( Ibab33 )

External Contribution

• Thanks chao2zhang for fixing the code snippets in the repeatOnLifecycle documentation. #205 .

Version 2.4.0-alpha02

June 16, 2021

androidx.lifecycle:lifecycle-*:2.4.0-alpha02 is released. Version 2.4.0-alpha02 contains these commits.

নতুন বৈশিষ্ট্য

• Added a new RepeatOnLifecycleWrongUsage lint check to lifecycle-runtime-ktx that detects when repeateOnLifecycle is incorrectly used in onStart() or onResume() . ( 706078 , b/187887400 )

API Changes

• The LifecycleOwner.addRepeatingJob API is removed in favor of Lifecycle.repeatOnLifecycle that respects structured concurrency and is easier to reason about. ( I4a3a8 )
• Make ProcessLifecycleInitializer public so other androidx.startup.Initializer s can use these as dependencies. ( I94c31 )

Bug Fixes

• Fixed an issue with the NullSafeMutableLiveData lint check when the field has modifiers. ( #147 , b/183696616 )
• Fixed another issue with the NullSafeMutableLiveData lint check when using generics. ( #161 , b/184830263 )

External Contribution

• Thanks maxsav for improving the NullSafeMutableLiveData lint check. ( #147 , b/183696616 )
• Thanks kozaxinan for improving the NullSafeMutableLiveData lint check. ( #161 , b/184830263 )

Version 2.4.0-alpha01

২৪ মার্চ, ২০২১

androidx.lifecycle:lifecycle-*:2.4.0-alpha01 is released. Version 2.4.0-alpha01 contains these commits.

আচরণগত পরিবর্তন

• lifecycle-process now uses androidx.startup to initialize the ProcessLifecycleOwner .

  Previously, this was being done by androidx.lifecycle.ProcessLifecycleOwnerInitializer .

  If you used tools:node="remove" the ContentProvider being used to initialize process lifecycle in the past, then you need to do the following instead.

   <provider
      android:name="androidx.startup.InitializationProvider"
      android:authorities=\"${applicationId}.androidx-startup"
      android:exported="false"
      tools:node=\"merge">
      <!-- If you are using androidx.startup to initialize other components -->
      <meta-data
          android:name="androidx.lifecycle.ProcessLifecycleInitializer"
          android:value="androidx.startup"
          tools:node="remove" />
   </provider>
  

  (অথবা)

   <!-- If you want to disable androidx.startup completely. -->
   <provider
      android:name="androidx.startup.InitializationProvider"
      android:authorities="${applicationId}.androidx-startup"
      tools:node="remove">
   </provider>
  

API Changes

• Added a Flow.flowWithLifecycle API that emits values from the upstream Flow when the lifecycle is at least in a certain state using the Lifecycle.repeatOnLifecycle API. This is an alternative to the also new LifecycleOwner.addRepeatinJob API. ( I0f4cd )

Bug Fixes

• From Lifecycle 2.3.1 : The NonNullableMutableLiveData lint rule can now properly differentiate between field variables with different nullability. ( b/169249668 )

Lifecycle Viewmodel Compose Version 1.0.0

Version 1.0.0-alpha07

June 16, 2021

androidx.lifecycle:lifecycle-viewmodel-compose:1.0.0-alpha07 is released. Version 1.0.0-alpha07 contains these commits.

Breaking API Changes

• viewModel() now takes an optional ViewModelStoreOwner , making it easier to work with owners other than the LocalViewModelStoreOwner . For example, you can now use viewModel(navBackStackEntry) to retrieve a ViewModel associated with a particular navigation graph. ( I2628d , b/188693123 )

Version 1.0.0-alpha06

June 2, 2021

androidx.lifecycle:lifecycle-viewmodel-compose:1.0.0-alpha06 is released. Version 1.0.0-alpha06 contains these commits.

Updated to be compatible with Compose version 1.0.0-beta08 .

Version 1.0.0-alpha05

১৮ মে, ২০২১

androidx.lifecycle:lifecycle-viewmodel-compose:1.0.0-alpha05 is released. Version 1.0.0-alpha05 contains these commits.

নতুন বৈশিষ্ট্য

• Updated to be compatible with Compose version 1.0.0-beta07 .

Bug Fixes

• The AndroidManifest files from ui-test-manifest and ui-tooling-data are now compatible with Android 12 ( I6f9de , b/184718994 )

Version 1.0.0-alpha04

৭ এপ্রিল, ২০২১

androidx.lifecycle:lifecycle-viewmodel-compose:1.0.0-alpha04 is released. Version 1.0.0-alpha04 contains these commits.

Dependency Changes

• This version allows androidx.hilt:hilt-navigation-compose and androidx.navigation:navigation-compose to sync dependencies on androidx.compose.compiler:compiler:1.0.0-beta04 and androidx.compose.runtime:runtime:1.0.0-beta04 . For 1.0.0, it is required that the compiler and runtime match.

Version 1.0.0-alpha03

১০ মার্চ, ২০২১

androidx.lifecycle:lifecycle-viewmodel-compose:1.0.0-alpha03 is released. Version 1.0.0-alpha03 contains these commits.

API Changes

• LocalViewModelStoreOwner.current now returns a nullable ViewModelStoreOwner to better determine whether a ViewModelStoreOwner is available in the current composition. APIs that require a ViewModelStoreOwner , such as viewModel() and NavHost , still throw an exception if a ViewModelStoreOwner is not set. ( Idf39a )

Lifecycle-Viewmodel-Compose Version 1.0.0-alpha02

২৪ ফেব্রুয়ারী, ২০২১

androidx.lifecycle:lifecycle-viewmodel-compose:1.0.0-alpha02 is released. Version 1.0.0-alpha02 contains these commits.

API Changes

• LocalViewModelStoreOwner now has a provides functions that can be used with CompositionLocalProvider , replacing the asProvidableCompositionLocal() API. ( I45d24 )

Lifecycle-Viewmodel-Compose Version 1.0.0-alpha01

১০ ফেব্রুয়ারী, ২০২১

androidx.lifecycle:lifecycle-viewmodel-compose:1.0.0-alpha01 is released. Version 1.0.0-alpha01 contains these commits.

নতুন বৈশিষ্ট্য

• The viewModel() composable and LocalViewModelStoreOwner were moved from androidx.compose.ui.viewinterop to this artifact in the androidx.lifecycle.viewmodel.compose package. ( I7a374 )

সংস্করণ 2.3.1

Lifecycle Version 2.3.1

২৪ মার্চ, ২০২১

androidx.lifecycle:lifecycle-*:2.3.1 is released. Version 2.3.1 contains these commits.

Bug Fixes

• The NonNullableMutableLiveData lint rule can now properly differentiate between field variables with different nullability. ( b/169249668 )

সংস্করণ 2.3.0

সংস্করণ 2.3.0

১০ ফেব্রুয়ারী, ২০২১

androidx.lifecycle:lifecycle-*:2.3.0 is released. Version 2.3.0 contains these commits.

Major changes since 2.2.0

• SavedStateHandle support for non-parcelable classes : SavedStateHandle now supports lazy serialization by allowing you to call setSavedStateProvider() for a given key, providing a SavedStateProvider that will get a callback to saveState() when the SavedStateHandle is asked to save its state. See Saving non-parcelable classes .
• Lifecycle Behavior Enforcement :
  • LifecycleRegistry now enforces DESTROYED as a terminal state.
  • LifecycleRegistry now verifies that its methods are called on main thread. It was always a requirement for lifecycles of activities, fragments etc. An addition of observers from non-main threads resulted in hard to catch crashes in runtime. For LifecycleRegistry objects that owned by your own components, you can explicitly opt out from checks by using LifecycleRegistry.createUnsafe(...) , but then you have to ensure that a proper synchronization is in place when this LifecycleRegistry is accessed from different threads.
• Lifecycle State and Event Helpers : Added static helper methods of downFrom(State) , downTo(State) , upFrom(State) , upTo(State) to Lifecycle.Event for generating the Event given a State and transition direction. Added the getTargetState() method that provides the State that the Lifecycle will transition to directly following the Event .
• withStateAtLeast : Added Lifecycle.withStateAtLeast APIs that await a lifecycle state and run a non-suspending block of code synchronously at the point of state change, then resume with the result. These APIs differ from the existing when* methods as they do not permit running suspending code and do not employ a custom dispatcher. ( aosp/1326081 )
• ViewTree APIs : A new ViewTreeLifecycleOwner.get(View) and ViewTreeViewModelStoreOwner.get(View) API allows you to retrieve the containing LifecycleOwner and ViewModelStoreOwner , respectively, given a View instance. You must upgrade to Activity 1.2.0 and Fragment 1.3.0 , and AppCompat 1.3.0-alpha01 or higher to populate this correctly. The findViewTreeLifecycleOwner and findViewTreeViewModelStoreOwner Kotlin extensions are available in lifecycle-runtime-ktx and lifecycle-viewmodel-ktx , respectively.
• LiveData.observe() Kotlin extension deprecation : The LiveData.observe() Kotlin extension necessary to use lambda syntax is now deprecated as it is not necessary when using Kotlin 1.4.

Version 2.3.0-rc01

১৬ ডিসেম্বর, ২০২০

androidx.lifecycle:lifecycle-*:2.3.0-rc01 is released. Version 2.3.0-rc01 contains these commits.

Bug Fixes

• The keys() method of SavedStateHandle is now consistent before and after the state is saved - it now includes keys previously used with setSavedStateProvider() in addition to the keys used with set() and getLiveData() . ( aosp/1517919 , b/174713653 )

External Contribution

• The APIs to suspend Lifecycle-aware coroutines now better handle calls to yield() . Thanks Nicklas Ansman Giertz! ( aosp/1430830 , b/168777346 )

Version 2.3.0-beta01

১ অক্টোবর, ২০২০

androidx.lifecycle:lifecycle-*:2.3.0-beta01 is released. Version 2.3.0-beta01 contains these commits.

API Changes

• The LiveData.observe() Kotlin extension necessary to use lambda syntax is now deprecated as it is not necessary when using Kotlin 1.4. ( I40d3f )

Bug Fixes

• Upgrade androidx to use Kotlin 1.4 ( Id6471 , b/165307851 , b/165300826 )

Documentation Changes

• The liveData builder and asLiveData() docs have been updated to include details about changing the given timeout values. ( aosp/1122324 )

Version 2.3.0-alpha07

১৯ আগস্ট, ২০২০

androidx.lifecycle:lifecycle-*:2.3.0-alpha07 is released. Version 2.3.0-alpha07 contains these commits.

Bug Fixes

• Fixed a crash issue in the NullSafeMutableLiveData Lint check. ( aosp/1395367 )

Version 2.3.0-alpha06

July 22, 2020

androidx.lifecycle:lifecycle-*:2.3.0-alpha06 is released. Version 2.3.0-alpha06 contains these commits.

নতুন বৈশিষ্ট্য

• Added static helper methods of downFrom(State) , downTo(State) , upFrom(State) , upTo(State) to Lifecycle.Event for generating the Event given a State and transition direction. Added the getTargetState() method that provides the State that the Lifecycle will transition to directly following the Event . ( I00887 )
• Added Lifecycle.withStateAtLeast APIs that await a lifecycle state and run a non-suspending block of code synchronously at the point of state change, then resume with the result. These APIs differ from the existing when* methods as they do not permit running suspending code and do not employ a custom dispatcher. ( aosp/1326081 )

আচরণগত পরিবর্তন

• LifecycleRegistry now enforces DESTROYED as a terminal state. ( I00887 )
• LifecycleRegistry now verifies that its methods are called on main thread. It was always a requirement for lifecycles of activities, fragments etc. An addition of observers from non-main threads resulted in hard to catch crashes in runtime. For LifecycleRegistry objects that owned by your own components, you can explicitly opt out from checks by using LifecycleRegistry.createUnsafe(...) , but then you have to ensure that a proper synchronization is in place when this LifecycleRegistry is accessed from different threads ( Ie7280 , b/137392809 )

Bug Fixes

• Fixed a crash in NullSafeMutableLiveData . ( b/159987480 )
• Fixed an ObsoleteLintCustomCheck for Lint checks bundled with lifecycle-livedata-core-ktx (and specifically NullSafeMutableLiveData ). ( b/158699265 )

Version 2.3.0-alpha05

২৪ জুন, ২০২০

androidx.lifecycle:lifecycle-*:2.3.0-alpha05 is released. Version 2.3.0-alpha05 contains these commits.

Bug Fixes

• LiveData now better handles reentrant cases, avoiding duplicate calls to onActive() or onInactive() . ( b/157840298 )
• Fixed an issue where Lint checks would not run when using Android Studio 4.1 Canary 6 or higher. ( aosp/1331903 )

Version 2.3.0-alpha04

June 10, 2020

androidx.lifecycle:lifecycle-*:2.3.0-alpha04 is released. Version 2.3.0-alpha04 contains these commits.

Bug Fixes

• Fixed a crash in the NonNullableMutableLiveData Lint check. ( b/157294666 )
• The NonNullableMutableLiveData Lint check now covers significantly more cases where a null value was set on a MutableLiveData with a non-null type parameter. ( b/156002218 )

Version 2.3.0-alpha03

May 20, 2020

androidx.lifecycle:lifecycle-*:2.3.0-alpha03 are released. Version 2.3.0-alpha03 contains these commits.

নতুন বৈশিষ্ট্য

• SavedStateHandle now supports lazy serialization by allowing you to call setSavedStateProvider() for a given key, providing a SavedStateProvider that will get a callback to saveState() when the SavedStateHandle is asked to save its state. ( b/155106862 )
• A new ViewTreeViewModelStoreOwner.get(View) API allows you to retrieve the containing ViewModelStoreOwner given a View instance. You must upgrade to Activity 1.2.0-alpha05 , Fragment 1.3.0-alpha05 , and AppCompat 1.3.0-alpha01 to populate this correctly. A findViewModelStoreOwner() Kotlin extension has been added to lifecycle-viewmodel-ktx . ( aosp/1295522 )

Bug Fixes

• Fixed an issue that caused the MutableLiveData Lint checks released in Lifecycle 2.3.0-alpha01 from being published alongside the lifecycle-livedata-core-ktx artifact. ( b/155323109 )

Version 2.3.0-alpha02

২৯ এপ্রিল, ২০২০

androidx.lifecycle:lifecycle-*:2.3.0-alpha02 is released. Version 2.3.0-alpha02 contains these commits.

API Changes

• SavedStateViewModelFactory now allows you to pass a null Application to its constructor to better support cases where one is not readily available and support for AndroidViewModel is not needed. ( aosp/1285740 )

Bug Fixes

• Improved cold start performance by avoiding class verification failure on API 28 and lower devices. ( aosp/1282118 )

Version 2.3.0-alpha01

March 4, 2020

androidx.lifecycle:lifecycle-*:2.3.0-alpha01 is released. Version 2.3.0-alpha01 contains these commits.

নতুন বৈশিষ্ট্য

• A new ViewTreeLifecycleOwner.get(View) API allows you to retrieve the containing LifecycleOwner given a View instance. You must upgrade to Activity 1.2.0-alpha01 and Fragment 1.3.0-alpha01 to populate this correctly. A findViewTreeLifecycleOwner Kotlin extension is available in lifecycle-runtime-ktx . ( aosp/1182361 , aosp/1182956 )
• Added a new Lint check that warns you when setting a null value on a MutableLiveData that has been defined in Kotlin as non-null. This is available when using the livedata-core-ktx or livedata-ktx artifacts. ( aosp/1154723 , aosp/1159092 )
• A new lifecycle-runtime-testing artifact is available that provides a TestLifecycleOwner that implements LifecycleOwner and provides a thread safe mutable Lifecycle . ( aosp/1242438 )

বাগ সংশোধন

• The lifecycle-runtime artifact now has a unique package name. ( aosp/1187196 )

সংস্করণ 2.2.0

ViewModel-Savedstate Version 2.2.0

৫ ফেব্রুয়ারী, ২০২০

androidx.lifecycle:lifecycle-viewmodel-savedstate:2.2.0 is released. Version 2.2.0 contains these commits .

Lifecycle ViewModel SavedState now shares the same version as other Lifecycle artifacts. The behavior of 2.2.0 is identical to the behavior of 1.0.0 .

সংস্করণ 2.2.0

২২ জানুয়ারী, ২০২০

androidx.lifecycle:lifecycle-*:2.2.0 is released. Version 2.2.0 contains these commits .

Important changes since 2.1.0

• Lifecycle Coroutine Integration : The new lifecycle-runtime-ktx artifact adds integration between Lifecycle and Kotlin coroutines. The lifecycle-livedata-ktx has also been expanded to take advantage of coroutines. See Use Kotlin coroutines with Architecture Components for more details.
• ViewModelProviders.of() deprecation : ViewModelProviders.of() has been deprecated. You can pass a Fragment or FragmentActivity to the new ViewModelProvider(ViewModelStoreOwner) constructor to achieve the same functionality when using Fragment 1.2.0 .
• lifecycle-extensions Artifact Deprecation : With the above deprecation of ViewModelProviders.of() , this release marks the deprecation of the last API in lifecycle-extensions and this artifact should now be considered deprecated in its entirety. We strongly recommend depending on the specific Lifecycle artifacts you need (such as lifecycle-service if you're using LifecycleService and lifecycle-process if you're using ProcessLifecycleOwner ) rather than lifecycle-extensions as there will not be a future 2.3.0 release of lifecycle-extensions .
• Gradle Incremental Annotation Processor : Lifecycle's annotation processor is incremental by default. If your app is written in the Java 8 programming language you can use DefautLifecycleObserver instead; and if it's written in the Java 7 programming language you can use LifecycleEventObserver .

Version 2.2.0-rc03

৪ ডিসেম্বর, ২০১৯

androidx.lifecycle:lifecycle-*:2.2.0-rc03 is released. Version 2.2.0-rc03 contains these commits .

বাগ সংশোধন

• Fixed a failure occurring when a mocked ViewModel was stored in ViewModelStore and queried later with default factory.
• Fix a usage of Dispatchers.Main.immediate in launchWhenCreated and similar methods to be called synchronously during corresponding lifecycle event. ( aosp/1156203 )

External contributions

• Thanks to Anders Järleberg for contributing the fix! ( aosp/1156203 )
• Thanks to Vsevolod Tolstopyatov from Jetbrains for reviewing an implementation of inlined execution.

Dependency changes

• Lifecycle Extensions now depends on Fragment 1.2.0-rc03 .

Version 2.2.0-rc02

৭ নভেম্বর, ২০১৯

androidx.lifecycle:lifecycle-*:2.2.0-rc02 is released. Version 2.2.0-rc02 contains these commits .

বাগ সংশোধন

• Fixed a bug in the proguard setup of the library that affected devices running API 28+ if the target API is below 29. ( b/142778206 )

Version 2.2.0-rc01

২৩ অক্টোবর, ২০১৯

androidx.lifecycle:lifecycle-*:2.2.0-rc01 is released. Version 2.2.0-rc01 contains these commits .

বাগ সংশোধন

• Fixed an issue where launchWhenCreated and related methods would run one frame later than the associated lifecycle method due to its use of Dispatchers.Main instead of Dispatchers.Main.immediate . ( aosp/1145596 )

External contributions

• Thanks to Nicklas Ansman for contributing the fix! ( aosp/1145596 )

Version 2.2.0-beta01

October 9, 2019

androidx.lifecycle:lifecycle-*:2.2.0-beta01 is released. Version 2.2.0-beta01 contains these commits .

বাগ সংশোধন

• Fixed a regression introduced in Lifecycle 2.2.0-alpha05 in the ordering of ProcessLifecycleOwner and the activity's LifecycleOwner moving to started and resumed on Android 10 devices. ( aosp/1128132 )
• Fixed a regression introduced in Lifecycle 2.2.0-alpha05 which would cause a NullPointerException when using version 2.0.0 or 2.1.0 of lifecycle-process . ( b/141536990 )

Version 2.2.0-alpha05

১৮ সেপ্টেম্বর, ২০১৯

androidx.lifecycle:lifecycle-*:2.2.0-alpha05 is released. Version 2.2.0-alpha05 contains these commits .

বাগ সংশোধন

• Fixed a race condition in coroutine livedata builder. b/140249349

Version 2.2.0-alpha04

৫ সেপ্টেম্বর, ২০১৯

androidx.lifecycle:lifecycle-*:2.2.0-alpha04 is released. The commits included in this version can be found here .

নতুন বৈশিষ্ট্য

• lifecycleScope , whenCreated , whenStarted , whenResumed , viewModelScope , and the underlying implementation of liveData now use Dispatchers.Main.immediate instead of Dispatchers.Main . ( b/139740492 )

External contributions

• Thanks to Nicklas Ansman for contributing the move to Dispatchers.Main.immediate ! ( aosp/1106073 )

Version 2.2.0-alpha03

৭ আগস্ট, ২০১৯

androidx.lifecycle:lifecycle-*:2.2.0-alpha03 is released. The commits included in this version can be found here .

নতুন বৈশিষ্ট্য

• Implementations of ViewModelStoreOwner can now optionally implement HasDefaultViewModelProviderFactory to provide a default ViewModelProvider.Factory . This has been done for Activity 1.1.0-alpha02 , Fragment 1.2.0-alpha02 , and Navigation 2.2.0-alpha01 . ( aosp/1092370 , b/135716331 )

API changes

• ViewModelProviders.of() has been deprecated. You can pass a Fragment or FragmentActivity to the new ViewModelProvider(ViewModelStoreOwner) constructor to achieve the same functionality. ( aosp/1009889 )

Version 2.2.0-alpha02

July 2, 2019

androidx.lifecycle:*:2.2.0-alpha02 is released. The commits included in this version can be found here .

API changes

• Replaced LiveDataScope.initialValue with LiveDataScope.latestValue which will track the current emitted value of the liveData block.
• Added a new overload to the liveData builder that receives timeout parameter as type Duration

Version 2.2.0-alpha01

৭ মে, ২০১৯

androidx.lifecycle:*:2.2.0-alpha01 is released. The commits included in this version can be found here .

নতুন বৈশিষ্ট্য

• This release adds new features that adds support for Kotlin coroutines for Lifecycle and LiveData. Detailed documentation on them can be found here .

ViewModel-SavedState Version 1.0.0

সংস্করণ 1.0.0

২২ জানুয়ারী, ২০২০

androidx.lifecycle:lifecycle-viewmodel-savedstate:1.0.0 is released. Version 1.0.0 contains these commits .

Important features in 1.0.0

• New SavedStateHandle class was added. It enables your ViewModel classes to access and to contribute to the saved state. This object can be received in constructor of ViewModel class and factories provided by default by Fragments and AppCompatActivity will inject SavedStateHandle automatically.
• AbstractSavedStateViewModelFactory was added. It allows you to create custom factories for your ViewModel and provide them access to SavedStateHandle .

ViewModel-Savedstate Version 1.0.0-rc03

৪ ডিসেম্বর, ২০১৯

androidx.lifecycle:lifecycle-viewmodel-savedstate:1.0.0-rc03 is released. Version 1.0.0-rc03 contains these commits .

Dependency changes

• Lifecycle ViewModel SavedState now depends on Lifecycle 2.2.0-rc03 .

Viewmodel-Savedstate Version 1.0.0-rc02

৭ নভেম্বর, ২০১৯

androidx.lifecycle:lifecycle-viewmodel-savedstate:1.0.0-rc02 is released. Version 1.0.0-rc02 contains these commits .

Dependency changes

• Now depends on lifecycle 2.2.0-rc02 .

ViewModel-SavedState Version 1.0.0-rc01

২৩ অক্টোবর, ২০১৯

androidx.lifecycle:lifecycle-viewmodel-savedstate:1.0.0-rc01 is released with no changes from 1.0.0-beta01 . Version 1.0.0-rc01 contains these commits .

ViewModel-Savedstate Version 1.0.0-beta01

October 9, 2019

androidx.lifecycle:lifecycle-viewmodel-savedstate:1.0.0-beta01 is released. Version 1.0.0-beta01 contains these commits .

বাগ সংশোধন

• Fixed an issue where accessing a SavedState ViewModel for the first time in Activity.onActivityResult() would result in an IllegalStateException . ( b/139093676 )
• Fixed an IllegalStateException when using AbstractSavedStateViewModelFactory . ( b/141225984 )

ViewModel-SavedState Version 1.0.0-alpha05

১৮ সেপ্টেম্বর, ২০১৯

androidx.lifecycle:lifecycle-viewmodel-savedstate:1.0.0-alpha05 is released. Version 1.0.0-alpha05 contains these commits .

API changes

• SavedStateViewModelFactory no longer extends AbstractSavedStateViewModelFactory and SavedStateHandle is created only for ViewModels that requested have it ( aosp/1113593 )

ViewModel-SavedState Version 1.0.0-alpha03

৭ আগস্ট, ২০১৯

androidx.lifecycle:lifecycle-viewmodel-savedstate:1.0.0-alpha03 is released. The commits included in this version can be found here .

Breaking Changes

• lifecycle-viewmodel-savedstate no longer depends on fragment and the related SavedStateViewModelFactory(Fragment) and SavedStateViewModelFactory(FragmentActivity) constructors have been removed. Instead, SavedStateViewModelFactory is now the default factory for Activity 1.1.0-alpha02 , Fragment 1.2.0-alpha02 , and Navigation 2.2.0-alpha01 . ( b/135716331 )

ViewModel-SavedState Version 1.0.0-alpha02

July 2, 2019

androidx.lifecycle:lifecycle-viewmodel-savedstate:1.0.0-alpha02 is released. The commits included in this version can be found here .

নতুন বৈশিষ্ট্য

• Added SavedStateHandle.getLiveData() overload which accepts a default value.

API Changes

• SavedStateVMFactory is renamed to SavedStateViewModelFactory .
• AbstractSavedStateVMFactory is renamed to AbstractSavedStateViewModelFactory .

ViewModel-Savedstate Version 1.0.0-alpha01

March 13, 2019

androidx.lifecycle:lifecycle-viewmodel-savedstate:1.0.0-alpha01 is released. The full commit log for this initial release can be found here .

নতুন বৈশিষ্ট্য

• Now ViewModels can contribute to savedstate. To do that you use newly introduced viewmodel's factory SavedStateVMFactory and your ViewModel should have a constructor that receives SavedStateHandle object as a parameter.

সংস্করণ 2.1.0

Important changes since 2.0.0

• Added LifecycleEventObserver for the cases when a stream of lifecycle events is needed. It is a public API instead of a hidden GenericLifecycleObserver class.
• Added ktx extensions for LiveData.observe methods and Transformations.* methods.
• Added Transformations.distinctUntilChanged , which creates a new LiveData object that does not emit a value until the source LiveData value has been changed.
• Added coroutine support in ViewModels by adding the extension property ViewModel.viewModelScope .

সংস্করণ 2.1.0

৫ সেপ্টেম্বর, ২০১৯

androidx.lifecycle:lifecycle-*:2.1.0 is released. The commits included in this version can be found here .

Version 2.1.0-rc01

July 2, 2019

androidx.lifecycle:*:2.1.0-rc01 is released with no changes from androidx.lifecycle:*:2.1.0-beta01 . The commits included in this version can be found here .

Version 2.1.0-beta01

৭ মে, ২০১৯

androidx.lifecycle:*:2.1.0-beta01 is released. The commits included in this version can be found here .

নতুন বৈশিষ্ট্য

• Lifecycles are graduated to beta: api introduced in previous alphas such as liveData extension functions for transformations and observations, ViewModel initialisation with property delegation and others are stabilised and not going to change.

Version 2.1.0-alpha04

April 3, 2019

androidx.lifecycle:*:2.1.0-alpha04 is released. The commits included in this version can be found here .

API changes

• Breaking change: the underlying API behind by viewModels() and by activityViewModels() has been changed to support a ViewModelStore directly, rather than only a ViewModelStoreOwner . ( aosp/932932 )

Version 2.1.0-alpha03

March 13, 2019

androidx.lifecycle:*:2.1.0-alpha03 is released. The full list of commits included in this version can be found here .

API changes

• ViewModelProvider.KeyedFactory was removed. Second interface in addition to ViewModelProvider.Factory didn't compose well with new features as property delegation in Kotlin by viewmodels {} . ( aosp/914133 )

Version 2.1.0-alpha02

January 30, 2019

androidx.lifecycle 2.1.0-alpha02 is released.

API changes

• LifecycleRegistry now contains a setCurrentState() method that replaces the now deprecated setState() method. ( aosp/880715 )

বাগ সংশোধন

• Fixed an issue where mock ViewModel instances would crash when the containing ViewModelStore was cleared. b/122273087

Version 2.1.0-alpha01

১৭ ডিসেম্বর, ২০১৮

androidx.lifecycle 2.1.0-alpha01 is released.

নতুন বৈশিষ্ট্য

• Added LifecycleEventObserver for the cases when a stream of lifecycle events is needed. It is a public api instead of a hidden GenericLifecycleObserver class.
• Added ktx extensions for LiveData.observe methods and Transformations.* methods.
• Method Transformations.distinctUntilChanged was added. It creates a new LiveData object that does not emit a value until the source LiveData value has been changed.
• Coroutine support in ViewModels: extension property ViewModel.viewModelScope was added.
• Added ViewModelProvider.KeyedFactory , a factory for ViewModels that receives key and Class in create method.

সংস্করণ 2.0.0

সংস্করণ 2.0.0

September 21, 2018

Lifecycle 2.0.0 is released with one bugfix from 2.0.0-rc01 in ViewModel.

Bug Fixes

• Fixed a ViewModel proguard rule that incorrectly removed constructors b/112230489

Version 2.0.0-beta01

July 2, 2018

Bug Fixes

• Fixed LifecycleObserver proguard rule to keep only implementations, not subinterfaces b/71389427
• Fixed ViewModel proguard rules to allow obfuscation and shrinking

Pre-AndroidX Versions

For the pre-AndroidX versions of Lifecycle that follow, include these dependencies:

dependencies {
    def lifecycle_version = "1.1.1"

    // ViewModel and LiveData
    implementation "android.arch.lifecycle:extensions:$lifecycle_version"
    // alternatively - just ViewModel
    implementation "android.arch.lifecycle:viewmodel:$lifecycle_version" // For Kotlin use viewmodel-ktx
    // alternatively - just LiveData
    implementation "android.arch.lifecycle:livedata:$lifecycle_version"
    // alternatively - Lifecycles only (no ViewModel or LiveData).
    //     Support library depends on this lightweight import
    implementation "android.arch.lifecycle:runtime:$lifecycle_version"

    annotationProcessor "android.arch.lifecycle:compiler:$lifecycle_version" // For Kotlin use kapt instead of annotationProcessor
    // alternately - if using Java8, use the following instead of compiler
    implementation "android.arch.lifecycle:common-java8:$lifecycle_version"

    // optional - ReactiveStreams support for LiveData
    implementation "android.arch.lifecycle:reactivestreams:$lifecycle_version"

    // optional - Test helpers for LiveData
    testImplementation "android.arch.core:core-testing:$lifecycle_version"
}

Version 1.1.1

March 21, 2018

Only one small change: android.arch.core.util.Function is moved from arch:runtime to arch:common . This allows it to be used without the runtime dependency, eg in paging:common below.

lifecycle:common is a dependency of lifecycle:runtime , so this change doesn't affect lifecycle:runtime directly, only modules that depend directly on lifecycle:common , as Paging does.

সংস্করণ 1.1.0

January 22, 2018

Packaging Changes

New, much smaller dependencies are now available:

• android.arch.lifecycle:livedata:1.1.0
• android.arch.lifecycle:viewmodel:1.1.0

API Changes

• The deprecated LifecycleActivity and LifecycleFragment have now been removed - please use FragmentActivity , AppCompatActivity or support Fragment .
• @NonNull annotations have been added to ViewModelProviders and ViewModelStores
• ViewModelProviders constructor has been deprecated - please use its static methods directly
• ViewModelProviders.DefaultFactory has been deprecated - please use ViewModelProvider.AndroidViewModelFactory
• The static ViewModelProvider.AndroidViewModelFactory.getInstance(Application) method has been added to retrieve a static Factory suitable for creating ViewModel and AndroidViewModel instances.

Lifecycle

This table lists all the artifacts in the androidx.lifecycle group.

Declaring dependencies

To add a dependency on Lifecycle, you must add the Google Maven repository to your project. Read Google's Maven repository for more information.

Add the dependencies for the artifacts you need in the build.gradle file for your app or module:

কোটলিন

    dependencies {
        def lifecycle_version = "2.9.4"
        def arch_version = "2.2.0"

        // ViewModel
        implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version"
        // ViewModel utilities for Compose
        implementation "androidx.lifecycle:lifecycle-viewmodel-compose:$lifecycle_version"
        // LiveData
        implementation "androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version"
        // Lifecycles only (without ViewModel or LiveData)
        implementation "androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version"
        // Lifecycle utilities for Compose
        implementation "androidx.lifecycle:lifecycle-runtime-compose:$lifecycle_version"

        // Saved state module for ViewModel
        implementation "androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version"

        // ViewModel integration with Navigation3
        implementation "androidx.lifecycle:lifecycle-viewmodel-navigation3:2.10.0-rc01"

        // Annotation processor
        kapt "androidx.lifecycle:lifecycle-compiler:$lifecycle_version"
        // alternately - if using Java8, use the following instead of lifecycle-compiler
        implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"

        // optional - helpers for implementing LifecycleOwner in a Service
        implementation "androidx.lifecycle:lifecycle-service:$lifecycle_version"

        // optional - ProcessLifecycleOwner provides a lifecycle for the whole application process
        implementation "androidx.lifecycle:lifecycle-process:$lifecycle_version"

        // optional - ReactiveStreams support for LiveData
        implementation "androidx.lifecycle:lifecycle-reactivestreams-ktx:$lifecycle_version"

        // optional - Test helpers for LiveData
        testImplementation "androidx.arch.core:core-testing:$arch_version"

        // optional - Test helpers for Lifecycle runtime
        testImplementation "androidx.lifecycle:lifecycle-runtime-testing:$lifecycle_version"
    }
    

    dependencies {
        val lifecycle_version = "2.9.4"
        val arch_version = "2.2.0"

        // ViewModel
        implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version")
        // ViewModel utilities for Compose
        implementation("androidx.lifecycle:lifecycle-viewmodel-compose:$lifecycle_version")
        // LiveData
        implementation("androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version")
        // Lifecycles only (without ViewModel or LiveData)
        implementation("androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version")
        // Lifecycle utilities for Compose
        implementation("androidx.lifecycle:lifecycle-runtime-compose:$lifecycle_version")

        // Saved state module for ViewModel
        implementation("androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version")

        // ViewModel integration with Navigation3
        implementation("androidx.lifecycle:lifecycle-viewmodel-navigation3:2.10.0-rc01")

        // Annotation processor
        kapt("androidx.lifecycle:lifecycle-compiler:$lifecycle_version")
        // alternately - if using Java8, use the following instead of lifecycle-compiler
        implementation("androidx.lifecycle:lifecycle-common-java8:$lifecycle_version")

        // optional - helpers for implementing LifecycleOwner in a Service
        implementation("androidx.lifecycle:lifecycle-service:$lifecycle_version")

        // optional - ProcessLifecycleOwner provides a lifecycle for the whole application process
        implementation("androidx.lifecycle:lifecycle-process:$lifecycle_version")

        // optional - ReactiveStreams support for LiveData
        implementation("androidx.lifecycle:lifecycle-reactivestreams-ktx:$lifecycle_version")

        // optional - Test helpers for LiveData
        testImplementation("androidx.arch.core:core-testing:$arch_version")

        // optional - Test helpers for Lifecycle runtime
        testImplementation ("androidx.lifecycle:lifecycle-runtime-testing:$lifecycle_version")
    }
    

জাভা

    dependencies {
        def lifecycle_version = "2.9.4"
        def arch_version = "2.2.0"

        // ViewModel
        implementation "androidx.lifecycle:lifecycle-viewmodel:$lifecycle_version"
        // LiveData
        implementation "androidx.lifecycle:lifecycle-livedata:$lifecycle_version"
        // Lifecycles only (without ViewModel or LiveData)
        implementation "androidx.lifecycle:lifecycle-runtime:$lifecycle_version"

        // Saved state module for ViewModel
        implementation "androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version"

        // Annotation processor
        annotationProcessor "androidx.lifecycle:lifecycle-compiler:$lifecycle_version"
        // alternately - if using Java8, use the following instead of lifecycle-compiler
        implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"

        // optional - helpers for implementing LifecycleOwner in a Service
        implementation "androidx.lifecycle:lifecycle-service:$lifecycle_version"

        // optional - ProcessLifecycleOwner provides a lifecycle for the whole application process
        implementation "androidx.lifecycle:lifecycle-process:$lifecycle_version"

        // optional - ReactiveStreams support for LiveData
        implementation "androidx.lifecycle:lifecycle-reactivestreams:$lifecycle_version"

        // optional - Test helpers for LiveData
        testImplementation "androidx.arch.core:core-testing:$arch_version"

        // optional - Test helpers for Lifecycle runtime
        testImplementation "androidx.lifecycle:lifecycle-runtime-testing:$lifecycle_version"
    }
    

    dependencies {
        val lifecycle_version = "2.9.4"
        val arch_version = "2.2.0"

        // ViewModel
        implementation("androidx.lifecycle:lifecycle-viewmodel:$lifecycle_version")
        // LiveData
        implementation("androidx.lifecycle:lifecycle-livedata:$lifecycle_version")
        // Lifecycles only (without ViewModel or LiveData)
        implementation("androidx.lifecycle:lifecycle-runtime:$lifecycle_version")

        // Saved state module for ViewModel
        implementation("androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version")

        // Annotation processor
        annotationProcessor("androidx.lifecycle:lifecycle-compiler:$lifecycle_version")
        // alternately - if using Java8, use the following instead of lifecycle-compiler
        implementation("androidx.lifecycle:lifecycle-common-java8:$lifecycle_version")

        // optional - helpers for implementing LifecycleOwner in a Service
        implementation("androidx.lifecycle:lifecycle-service:$lifecycle_version")

        // optional - ProcessLifecycleOwner provides a lifecycle for the whole application process
        implementation("androidx.lifecycle:lifecycle-process:$lifecycle_version")

        // optional - ReactiveStreams support for LiveData
        implementation("androidx.lifecycle:lifecycle-reactivestreams:$lifecycle_version")

        // optional - Test helpers for LiveData
        testImplementation("androidx.arch.core:core-testing:$arch_version")

        // optional - Test helpers for Lifecycle runtime
        testImplementation("androidx.lifecycle:lifecycle-runtime-testing:$lifecycle_version")
    }
    

For more information about dependencies, see Add Build Dependencies .

প্রতিক্রিয়া

Your feedback helps make Jetpack better. Let us know if you discover new issues or have ideas for improving this library. Please take a look at the existing issues in this library before you create a new one. You can add your vote to an existing issue by clicking the star button.

Create a new issue

See the Issue Tracker documentation for more information.

Version 2.10

Version 2.10.0-rc01

০৫ নভেম্বর, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-rc01 is released. Version 2.10.0-rc01 contains these commits .

Version 2.10.0-beta01

২২ অক্টোবর, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-beta01 is released. Version 2.10.0-beta01 contains these commits .

API Changes

• ViewModelStoreNavEntryDecoratorDefault has been renamed to ViewModelStoreNavEntryDecoratorDefaults , with an 's'. ( I6d27b , b/444447434 )

Bug Fixes

• rememberLifecycleOwner no longer crashes if the owner receives an Lifecycle.Event.ON_DESTROY event before moving to Lifeycle.State.CREATED . ( I6f98e , b/444594991 )

Version 2.10.0-alpha05

October 08, 2025

androidx.lifecycle:lifecycle-*:2.10.0-alpha05 is released. Version 2.10.0-alpha05 contains these commits .

API Changes

• The removeViewModelStoreOnPopCallback() is now part of a ViewModelStoreNavEntryDecoratorDefault object which is where other platforms and implementations can call the default. ( Ia1f23 , b/444447434 )
• Refactored ViewModelStoreNavEntryDecorator from a function to a class to better reflect its functionality as a factory for NavEntryDecorator , and renamed the decorator's shouldRemoveViewModelStore parameter to removeViewModelStoreOnPop to clarify that this callback is invoked only when an entry is popped from the backStack . ( Iefdc5 , b/444447434 )

Version 2.10.0-alpha04

২৪ সেপ্টেম্বর, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-alpha04 is released. Version 2.10.0-alpha04 contains these commits .

API Changes

• Refactor the LifecycleOwner composable to rememberLifecycleOwner . The function now returns the LifecycleOwner directly. To provide this owner to a sub-composition, use CompositionLocalProvider . ( Ic57f0 , b/444446629 )
• Add KMP stubs to lifecycle-viewmodel-navigation3 to enable JetBrains to provide forks that fill these targets and thus support CMP. ( I44a4c )

Version 2.10.0-alpha03

২৭ আগস্ট, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-alpha03 is released. Version 2.10.0-alpha03 contains these commits .

API Changes

• Update Compose to 1.9.0. ( I2b9de )

Version 2.10.0-alpha02

১৩ আগস্ট, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-alpha02 is released. Version 2.10.0-alpha02 contains these commits .

নতুন বৈশিষ্ট্য

• The LifecycleOwner composable can now create a standalone root lifecycle . By (explicitly) setting parent = null , the new lifecycle operates independently of any host (like an Activity , Fragment or NavBackStackEntry ). It starts as soon as the composable enters the composition and is automatically destroyed when it leaves. ( I8dfbe , b/433659048 )

  @Composable
  fun IndependentComponent() {
      // Create a standalone lifecycle, not tied to the parent Activity/Fragment.
      LifecycleOwner(parent = null) {
          val rootLifecycle = LocalLifecycleOwner.current.lifecycle
      }
  }
  

API Changes

• In the LifecycleOwner composable, the parentLifecycleOwner parameter has been renamed to parent . ( I080bc )

Bug Fixes

• LifecycleOwner composable now correctly moves its lifecycle to DESTROYED upon disposal. This prevents potential leaks for external code that holds a reference to the lifecycle. ( I9e5b7 , b/433659048 )
• Moving the default minSdk from API 21 to API 23 ( Ibdfca , b/380448311 , b/435705964 , b/435705223 )

External Contribution

• Remove unnecessary internal backing fields from LifecycleOwner . Thanks Jake Wharton for the contribution. ( Ideddb )

Version 2.10.0-alpha01

৩০ জুলাই, ২০২৫

androidx.lifecycle:lifecycle-*:2.10.0-alpha01 is released. Version 2.10.0-alpha01 contains these commits .

নতুন বৈশিষ্ট্য

• Add a LifecycleOwner composable to enable creating scoped lifecycles directly within the UI. This is useful for components that need to manage their own lifecycles independently. For an example of how Navigation3 integrates this new composable, see aosp/3708610 . ( 76cbf7 )

  @Composable
  fun MyComposable() {
      LifecycleOwner(
          maxLifecycle = RESUMED,
          parentLifecycleOwner = LocalLifecycleOwner.current,
      ) {
          val childLifecycleOwner = LocalLifecycleOwner.current
      }
  }
  

API Changes

• Add a builder factory function for CreationExtras , providing a more convenient and idiomatic Kotlin API. ( Iab2bd )
• Add native support for nullable types in SavedStateHandle.saved , simplifying saving and restoring nullable properties. ( I54d69 , b/421325690 )
• Mark SavedStateHandle constructors as @VisibleForTesting . ( Iff0e0 , b/408002794 )

Version 2.9

Version 2.9.4

১৭ সেপ্টেম্বর, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.4 is released. Version 2.9.4 contains these commits .

Bug Fixes

• Fixed an error with the Compose Compiler plugin not being applied that caused Lifecycle KMP artifacts to be broken. ( Ie95bc , b/443096483 , b/443965665 )

Version 2.9.3

২৭ আগস্ট, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.3 is released. Version 2.9.3 contains these commits .

নতুন বৈশিষ্ট্য

• Add new Kotlin Multiplatform (KMP) targets to Lifecycle *-compose artifacts. Lifecycle now supports the following platforms in total: JVM (Android and Desktop), Native (Linux, iOS, watchOS, macOS, MinGW), and Web (JavaScript, WasmJS). ( I0a0e4 )

Bug Fixes

• Update androidx.annotation to 1.9.1 ( Ic9e4f , b/397701294 )

Version 2.9.2

১৬ জুলাই, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.2 is released. Version 2.9.2 contains these commits .

Bug Fixes

• Added new Kotlin Multiplatform (KMP) targets to Lifecycle artifacts. Lifecycle now supports the following platforms in total: JVM (Android and Desktop), Native (Linux, iOS, watchOS, macOS, MinGW), and Web (JavaScript, WasmJS). Note that no new KMP targets have been added to the *-compose artifacts, as this depends on the stable release of Compose 1.9. ( I01cb8 ).

Dependency updates

• Lifecycle now depends on Annotation 1.9.1 to enable support for the new KMP targets ( Ic9e4f , b/397701294 ).

Version 2.9.1

৪ জুন, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.1 is released. Version 2.9.1 contains these commits .

Bug Fixes

• Fix SavedStateHandle.remove(key) not clearing SavedStateHandle.getMutableStateFlow(key) states. ( d5f939 , b/418746333 )

Version 2.9.0

May 7, 2025

androidx.lifecycle:lifecycle-*:2.9.0 is released. Version 2.9.0 contains these commits .

Important changes since 2.8.0

• A new androidx.lifecycle:lifecycle-viewmodel-testing KMP artifact is available that provides a ViewModelScenario class for testing ViewModels in isolation, with support for onCleared and SavedStateHandle as well as testing process death and recreation via recreate() .
• Add getMutableStateFlow to SavedStateHandle to return a MutableStateFlow . This new function is key-exclusive and cannot be used with getLiveData . An exception will be thrown if you try to use both to access the same state.
• CreationExtras now includes map-like operator overloads to enable idiomatic manipulation of content in Kotlin. It allows the use of in , += , and + with CreationExtras .

KotlinX Serialization Support

• With the support of KotlinX Serialization added in SavedState 1.3.0 , we have introduced saved , a lazy property delegate, to make it easy to store @Serializable classes in a SavedStateHandle and have those classes automatically be restored across process death and recreation. Please note the saved delegate is lazy and will not call the init lambda or save anything into the SavedStateHandle until it is accessed.

  @Serializable
  data class Person(val firstName: String, val lastName: String)
  
  class MyViewModel(handle: SavedStateHandle) : ViewModel() {
      var person by handle.saved { Person("John", "Doe") }
  
      fun onPersonChanged(person: Person) {
          this.person = person
      }
  }
  

Kotlin Multiplatform

• The lifecycle-testing module is now KMP compatible including APIs like TestLifecycleOwner .
• The lifecycle-viewmodel-savedstate module is now KMP compatible including APIs like SavedStateHandle .
• The androidx.compose.ui.platform.LocalLifecycleOwner is now available in the common source set.
• NewInstanceFactory is now available on JVM Desktop and Android targets.

আচরণগত পরিবর্তন

• The Lifecycle.DESTROYED state is terminal, and any attempt to move a Lifecycle from it to any other state will now result in an IllegalStateException .
• SavedStateHandle no longer includes any SavedStateProvider.saveState() where the returned Bundle is empty.

Version 2.9.0-rc01

২৩ এপ্রিল, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-rc01 is released. Version 2.9.0-rc01 contains these commits .

Lint API Compatibility Warning

• JetBrains changed KaCallableMemberCall from a class to an interface , which breaks binary compatibility. This can cause crashes if your project's AGP version differs from the version used to compile lint checks. This update was made in aosp/3577172 but was missing from the release notes — we're clarifying it here. Recommended fix: Update to the latest stable AGP. If you can't fully update, use android.experimental.lint.version to align lint checks with your AGP version — see Compose Runtime behavior changes for details.

Version 2.9.0-beta01

April 9, 2025

androidx.lifecycle:lifecycle-*:2.9.0-beta01 is released. Version 2.9.0-beta01 contains these commits .

API Changes

• Lifecycle ViewModel Compose now uses the same Kotlin Multiplatform setup as Compose Runtime 1.7.1 and higher - the -desktop artifacts are now removed and -jvmStubs and -linuxx64Stubs artifacts have been added. None of these targets are meant to be used, they are placeholders to help Jetbrains Compose efforts. ( I5cb14 , b/406592090 )

Dependency Updates

• This library now targets Kotlin 2.0 language level and requires KGP 2.0.0 or newer. ( Idb6b5 )
• Lifecycle ViewModel Compose now depends on Compose 1.7.8. ( I5cb14 , b/406592090 )

Version 2.9.0-alpha13

২৬ মার্চ, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-alpha13 is released with no notable public changes. Version 2.9.0-alpha13 contains these commits .

Version 2.9.0-alpha12

১২ মার্চ, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-alpha12 is released. Version 2.9.0-alpha12 contains these commits .

API Changes

• Add @MainThread annotation to ViewModelProvider.get in all supported KMP platforms. ( I7e8dd , b/397736115 )
• Rename SavedState*Delegates to SavedState*Delegate . ( I8589b , b/399629301 )

Version 2.9.0-alpha11

২৬ ফেব্রুয়ারী, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-alpha11 is released. Version 2.9.0-alpha11 contains these commits .

API Changes

• Add SavedStateConfig parameter to saved() delegates ( I39b3a )

Version 2.9.0-alpha10

১২ ফেব্রুয়ারী, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-alpha10 is released. Version 2.9.0-alpha10 contains these commits .

API Changes

• Move MutableStateSerializer to savedstate-compose from lifecycle-viewmodel-compose . ( I4f690 , b/378895074 )

External Contribution

• Adds a new Lint issue for calling Lifecycle::currentState in composition, instead suggesting using currentStateAsalue().value to ensure that changes in the Lifecycle state correctly cause recomposition. Thanks Steven Schoen! ( Iad484 )

Version 2.9.0-alpha09

২৯ জানুয়ারী, ২০২৫

androidx.lifecycle:lifecycle-*:2.9.0-alpha09 is released. Version 2.9.0-alpha09 contains these commits .

নতুন বৈশিষ্ট্য

• Add MutableStateSerializer for serializing androidx.compose.runtime.MutableState . ( Idfc48 , b/378895074 )

API Changes

• Replace overloaded SavedStateHandle.saved() delegate functions with default parameters ( Icd1c1 )
• AbstractSavedStateViewModelFactory is deprecated as it creates a SavedStateHandle for every ViewModel , causing unnecessary overhead. Use ViewModelProvider.Factory with CreationExtras.createSavedStateHandle instead for more efficient ViewModel creation. ( Ia920b , b/388590327 )

Version 2.9.0-alpha08

১১ ডিসেম্বর, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha08 is released. Version 2.9.0-alpha08 contains these commits .

নতুন বৈশিষ্ট্য

• Add ViewModelScenario.recreate to simulate a System Process Death recreating the ViewModel under test and all associated components. ( Id6a69 , b/381063087 )
• LifecycleOwner and ViewModelStoreOwner instances retrieved via their respective findViewTree APIs can now be resolved through disjoint parents of a view, such as a ViewOverlay . See the release notes of core or the documentation in ViewTree.setViewTreeDisjointParent for more information on disjoint view parents. ( I800f4 )

API Changes

• Make the namings and package organization more consistent with SavedStateRegistryOwnerDelegate ( I8c135 , b/376026744 )

Bug Fixes

• This library now uses JSpecify nullness annotations , which are type-use. Kotlin developers should use the following compiler argument to enforce correct usage: -Xjspecify-annotations=strict (this is the default starting with version 2.1.0 of the Kotlin compiler). ( Ie4340 , b/326456246 )
• Document ViewModel.onCleared clearing sequence. ( I586c7 , b/363984116 )

Version 2.9.0-alpha07

১৩ নভেম্বর, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha07 is released. Version 2.9.0-alpha07 contains these commits .

Kotlin Multiplatform Compatibility

• Lifecycle ViewModel SavedState is now KMP compatible. This allows you to use SavedStateHandle in common code. ( Ib6394 , b/334076622 )

KotlinX Serialization Support

• With the support of KotlinX Serialization added in SavedState 1.3.0-alpha05 , we have introduced saved , a lazy property delegate, to make it easy to store @Serializable classes in a SavedStateHandle and have those classes automatically be restored across process death and recreation. Please note the saved delegate is lazy and will not call the init lambda or save anything into the SavedStateHandle until it is accessed. ( I47a88 , b/376026744 )

  @Serializable
  data class Person(val firstName: String, val lastName: String)
  
  class MyViewModel(handle: SavedStateHandle) : ViewModel() {
      var person by handle.saved { Person("John", "Doe") }
  
      fun onPersonChanged(person: Person) {
          this.person = person
      }
  }
  

API Changes

• Add getMutableStateFlow to SavedStateHandle to return a MutableStateFlow . This new function is key-exclusive and cannot be used with getLiveData . An exception will be thrown if you try to use both to access the same state. ( I04a4f , b/375408415 )

Version 2.9.0-alpha06

৩০ অক্টোবর, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha06 is released. Version 2.9.0-alpha06 contains these commits .

আচরণগত পরিবর্তন

• The Lifecycle.DESTROYED state is terminal, and any attempt to move a Lifecycle from it to any other state will now result in an IllegalStateException . ( I116c4 , b/370577987 )
• SavedStateHandle no longer includes any SavedStateProvider.saveState() where the returned Bundle is empty. ( I910b5 , b/370577987 )

Bug Fixes

• Lifecycle.eventFlow now correctly complete when Lifecycle is DESTROYED ( I293b2 , b/374043130 )

Version 2.9.0-alpha05

October 16, 2024

androidx.lifecycle:lifecycle-*:2.9.0-alpha05 is released with no notable changes. Version 2.9.0-alpha05 contains these commits .

Version 2.9.0-alpha04

October 2, 2024

androidx.lifecycle:lifecycle-*:2.9.0-alpha04 is released. Version 2.9.0-alpha04 contains these commits .

Kotlin Multiplatform

• The lifecycle-viewmodel-savedstate module is now configured to be KMP compatible in preparation for APIs like SavedStateHandle being made available in the common source set in a future release. ( I503ed , I48764 , b/334076622 )

Version 2.9.0-alpha03

১৮ সেপ্টেম্বর, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha03 is released. Version 2.9.0-alpha03 contains these commits .

Bug Fixes

• From Lifecycle 2.8.6 : The NullSafeMutableLiveData Lint error has improved support for smart casts, avoiding false positives. ( 85fed6 , b/181042665 )

Dependency Updates

• From Lifecycle 2.8.6 : Lifecycle Runtime Compose now depends on Compose Runtime 1.7.1
• Lifecycle Runtime now depends on ProfileInstaller 1.4.0

Version 2.9.0-alpha02

৪ সেপ্টেম্বর, ২০২৪

androidx.lifecycle:lifecycle-*:2.9.0-alpha02 is released. Version 2.9.0-alpha02 contains these commits .

Bug Fixes

• From Lifecycle 2.8.5 : Update the androidx.lifecycle.ReportFragment ProGuard rules to allow obfuscation . ( ff898e1 )

External Contribution

• Move androidx.compose.ui.platform.LocalLifecycleOwner to common source set (KMP). Thanks Ivan Matkov from JetBrains for the contribution. ( 8cd5d03 )
• From Lifecycle 2.8.5 : SavedStateHandle.saveable` extension delegate now supports nullable values. Thanks Roman Kalukiewicz for the contribution. ( 0d78ea6 )

Version 2.9.0-alpha01

August 7, 2024

androidx.lifecycle:lifecycle-*:2.9.0-alpha01 is released. Version 2.9.0-alpha01 contains these commits .

Kotlin Multiplatform

• lifecycle-testing is now KMP compatible. ( Iea41e )
• Add support for linuxArm64 kotlin multiplatform target ( I139d3 , b/338268719 )

নতুন বৈশিষ্ট্য

• A new androidx.lifecycle:lifecycle-viewmodel-testing KMP artifact is available that provides a ViewModelScenario class for testing ViewModels in isolation, with support for onCleared (all platforms) and SavedStateHandle (Android only). ( 337f68d , c9b3409 , 9799a95c , b/264602919 )
• Creating a ViewModel with ViewModelProvider is now thread safe; @MainThread annotations have been removed. ( Ifd978 , b/237006831 )

API Changes

• Add the CreationExtras.Key() factory function to simplify the creation of anonymous CreationExtras.Key objects. ( I970ee )
• CreationExtras now includes map-like operator overloads to enable idiomatic manipulation of content in Kotlin. It allows the use of in , += , and + with CreationExtras . ( Ib4353 )
• CreationExtras now implements equals , hashCode , and toString methods. ( Ib4353 )
• NewInstanceFactory is now available on JVM Desktop and Android targets. ( d3d0892 )
• Inline extension property to expose underlying Application safely in Kotlin language version 2.0 ( I39df2 )

Bug Fixes

• Removed manual outlining of access to new platform APIs since this happens automatically via API modeling when using R8 with AGP 7.3 or later (eg R8 version 3.3) and for all builds when using AGP 8.1 or later (eg D8 version 8.1). Clients who are not using AGP are advised to update to D8 version 8.1 or later. See this article for more details. ( If6b4c , b/345472586 )

Version 2.8

Version 2.8.7

৩০ অক্টোবর, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.7 is released. Version 2.8.7 contains these commits .

API Changes

• androidx.compose.ui.platform.LocalLifecycleOwner is now available in the common source set (KMP). ( 6a3f5b3 )
• lifecycle-runtime-compose : desktop artifacts were removed and -jvmStubs and -linuxx64Stubs artifacts were added. None of these targets are meant to be used, they are placeholders to help Jetbrains Compose efforts. ( 6a3f5b3 )

Version 2.8.6

১৮ সেপ্টেম্বর, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.6 is released. Version 2.8.6 contains these commits .

Bug Fixes

• The NullSafeMutableLiveData Lint error has improved support for smart casts, avoiding false positives. ( 85fed6 , b/181042665 )

Dependency Updates

• Lifecycle Runtime Compose now depends on Compose Runtime 1.7.1

Version 2.8.5

৪ সেপ্টেম্বর, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.5 is released. Version 2.8.5 contains these commits .

Bug Fixes

• Update the androidx.lifecycle.ReportFragment ProGuard rules to allow obfuscation . ( ff898e1 )

External Contribution

• SavedStateHandle.saveable extension delegate now supports nullable values. Thanks Roman Kalukiewicz for the contribution. ( 0d78ea6 )

Version 2.8.4

July 24, 2024

androidx.lifecycle:lifecycle-*:2.8.4 is released. Version 2.8.4 contains these commits .

Bug Fixes

• LiveData.asFlow() now correctly handles cases where the returned Flow is immediately completed after receiving a value already set on the LiveData (for example, when using take(1) ). ( I9c566 )
• Lifecycle*Effect completion is now idempotent (ie, if the onStopOrDispose was called because of the Lifecycle being stopped, it won't be called a second time upon disposal unless the Lifecycle goes back up to STARTED again). ( I5f607 , b/352364595 )

Version 2.8.3

July 1, 2024

androidx.lifecycle:lifecycle-*:2.8.3 is released. Version 2.8.3 contains these commits .

Bug Fixes

• Fixed an issue with Lifecycle 2.8's backward compatibility with Compose 1.6.0 and lower when using code shrinking. ( aosp/3133056 , b/346808608 )

Version 2.8.2

১২ জুন, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.2 is released. Version 2.8.2 contains these commits .

Bug Fixes

• Fixed CompositionLocal LocalLifecycleOwner not present errors when using Lifecycle 2.8.X with Compose 1.6.X or earlier - you can now use Lifecycle 2.8.2 with any version of Compose without any workarounds required. ( aosp/3105647 , b/336842920 )
• ViewModelProvider will no longer crash when mixing previous versions of compileOnly Lifecycle dependencies with versions 2.8+, fixing issues with libraries such as LeakCanary. ( I80383 , b/341792251 )

Version 2.8.1

২৯ মে, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.1 is released. Version 2.8.1 contains these commits .

Bug Fixes

• lifecycle-viewmodel-compose now only has a common dependency on compose-runtime , removing its common dependency on compose-ui . The Android artifact retains its compose-ui for compatibility. ( aosp/3079334 , b/339562627 )
• ViewModel 's saveable integration using property delegates now uses the class name as part of the auto-generated key, avoiding conflicts if multiple classes use the same SavedStateHandle . ( aosp/3063463 )

Version 2.8.0

১৪ মে, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.0 is released. Version 2.8.0 contains these commits .

Important changes since 2.7.0

• LocalLifecycleOwner has been moved from Compose UI to lifecycle-runtime-compose so that its Compose-based helper APIs can be used outside of Compose UI.
• The lifecycle-runtime-compose artifact now contains the dropUnlessResumed and dropUnlessStarted APIs which allow you to drop click or other events that occur even after the LifecycleOwner has dropped below the given Lifecycle.State . For example, this can be used with Navigation Compose to avoid handling click events after a transition to another screen has already begun: onClick: () -> Unit = dropUnlessResumed { navController.navigate(NEW_SCREEN) }

• ViewModel.viewModelScope is now an overridable constructor parameter, allowing you to inject your own dispatcher and SupervisorJob() or to override the default by using the backgroundScope available within runTest . ( I2817c , b/264598574 )

  class MyViewModel(
    // Make Dispatchers.Main the default, rather than Dispatchers.Main.immediate
    viewModelScope: CoroutineScope = Dispatchers.Main + SupervisorJob()
  ) : ViewModel(viewModelScope) {
    // Use viewModelScope as before, without any code changes
  }
  
  // Allows overriding the viewModelScope in a test
  fun Test() = runTest {
    val viewModel = MyViewModel(backgroundScope)
  }
  

• ViewModel has been rewritten in Kotlin and now uses AutoClosable instead of Closeable . It now supports adding AutoCloseable objects with a key that allows retrieving them via getCloseable() .

• Calling LifecycleStartEffect and LifecycleResumeEffect without a key is now an error, following the same convention as the DisposableEffect API that these APIs mirror.

• Deprecated LiveDataReactiveStreams.toPublisher(lifecycleOwner, liveData) in favor of LiveData.toPublisher(lifecycleOwner) .

• The lifecycle-livedata-core-ktx kotlin extensions have now been moved to the lifecycle-livedata-core module.

• The NullSafeMutableLiveData has been refactored to avoid many false positives.

Lifecycle Kotlin Multiplatform Compatibility

The core Lifecycle APIs in Lifecycle , LifecycleOwner , LifecycleObserver , Lifecycle.State , Lifecycle.Event , and LifecycleRegistry are now shipped in artifacts compatible with Kotlin Multiplatform.

Artifacts impacted:

• lifecycle-common moves most APIs to common and supports jvm and iOS in addition to Android.
• lifecycle-runtime moves most APIs to common and supports jvm and iOS in addition to Android.
• lifecycle-runtime-ktx is now empty, with all APIs being moved into lifecycle-runtime .
• lifecycle-runtime-compose moves all APIs to common and ships an Android artifact, matching the multiplatform support of androidx.compose .

ViewModel Kotlin Multiplatform Compatibility

The lifecycle-viewmodel artifact and APIs like ViewModel , ViewModelStore , ViewModelStoreOwner , and ViewModelProvider are now shipped in artifacts compatible with Kotlin Multiplatform.

To accommodate this change, methods such as those on ViewModelProvider that took a java.lang.Class<T> now have an equivalent method that takes a kotlin.reflect.KClass<T> .

Binary compatibility on Android has been maintained, but there are a few notable changes when comparing the Android API surface to the common API surface:

• Constructing a ViewModelProvider instance is now done through the ViewModelProvider.create() methods rather than directly calling its constructor.
• ViewModelProvider.NewInstanceFactory and ViewModelProvider.AndroidViewModelFactory are only available on Android.
  • Custom Factories are recommended to extend from ViewModelProvider.Factory and use the create method that takes a CreationExtras or use the viewModelFactory Kotlin DSL.
• Using ViewModelProvider without a custom factory on non-JVM platforms will result in an UnsupportedOperationException . On JVM platforms, compatibility is preserved by using the no-args ViewModel constructor if a custom factory is not provided.
• viewModelScope will fallback to an EmptyCoroutineContext in platforms where Dispatchers.Main is not available (eg, Linux).

Artifacts impacted:

• lifecycle-viewmodel moves most APIs to common and supports jvm and iOS in addition to Android.
• lifecycle-viewmodel-ktx is now empty, with all APIs being moved into lifecycle-viewmodel .
• lifecycle-viewmodel-compose moves all APIs to common and ships an Android artifact, matching the multiplatform support of androidx.compose .

আচরণগত পরিবর্তন

• InitializerViewModelFactory (including viewModelFactory builder function) will now throw an IllegalArgumentException if a initializer with the same clazz: KClass<VM : ViewModel> has already been added. ( Ic3a36 )

জ্ঞাত সমস্যা

• lifecycle-*:2.8.0 requires a minimum Compose version of 1.7.0-alpha05 ( b/336842920 ).

Version 2.8.0-rc01

১ মে, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.0-rc01 is released. Version 2.8.0-rc01 contains these commits .

Bug Fixes

• Fixed an issue where the Baseline Profile for lifecycle-common classes was not properly packaged. These are now packaged in the lifecycle-runtime AAR. ( aosp/3038274 , b/322382422 )
• Fixed an unintentional ordering change in how AutoCloseable instances attached to a ViewModel are cleared - the previous order of addCloseable(String, AutoCloseable) , then addClosable(AutoCloseable) , then onCleared() has been restored. ( aosp/3041632 )
• Improve the default creation behavior for viewModelScope for native and JVM Desktop environments. ( aosp/3039221 )

External Contribution

• Thanks Victor Kropp for improving the checking for the main thread on JVM Desktop. ( aosp/3037116 )

Version 2.8.0-beta01

১৭ এপ্রিল, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.0-beta01 is released. Version 2.8.0-beta01 contains these commits .

নতুন বৈশিষ্ট্য

• The lifecycle-runtime-compose artifact is now compatible with Kotlin Multiplatform, moving its code to common and ships an Android artifact, matching the multiplatform support for androidx.compose . ( If7a71 , I4f4a0 , b/331769623 )

Version 2.8.0-alpha04

April 3, 2024

androidx.lifecycle:lifecycle-*:2.8.0-alpha04 is released. Version 2.8.0-alpha04 contains these commits .

নতুন বৈশিষ্ট্য

• The lifecycle-viewmodel-compose artifact is now compatible with Kotlin Multiplatform, moving its code to common and ships an Android artifact, matching the multiplatform support of androidx.compose . The accommodate this change, the Composable viewModel method now accepts a KClass in addition to a java.lang.Class . ( b/330323282 )

Bug Fixes

• The NullSafeMutableLiveData has been refactored to avoid many false positives. ( I2d8c1 , Iafb18 , I03463 , I7ecef )

Dependency update

• The lifecycle-viewmodel-compose artifact now depends on Compose 1.6.0.
• Lifecycle now depends on Profile Installer 1.3.1 .

Version 2.8.0-alpha03

২০ মার্চ, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.0-alpha03 is released. Version 2.8.0-alpha03 contains these commits .

নতুন বৈশিষ্ট্য

• ViewModel.viewModelScope is now an overridable constructor parameter, allowing you to inject your own dispatcher and SupervisorJob() or to override the default by using the backgroundScope available within runTest . ( I2817c , b/264598574 )

  class MyViewModel(
    // Make Dispatchers.Main the default, rather than Dispatchers.Main.immediate
    viewModelScope: CoroutineScope = Dispatchers.Main + SupervisorJob()
  ) : ViewModel(viewModelScope) {
    // Use viewModelScope as before, without any code changes
  }
  
  // Allows overriding the viewModelScope in a test
  fun Test() = runTest {
    val viewModel = MyViewModel(backgroundScope)
  }
  

Kotlin Multiplatform Compatibility

The lifecycle-viewmodel artifact and APIs like ViewModel , ViewModelStore , ViewModelStoreOwner , and ViewModelProvider are now shipped in artifacts compatible with Kotlin Multiplatform. ( b/214568825 )

To accommodate this change, methods such as those on ViewModelProvider that took a java.lang.Class<T> now have an equivalent method that takes a kotlin.reflect.KClass<T> .

Binary compatibility on Android has been maintained, but there are a few notable changes when comparing the Android API surface to the common API surface:

• Constructing a ViewModelProvider instance is now done through the ViewModelProvider.create() methods rather than directly calling its constructor.
• ViewModelProvider.NewInstanceFactory and ViewModelProvider.AndroidViewModelFactory are only available on Android.
  • Custom Factories are recommended to extend from ViewModelProvider.Factory and use the create method that takes a CreationExtras or use the viewModelFactory Kotlin DSL.
• Using ViewModelProvider without a custom factory on non-JVM platforms will result in an UnsupportedOperationException . On JVM platforms, compatibility is preserved by using the no-args ViewModel constructor if a custom factory is not provided.
• viewModelScope will fallback to an EmptyCoroutineContext in platforms where Dispatchers.Main is not available (eg, Linux).

আচরণগত পরিবর্তন

• InitializerViewModelFactory (including viewModelFactory builder function) will now throw an IllegalArgumentException if a initializer with the same clazz: KClass<VM : ViewModel> has already been added. ( Ic3a36 )

Bug Fixes

• ViewModel.getCloseable now handles duplicated keys: if the key already has an AutoCloseable resource associated with it, the old resource will be replaced and closed immediately. ( Ibeb67 )
• Accessing the viewModelScope of a ViewModel is now thread safe. ( If4766 , b/322407038 )

External Contribution

• LocalLifecycleOwner moved from Compose UI to lifecycle-runtime-compose so that its Compose-based helper APIs can be used outside of Compose UI. Thanks Jake Wharton for the contribution. ( I6c41b , b/328263448 )

Version 2.8.0-alpha02

২১ ফেব্রুয়ারী, ২০২৪

androidx.lifecycle:lifecycle-*:2.8.0-alpha02 is released. Version 2.8.0-alpha02 contains these commits.

নতুন বৈশিষ্ট্য

• The dropUnlessResumed and dropUnlessStarted APIs have been added which allow you to drop click or other events that occur even after the LifecycleOwner has dropped below the given Lifecycle.State . For example, this can be used with Navigation Compose to avoid handling click events after a transition to another screen has already begun: onClick: () -> Unit = dropUnlessResumed { navController.navigate(NEW_SCREEN) } ( Icba83 , b/317230685 )

Kotlin Conversions

• ViewModel is now written in Kotlin ( I16f26 , b/214568825 )
• The lifecycle-viewmodel-ktx kotlin extensions have now been moved to the base lifecycle module. ( Id787b , b/274800183 )
• The lifecycle-runtime-ktx kotlin extensions have now been moved to the base lifecycle module. ( Ic3686 , b/274800183 )
• The lifecycle-livedata-core-ktx kotlin extensions have now been moved to the base lifecycle module. ( I54a3d , b/274800183 )

Kotlin Multiplatform Compatibility

• The core Lifecycle APIs in Lifecycle , LifecycleOwner , LifecycleObserver , Lifecycle.State , Lifecycle.Event , and LifecycleRegistry are now shipped in artifacts compatible with Kotlin Multiplatform. ( b/317249252 )

API Changes

• Calling LifecycleStartEffect and LifecycleResumeEffect without a key is now an error, following the same convention as the DisposableEffect API that these APIs mirror. ( Ib0e0c , b/323518079 )
• ViewModel now uses AutoCloseable instead of Closeable . That is a backward compatible change. ( I27f8e , b/214568825 )
• Deprecated LiveDataReactiveStreams.toPublisher(lifecycleOwner, liveData) in favor of LiveData.toPublisher(lifecycleOwner) . ( Iabe29 , b/262623005 )

External Contribution

• Thanks Ivan Matkov from Jetbrains for helping move Lifecycle to Kotlin Multiplatform. ( aosp/2926690 , I0c5ac , If445d )

Version 2.8.0-alpha01

January 24, 2024

androidx.lifecycle:lifecycle-*:2.8.0-alpha01 is released. Version 2.8.0-alpha01 contains these commits.

নতুন বৈশিষ্ট্য

• ViewModel now supports adding Closeable objects with a key that allows retrieving them via getCloseable() . ( I3cf63 )

Version 2.7

সংস্করণ 2.7.0

January 10, 2024

androidx.lifecycle:lifecycle-*:2.7.0 is released. Version 2.7.0 contains these commits.

Important changes since 2.6.0

• TestLifecycleOwner now includes a suspending function setCurrentState() which ensures that the state change and all LifecycleObserver callbacks are completed before returning. Notably, unlike setting the currentState property directly, this does not use runBlocking , making it safe to use within a coroutine such as one provided by runTest .
• The LiveData extensions of map and switchMap now mirror the behavior of distinctUntilChanged - if the LiveData has a value set, the map / switchMap function will be immediately called to populate the value of the returned LiveData . This ensures that the initial value will be set as part of the first composition (when used with observeAsState() ), but does not change the observation behavior - updates values from the source LiveData will still only apply once you start observing the LiveData .
• This release fixes an issue where SavedStateHandle would not properly restore custom Parcelable classes after process death and recreation. Due to type information that is lost by the Android framework, arrays of custom Parcelables require additional work (manually creating a typed array of the right type) and the documentation on get , getLiveData , and getStateFlow now specifically calls this limitation out.
• The proguard keep rules associated with LifecycleObserver have been removed. This means that proguarded code that wishes to use APIs via reflection (such as using the long since deprecated @OnLifecycleEvent annotation) will need to provide their own keep rules for their specific use case.

Lifecycle Event Observability

• As an alternative to using a LifecycleEventObserver , you can now observe a Flow of Lifecycle.Event via the Lifecycle.asFlow() extension method.
• Jetpack Compose users can now use LifecycleEventEffect to run Compose side effects based on Lifecycle.Event .

@Composable
fun HomeScreen(viewModel: HomeViewModel = viewModel()) {
  LifecycleEventEffect(Lifecycle.Event.ON_RESUME) {
    viewModel.refreshData()
  }
  // …
}

• Jetpack Compose users can use LifecycleStartEffect and LifecycleResumeEffect to handle pairs of events - started to stopped and resumed to paused, respectively. This API mirrors the one found in DisposableEffect and is suitable for cases where the change being made when the state is going up needs to be reversed when going back down.

fun HomeScreen(viewModel: HomeViewModel = viewModel()) {
  LifecycleStartEffect(viewModel) {
    val timeTracking = viewModel.startTrackingTimeOnScreen()
    onStopOrDispose {
      timeTracking.stopTrackingTimeOnScreen()
    }
  }
  // …
}

See Run code on lifecycle events for more information.

Lifecycle State Observability

• The current Lifecycle.State can now be observed via the Lifecycle.currentStateFlow property, which returns a StateFlow where the value is the current Lifecycle.State .
• Jetpack Compose users can use the Lifecycle.currentStateAsState() extension to directly expose Lifecycle.State as Compose State . This is equivalent (and a shorter alternative) to lifecycle.currentStateFlow.collectAsState() .

See Collect lifecycle state with flows for more information.

Version 2.7.0-rc02

১৩ ডিসেম্বর, ২০২৩

androidx.lifecycle:lifecycle-*:2.7.0-rc02 is released. Version 2.7.0-rc02 contains these commits.

Bug Fixes

• Fixed an issue where SavedStateHandle would not properly restore custom Parcelable classes after process death and recreation. Due to type information that is lost by the Android framework, arrays of custom Parcelables require additional work (manually creating a typed array of the right type) and the documentation on get , getLiveData , and getStateFlow now specifically calls this limitation out. ( I0b55a )

Version 2.7.0-rc01

১৫ নভেম্বর, ২০২৩

androidx.lifecycle:lifecycle-*:2.7.0-rc01 is released. Version 2.7.0-rc01 contains these commits.

Bug Fixes

• LifecycleStartEffect and LifecycleResumeEffect now correctly dispose and recreate the effect block if the LifecycleOwner is changed. ( Ia25c6 )

Version 2.7.0-beta01

১ নভেম্বর, ২০২৩

androidx.lifecycle:lifecycle-*:2.7.0-beta01 is released with no changes. Version 2.7.0-beta01 contains these commits.

• A beta version bump, no major changes to this release version.

Version 2.7.0-alpha03

October 18, 2023

androidx.lifecycle:lifecycle-*:2.7.0-alpha03 is released. Version 2.7.0-alpha03 contains these commits.

নতুন বৈশিষ্ট্য

• lifecycle-runtime-testing now contains a new Lint check to avoid setting the Lifecycle.State of the TestLifecycleOwner by using the currentState field when inside of a coroutine. The Lint check now suggests the suspending setCurrentState which allows setting the Lifecycle.State without blocking. ( Icf728 , b/297880630 )

Bug Fixes

• Fixed an issue with LiveData.switchMap where returning the same LiveData instance both on the initial call and a subsequent call would prevent the LiveData instance from being added as a source. ( Ibedcba7 )

Version 2.7.0-alpha02

৬ সেপ্টেম্বর, ২০২৩

androidx.lifecycle:lifecycle-*:2.7.0-alpha02 is released. Version 2.7.0-alpha02 contains these commits.

নতুন বৈশিষ্ট্য

• TestLifecycleOwner now includes the suspending function setCurrentState() to give users the option of using TestLifecycleOwner from within a coroutine such as one provided by runTest . ( I329de , b/259344129 )

API Changes

• All files from the lifecycle-livedata-ktx modules have been moved into the main lifecycle-livedata module. ( I10c6f , b/274800183 )

আচরণগত পরিবর্তন

• The LiveData.map() and LiveData.switchMap() extensions now sets the value of the returned LiveData if the previous LiveData has had a value set on it, ensuring that using the resulting LiveData in Jetpack Compose has the right state on the initial composition. ( I91d2b , b/269479952 )
• ViewModel 's addCloseable() now immediately closes the Closeable if the ViewModel has already received a call to onCleared() . ( I4712e , b/280294730 )

Bug Fixes

• From Lifecycle 2.6.2 : Fixed an issue where SavedStateHandle would not correctly be restored after process death if the state was restored, save() was called without actually saving the state in the parent SavedStateRegistry , and then the state was restored again. This fixes the interaction between rememberSaveable and Navigation Compose's NavHost . ( aosp/2729289 )

Version 2.7.0-alpha01

July 26, 2023

androidx.lifecycle:lifecycle-*:2.7.0-alpha01 is released. Version 2.7.0-alpha01 contains these commits.

API Changes

• Lifecycle.State is now Compose-observable via Lifecycle.currentStateFlow , which returns a StateFlow where the value is the current Lifecycle.State . ( Ib212d , b/209684871 )
• Lifecycle.Event s can now able to be observed as a Flow with Lifecycle.asFlow(). ( If2c0f , b/176311030 )
• LifecycleResumeEffect API has been added to run Compose SideEffect s based on both Lifecycle.Event.ON_RESUME and Lifecycle.Event.ON_PAUSE event callbacks. ( I60386 , b/235529345 )
• LifecycleStartEffect API has been added to run Compose SideEffect s based on Lifecycle.Event.ON_START and Lifecycle.Event.ON_STOP event callbacks. ( I5a8d1 , b/235529345 )
• LifecycleEventEffect API has been added to run Compose SideEffect s based on Lifecycle.Event . ( Ic9794 , b/235529345 )
• Lifecycle.collectAsState() extension has been added to directly expose Lifecycle.State as Compose State . This is equivalent (and a shorter alternative) to lifecycle.currentStateFlow.collectAsState() . ( I11015 , b/235529345 )

Bug Fixes

• The LiveData.distinctUntilChanged() extension now sets the value of the returned LiveData if the previous LiveData has had a value set on it. This does not change the observation behavior - updated values from the source LiveData will still only apply once you start observing the LiveData returned from distinctUntilChanged() . ( Ib482f )
• The proguard keep rules associated with LifecycleObserver have been removed. This means that proguarded code that wishes to use APIs via reflection will need to provide their own keep rules for their specific use case. ( Ia12fd )

Version 2.6

Version 2.6.2

৬ সেপ্টেম্বর, ২০২৩

androidx.lifecycle:lifecycle-*:2.6.2 is released. Version 2.6.2 contains these commits.

Bug Fixes

• Fixed an issue where SavedStateHandle would not correctly be restored after process death if the state was restored, save() was called without actually saving the state in the parent SavedStateRegistry , and then the state was restored again. This fixes the interaction between rememberSaveable and Navigation Compose's NavHost . ( aosp/2729289 )

Version 2.6.1

২২ মার্চ, ২০২৩

androidx.lifecycle:lifecycle-*:2.6.1 is released. Version 2.6.1 contains these commits.

Dependency Updates

• lifecycle-viewmodel-savedstate now depends on SavedState 1.2.1 . ( cd7251 )
• Lifecycle now depends on ProfileInstaller 1.3.0 . ( f9d30b )

সংস্করণ 2.6.0

৮ মার্চ, ২০২৩

androidx.lifecycle:lifecycle-*:2.6.0 is released. Version 2.6.0 contains these commits.

Important changes since 2.5.0

• LiveData now includes a new isInitialized property that indicates whether an explicit value has ever been set on the LiveData , allowing you to distinguish between liveData.value returning null because no value has ever been set or an explicit null value.
• MediatorLiveData now includes a constructor to set an initial value.
• Added a new extension on StateFlow and Flow of collectAsStateWithLifecycle() that collect from flows and represents its latest value as Compose State in a lifecycle-aware manner.
• Lifecycle.launchWhenX methods and Lifecycle.whenX methods have been deprecated as the use of a pausing dispatcher can lead to wasted resources in some cases. It is recommended to use Lifecycle.repeatOnLifecycle . For more information about one-time suspending work, please see this explanation on why this is inherently unsafe.
• Kotlin Conversion - A large number of Lifecycle classes have been converted to Kotlin. All converted classes still retain their binary compatibility with previous versions. The following classes have source incompatible changes for classes written in Kotlin: ViewTreeLifecycleOwner , LiveDataReactiveStreams , HasDefaultViewModelProviderFactory , ViewTreeViewModelStoreOwner , Transformations , ViewModelStoreOwner , LifecycleOwner

The table below provides the source conversions for the new version of lifecycle.

• The nullability of the onChanged method of a Observer created in Kotlin now matches the nullability of the generic type. If you want Observer.onChanged() to accept a nullable type, you must instantiate the Observer with a nullable type.
• These classes were also converted to Kotlin, but remain source compatible: DefaultLifecycleObserver , LifecycleEventObserver , Lifecycle , LifecycleRegistry , LifecycleObserver , ViewModelStore , AndroidViewModel , AbstractSavedStateViewModelFactory , LifecycleService , ServiceLifecycleDispatcher , and ProcessLifecycleOwner

Version 2.6.0-rc01

February 22, 2023

androidx.lifecycle:lifecycle-*:2.6.0-rc01 is released. Version 2.6.0-rc01 contains these commits.

Bug Fixes

• The LiveData.distinctUntilChanged() extension now sets the value of the returned LiveData if the previous LiveData has had a value set on it. This does not change the observation behavior - updated values from the source LiveData will still only apply once you start observing the LiveData returned from distinctUntilChanged() . ( Ib482f )

Version 2.6.0-beta01

৮ ফেব্রুয়ারী, ২০২৩

androidx.lifecycle:lifecycle-*:2.6.0-beta01 is released. Version 2.6.0-beta01 contains these commits.

Kotlin Conversions

• LifecycleOwner is now written in Kotlin. This is a source incompatible change for classes written in Kotlin - they must now override the lifecycle property rather than implementing the previous getLifecycle() function. ( I75b4b , b/240298691 )
• ViewModelStoreOwner is now in Kotlin. This is a source incompatible change for classes written in Kotlin - they must now override the viewModelStore property rather than implementing the previous getViewModelStore() function. ( I86409 , b/240298691 )
• The Kotlin extension on LifecycleOwner that provides the lifecycleScope field has been moved to the lifecycle-common artifact from lifecycle-runtime-ktx . ( I41d78 , b/240298691 )
• The Kotlin extension on Lifecycle that provides the coroutineScope field has been moved to the lifecycle-common artifact from lifecycle-runtime-ktx . ( Iabb91 , b/240298691 )

Version 2.6.0-alpha05

২৫ জানুয়ারী, ২০২৩

androidx.lifecycle:lifecycle-*:2.6.0-alpha05 is released. Version 2.6.0-alpha05 contains these commits.

Kotlin Conversions

• Transformations is now written in Kotlin. This is a source incompatible change for those classes written in Kotlin that were directly using syntax such as Transformations.map - Kotlin code must now use the Kotlin extension method syntax that was previously only available when using lifecycle-livedata-ktx . When using the Java programming language, the versions of these methods that take an androidx.arch.core.util.Function method are deprecated and replaced with the versions that take a Kotlin Function1 . This change maintains binary compatibility. ( I8e14f )
• ViewTreeViewModelStoreOwner is now written in Kotlin. This is a source incompatible change for those classes written in Kotlin - you must now directly import and use the Kotlin extension methods on View of androidx.lifecycle.setViewTreeViewModelStoreOwner and androidx.lifecycle.findViewTreeViewModelStoreOwner to set and find a previously set owner. This is binary compatible and remains source compatible for implementations written in the Java programming language. ( Ia06d8 , Ib22d8 , b/240298691 )
• The HasDefaultViewModelProviderFactory interface is now written in Kotlin. This is a source incompatible change for classes written in Kotlin - they must now override the defaultViewModelProviderFactory and defaultViewModelCreationExtras properties rather than implementing the previous corresponding functions. ( Iaed9c , b/240298691 )
• Observer is now written in Kotlin. Its onChanged() method now uses the name value for its parameter. ( Iffef2 , I4995e , b/240298691 )
• AndroidViewModel , AbstractSavedStateViewModelFactory , LifecycleService , ServiceLifecycleDispatcher , and ProcessLifecycleOwner are now written in Kotlin ( I2e771 , Ibae40 , I160d7 , I08884 , I1cda7 , b/240298691 )

Version 2.6.0-alpha04

১১ জানুয়ারী, ২০২৩

androidx.lifecycle:lifecycle-*:2.6.0-alpha04 is released. Version 2.6.0-alpha04 contains these commits.

নতুন বৈশিষ্ট্য

• LiveData now includes a new isInitialized property that indicates whether an explicit value has ever been set on the LiveData , allowing you to distinguish between liveData.value returning null because no value has ever been set or an explicit null value. ( Ibd018 )

API Changes

• The collectAsStateWithLifecycle() APIs of lifecycle-runtime-compose are no longer in experimental status. ( I09d42 , b/258835424 )
• Lifecycle.launchWhenX methods and Lifecycle.whenX methods have been deprecated as the use of a pausing dispatcher can lead to wasted resources in some cases. It is recommended to use Lifecycle.repeatOnLifecycle . ( Iafc54 , b/248302832 )

Kotlin Conversions

• ViewTreeLifecycleOwner is now written in Kotlin. This is a source incompatible change for those classes written in Kotlin - you must now directly import and use the Kotlin extension methods on View of androidx.lifecycle.setViewTreeLifecycleOwner and androidx.lifecycle.findViewTreeLifecycleOwner to set and find a previously set owner. This replaces the previous Kotlin extension in lifecycle-runtime-ktx . This is binary compatible and remains source compatible for implementations written in the Java programming language. ( I8a77a , I5234e , b/240298691 )
• LiveDataReactiveStreams is now written in Kotlin. The Kotlin extensions previously in lifecycle-reactivestreams-ktx have been moved into the lifecycle-reactivestreams module and have become the primary surface for code written in Kotlin. This is a source incompatible change for code written in Kotlin if you were not already using the Kotlin extension method APIs. ( I2b1b9 , I95d22 , b/240298691 )
• DefaultLifecycleObserver , LifecycleEventObserver , Lifecycle , LifecycleRegistry , LifecycleObserver , and ViewModelStore are now written in Kotlin ( Iadffd , ( I60034 , I8c52c , I9593d , I01fe1 , I59a23 , b/240298691 )

Bug Fixes

• SavedStateHandle no longer crashes with a ClassCastException when calling get() with the incorrect class type. ( I6ae7c )

Version 2.6.0-alpha03

October 24, 2022

androidx.lifecycle:lifecycle-*:2.6.0-alpha03 is released. Version 2.6.0-alpha03 contains these commits.

Bug Fixes

• Fixed an issue with constraints between different Lifecycle modules not working as intended. ( I18d0d , b/249686765 )
• Errors thrown by LifecycleRegistry.moveToState() now include a more helpful error messaging that informs developers of the component causing the error. ( Idf4b2 , b/244910446 )

Version 2.6.0-alpha02

৭ সেপ্টেম্বর, ২০২২

androidx.lifecycle:lifecycle-*:2.6.0-alpha02 is released. Version 2.6.0-alpha02 contains these commits.

API Changes

• MediatorLiveData now includes a constructor to set an initial value. ( Ib6cc5 , b/151244085 )

Bug Fixes

• Lifecycle artifacts now include constraints that ensure that all inter-dependent Lifecycle artifacts use the same version, automatically upgrading other dependencies when one is upgraded. b/242871265
• FlowLiveData.asFlow() now creates a callbackFlow rather than using its own Channel implementation to ensure thread-safety and context preservation. ( I4a8b2 , b/200596935 )
• FlowLiveData 's asLiveData function will now preserve the initial value of a StateFlow when creating the new LiveData object. ( I3f530 , b/157380488 )
• From Lifecycle 2.5.1 : Custom implementations of AndroidViewModelFactory now correctly calls the create(modelClass) function when using the stateful constructor with Lifecycle 2.4+ ( I5b315 , b/238011621 )

Version 2.6.0-alpha01

২৯ জুন, ২০২২

androidx.lifecycle:lifecycle-*:2.6.0-alpha01 is released. Version 2.6.0-alpha01 contains these commits.

নতুন বৈশিষ্ট্য

• Added a new extension on StateFlow and Flow of collectAsStateWithLifecycle that collect from flows and represents its latest value as Compose State in a lifecycle-aware manner. The flow is collected and the new emission is set to the State's value when the lifecycle is at least in a certain Lifecycle.State . When the lifecycle falls below that Lifecycle.State , the flow collection stops and the State's value is not updated. ( I1856e , b/230557927 )

Version 2.5

Version 2.5.1

২৭ জুলাই, ২০২২

androidx.lifecycle:lifecycle-*:2.5.1 is released. Version 2.5.1 contains these commits.

Bug Fixes

• Custom implementations of AndroidViewModelFactory now correctly call the create(modelClass) function when using the stateful AndroidViewModelFactory constructor with Lifecycle 2.4+. ( I5b315 , b/238011621 )

সংস্করণ 2.5.0

২৯ জুন, ২০২২

androidx.lifecycle:lifecycle-*:2.5.0 is released. Version 2.5.0 contains these commits.