Navigation

Declaring dependencies

To add a dependency on Navigation, 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:

plugins {
  // Kotlin serialization plugin for type safe routes and navigation arguments
  id 'org.jetbrains.kotlin.plugin.serialization' version '2.0.21'
}
  
dependencies {
  def nav_version = "2.8.5"

  // Jetpack Compose Integration
  implementation "androidx.navigation:navigation-compose:$nav_version"

  // Views/Fragments Integration
  implementation "androidx.navigation:navigation-fragment:$nav_version"
  implementation "androidx.navigation:navigation-ui:$nav_version"

  // Feature module support for Fragments
  implementation "androidx.navigation:navigation-dynamic-features-fragment:$nav_version"

  // Testing Navigation
  androidTestImplementation "androidx.navigation:navigation-testing:$nav_version"

  // JSON serialization library, works with the Kotlin serialization plugin.
  implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3"
}

plugins {
  // Kotlin serialization plugin for type safe routes and navigation arguments
  kotlin("plugin.serialization") version "2.0.21"
}

dependencies {
  val nav_version = "2.8.5"

  // Jetpack Compose integration
  implementation("androidx.navigation:navigation-compose:$nav_version")

  // Views/Fragments integration
  implementation("androidx.navigation:navigation-fragment:$nav_version")
  implementation("androidx.navigation:navigation-ui:$nav_version")

  // Feature module support for Fragments
  implementation("androidx.navigation:navigation-dynamic-features-fragment:$nav_version")

  // Testing Navigation
  androidTestImplementation("androidx.navigation:navigation-testing:$nav_version")

  // JSON serialization library, works with the Kotlin serialization plugin
  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
}

Safe Args

To add Safe Args to your project, include the following classpath in your top level build.gradle file:

buildscript {
    repositories {
        google()
    }
    dependencies {
        def nav_version = "2.8.5"
        classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version"
    }
}

buildscript {
    repositories {
        google()
    }
    dependencies {
        val nav_version = "2.8.5"
        classpath("androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version")
    }
}

You must also apply one of two available plugins.

To generate Java language code suitable for Java or mixed Java and Kotlin modules, add this line to your app or module's build.gradle file:

plugins {
  id 'androidx.navigation.safeargs'
}

plugins {
    id("androidx.navigation.safeargs")
}

Alternatively, to generate Kotlin code suitable for Kotlin-only modules add:

plugins {
  id 'androidx.navigation.safeargs.kotlin'
}

plugins {
    id("androidx.navigation.safeargs.kotlin")
}

You must have android.useAndroidX=true in your gradle.properties file as per Migrating to AndroidX.

For information on using Kotlin extensions, see the ktx documentation.

For more information about dependencies, see Add Build Dependencies.

Feedback

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 2.9

Version 2.9.0-alpha04

December 11, 2024

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

New Features

• The type safe APIs that were previously only accessible via reified methods i.e., composable<YourScreen> now have non-reified versions that directly take a KClass instance.(Ia7eed, Id2879, Ibf244, I17d79, Id09d2, I54696, Ia47be, I93281, Ic1bf0, Iba4ee, If56a5, Icf969, I67644, I6f788, b/382094941, b/366291612, b/381938808)

The table below provides the reified and KClass APIs.

API Changes

• The kotlin-specific NavGraph.setStartDestination overload for type safety is hidden from Java sources. (Ic640c, b/364634035)

Bug Fixes

• From Navigation 2.8.5: Fixed an issue where NavHost could throw an exception inside of the PredictiveBackHandler if the back stack is popped down to 1 entry and a system back are triggered in the same frame. (I1a429, b/375343407)
• From Navigation 2.8.5: Fixed NavDestination NullPointerException when updating a graph's startDestination. (I99421, b/361560785)

Version 2.9.0-alpha03

November 13, 2024

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

New Features

• Navigation type safety now supports value classes as a route or as the argument type of a route. (I9344a, b/374347483)

Bug Fixes

• Fixed a ConcurrentModificationException that could occur when a LifecycleObserver attached to a NavBackStackEntry triggers a change to the back stack when the host LifecycleOwner such as the containing Activity or Fragment changes its lifecycle state. (Ia9494)

Version 2.9.0-alpha02

October 30, 2024

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

External Contribution

• New common NavController.handleDeepLink(request: NavDeepLinkRequest) method. Thanks Konstantin Tskhovrebov! (I3e228)

Version 2.9.0-alpha01

October 16, 2024

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

New Features

• Custom Navigators can now mark their destinations as implementing the SupportingPane interface which indicates to the NavController that these destinations will be shown alongside other destinations. By using this interface, multiple destinations can be RESUMED at the same time, for instance. (Id5559)
• From Navigation 2.8.3: Added new lint checks for the navigation-common, navigation-runtime, and navigation-compose modules to help identify any type-safe routes that are not correctly annotated with @Serializable. This check is applied to all NavGraphBuilder and NavDeepLinkBuilder extension functions. (I4a259, I95402, Ie601a, Id8c6e, I28bda, b/362725816)
• From Navigation 2.8.3: Added new lint checks for the navigation-common, navigation-runtime, and navigation-compose modules to help identify any type-safe routes with Enum arguments that are not correctly annotated with @Keep. This check is applied to all NavGraphBuilder and NavDeepLinkBuilder extension functions. (I4a259, I95402, Ie601a, Id8c6e, I2b46f, b/358687142)

Behavior Changes

• Attempting to use a NavController that has been previously DESTROYED will now cause an IllegalStateException. (I520da, b/369616172)

Bug Fixes

• Update Enum class not found exception to suggest using @Keep annotation in case the Enum class gets erased in minified builds. (I90e79, b/358137294)

Known Issues

• There is an issue with the new lint rules that were added in Navigation 2.8.* that cause an Obsolete custom lint check error when attempting to run lint with Android Gradle Plugin 8.4+. (b/368070326, b/371463741)

Version 2.8

Version 2.8.5

December 11, 2024

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

Bug Fixes

• Fixed an issue where NavHost could throw an exception inside of the PredictiveBackHandler if the back stack is popped down to 1 entry and a system back are triggered in the same frame. (I1a429, b/375343407)
• Fixed NavDestination NullPointerException when updating a graph's startDestination. (I99421, b/361560785)
• Fixed an issue that caused an unexpected scale animation when using Navigation Compose and calling navigate in the same frame that the current animation is ending. (I26cb1, b/353294030)
• Fixed a ConcurrentModificationException that could occur when a LifecycleObserver attached to a NavBackStackEntry triggers a change to the back stack when the host LifecycleOwner such as the containing Activity or Fragment changes its lifecycle state. (Ia9494)

Version 2.8.4

November 13, 2024

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

New Features

• From Navigation 2.9.0-alpha03: Navigation type safety now supports value class as route or as the argument type of a route (I9344a, b/374347483)

Bug Fixes

• From Navigation 2.9.0-alpha01: Attempting to use a NavController that has been previously DESTROYED will now cause an IllegalStateException. (I520da, b/369616172)

Version 2.8.3

October 16, 2024

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

New Features

• Added new lint checks for the navigation-common, navigation-runtime, and navigation-compose modules to help identify any type-safe routes that are not correctly annotated with @Serializable. This check is applied to all NavGraphBuilder and NavDeepLinkBuilder extension functions. (I4a259, I95402, Ie601a, Id8c6e, I28bda, b/362725816)
• Added new lint checks for the navigation-common, navigation-runtime, and navigation-compose modules to help identify any type-safe routes with Enum arguments that are not correctly annotated with @Keep. This check is applied to all NavGraphBuilder and NavDeepLinkBuilder extension functions. (I4a259, I95402, Ie601a, Id8c6e, I2b46f, b/358687142)

Bug Fixes

• Fixed an issue where the new lint rules that were added in Navigation 2.8.* would cause an Obsolete custom lint check error when attempting to run lint with Android Gradle Plugin 8.4+. (I1be3d, b/368070326, b/371463741)

Known Issues

• Navigation lint will throw an Obsolete custom lint check error when attempting to run lint with Lint 16 (AGP 8.7) or higher. (b/371926651)

Version 2.8.2

October 2, 2024

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

New Features

• Navigation Type Safety now supports Serializable classes that include a Double, Double?, DoubleArray, DoubleArray?, List<Double>, and List<Double>? without requiring any custom NavType. (I570eb, Ibc4c0, I37461, I5bed4, b/359245753)

Bug Fixes

• Improved the error message for when Navigation fails to map a route's argument to a NavType, the new error message will contain the argument name, argument fully qualified name, and the route's fully qualified name. (Id8416, b/346264232)

Version 2.8.1

September 18, 2024

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

New Features

• Added a new lint rule to ensure the use of the popBackStack function that takes a reified class type when attempting to popBackStack using type-safe APIs. (Ief161, b/358095343)

Bug Fixes

• Navigation now requires that the route passed to a NavGraph's startDestination contains the values for all required arguments, which includes arguments that are non-nullable and have no default value. (I18e74, b/362594265)
• Navigation safe args has added support for non-nullable strings such that "null" values will be parsed and stored into the bundle as is. This departs from existing behavior where "null" values are parsed into a null object. This change only applies to non-nullable String types. Nullable strings remain unchanged. (I08b4a, b/348936238)
• A NavDestination can no longer be deeplinked into except through a deep link that was explicitly added to the destination. This also means that you can only navigate to a destination's route with the navigate function overload that takes a string route. This fixes a vulnerability that made it possible to deep link to a potentially protected destination. (Ie30e6)

Dependency Update

• Navigation Safe Args now depends on Kotlin 1.9.24, rather than Kotlin 2.X, ensuring that developers are not forced to update. (a4129a)
• Navigation Compose now depends on Compose 1.7.2.

Version 2.8.0

September 4, 2024

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

Important changes since 2.7.0

Navigation Kotlin DSL Type-Safety

• Navigation now provides type-safety for the Kotlin DSL (used by Navigation Compose) using Kotlin Serialization to allow you to define destinations in your navigation graph via type safe objects and data classes:

    // Define a home destination that doesn't take any arguments
    @Serializable
    object Home

    // Define a profile destination that takes an ID
    @Serializable
    data class Profile(val id: String)

    // Now define your NavHost using type safe objects
    NavHost(navController, startDestination = Home) {
        composable<Home> {
            HomeScreen(onNavigateToProfile = { id ->
                navController.navigate(Profile(id))
            })
        }
        composable<Profile> { backStackEntry ->
            val profile: Profile = backStackEntry.toRoute()
            ProfileScreen(profile)
        }
    }

See the Navigation Compose meet Type Safety blog post for more information.

Navigation Compose Predictive Back

• Navigation Compose now provides support for Predictive in-app back via the new SeekableTransitionState APIs from compose-animation. This allows you to use the back gesture to see the previous destination with your custom Transition before deciding to either commit the transaction via the completed gesture or cancel.

Navigation Fragment Composable

• Added a new navigation-fragment-compose artifact that includes a ComposableNavHostFragment alternative to NavHostFragment that allows you to add composable destinations to your Navigation XML files. Each composable destination must be expressed as a top-level, no argument @Composable method whose fully qualified name is used as the android:name attribute on each destination. When navigating to one of these destinations, a containing fragment is created to display the composable content.

  // In HomeScreen.kt
  @Composable
  fun HomeScreen() {
    // Your Composable content here
  }

  // In your navigation.xml
  <composable
    android:id="@+id/home_screen"
    android:name="com.example.HomeScreenKt\$HomeScreen" />

Other Changes

• Navigation Compose now depends on Compose 1.7.0.
• Navigation now provides a new CollectionNavType<T> class, a subclass of NavType<T> for collection-based arguments such as list, arrays, maps. All of the default NavType arrays (IntArrayType, LongArrayType, FloatArrayType, BoolArrayType, and StringArrayType) now inherit from this new class.
• NavType now has built-in support for Lists of Int, String, Boolean, Float, and Long.

Version 2.8.0-rc01

August 21, 2024

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

Bug Fixes

• Fix navigation crash when passing in top level Enum classes as type safe arguments. (I0ba76, b/358137294)
• Navigation 2.8 now correctly works with SDK 34 and will not swap over to SDK 35 until the 2.9 release along with the rest of the AndroidX libraries. (b/358798728)

Version 2.8.0-beta07

August 7, 2024

androidx.navigation:navigation-*:2.8.0-beta07 is released. Version 2.8.0-beta07 contains these commits.

Known Issues

• Due to b/358137294, only Enums nested in another class are supported out of the box. Top level Enums will be supported in the next release.

Bug Fixes

• When navigating to duplicate or shared destinations, navigation will prioritize going to the closest matching destination from the current location in the graph. (Ic89a4, b/352006850)
• Navigation in safe args now has added a new NavType.EnumType. This means Enum types no longer require custom NavTypes. Note that the Enum’s SerialName must be the default fully qualified name. (I66d22, b/346475493)
• Navigation in safe args has added built-in support for nullable argument types including Int?,Long?, Float?, Boolean?, and Enum<*>?. (I32d13,I1c580,Ifba66,I978b0,Ide076 , b/351994237)
• The NavGraph’s startDestination will now use the default argument values if the startDestination route passed to the NavGraph is exactly equal to the startDestination.route. (I13762, b/354046047)

Version 2.8.0-beta06

July 24, 2024

androidx.navigation:navigation-*:2.8.0-beta06 is released. Version 2.8.0-beta06 contains these commits.

Bug Fixes

• Fixed an issue where the WrongStartDestinationType lint checks did not check for Companion objects on the passed in class type, causing lint to fail to detect the error. (I92b09)

Version 2.8.0-beta05

July 10, 2024

androidx.navigation:navigation-*:2.8.0-beta05 is released. Version 2.8.0-beta05 contains these commits.

Bug Fixes

• Fix singleTop navigation crash when nested NavGraphs share the same startDestination route. (I17b94, b/294408596)

Version 2.8.0-beta04

June 26, 2024

androidx.navigation:navigation-*:2.8.0-beta04 is released. Version 2.8.0-beta04 contains these commits.

Bug Fixes

• Navigation now supports navigating with empty strings in path arguments. (Ic5dbd, b/339481310)
• Improve error message for custom serializers declared directly on class fields via @Serializable(with =...) to clarify that this is currently an unsupported feature. (I052b0, b/341319151)
• SavedStateHandleFactory test api can now be used in non-android tests but will require Robolectric to support argument parsing with Bundles. (I76cdc, b/340966212)
• Fixed crash from restoring state when resuming the app after process death with using Type-Safe Navigation in Compose. (Ia8f38, b/341801005)
• Fixed an issue in Navigation Compose where after canceling the Predictive Back Gesture, the NavBackStackEntry that the user returns to never returns back to the RESUMED Lifecycle State. This also ensures the returning destination correctly animates back in instead of snapping into place after a fling. (I97a0c, b/346608857)
• When using Predictive back with Navigation Compose, the destination being popped will now have the proper z-order, correctly animating on top of the incoming destination. (I2077b, b/345993681)

Version 2.8.0-beta03

June 12, 2024

androidx.navigation:navigation-*:2.8.0-beta03 is released. Version 2.8.0-beta03 contains these commits.

API Changes

• CollectionNavType has a new abstract emptyCollection() method. Override this to handle an empty collection passed in as an argument. (Ie4d84, b/341723133)

Bug Fixes

• Added documentation on NavType.serializeAsValue and serializeAsValues to highlight that the final outputs should be Uri encoded. (Ida6bd, b/344943214)
• Fixed crash when calling toRoute<T> with a null CollectionNavType argument. When navigating with a null CollectionNavType, the output argument will be the default value declared on your Serializable class, or the return value of emptyCollection() if there is no default value. (I84158, Id630f, b/342672856)

Version 2.8.0-beta02

May 29, 2024

androidx.navigation:navigation-*:2.8.0-beta02 is released. Version 2.8.0-beta02 contains these commits.

Bug Fixes

• Fixed ClassCastException crash when using NavBackStackEntry.toRoute with a nullable custom NavType. (I1c29b, b/342239473)
• Fixed Navigation back stack state restoration issues caused when attempting to restore a back stack entry that is not reachable via id from the current destination. Since routes are backed by ids, destinations built with routes were also affected. This also fixes a crash caused by calling clearBackStack() that had the same underlying issue. (I423c3, b/339908057)

Version 2.8.0-beta01

May 14, 2024

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

API Changes

• SavedStateHandle.toRoute() now takes in a typeMap parameter for custom argument types. (Ie39fb, b/339026523)
• Added a test API to navigation-testing to to create a SavedStateHandle from a Kotlin Serializable object. (Id4867, b/339080702)

Bug Fixes

• Missing parameter docs for Navigation Kotlin DSL functions have been added. (I26a36)

Version 2.8.0-alpha08

May 1, 2024

androidx.navigation:navigation-*:2.8.0-alpha08 is released. Version 2.8.0-alpha08 contains these commits.

Safe Args in Navigation Compose

• The work to support compile time type safety for Navigation Compose and users of the Navigation Kotlin DSL based on Kotlin Serialization has completed and previously experimental APIs are now stable. (Iea94d, I0eb0d, I873b7, I3a64b, I6c3a2, I11f0b, Ic3032, I8d394, I95710, Ice060, Id0e55, I45f8b, Idcdaf, If5380, I08b23, Ia5c59, b/188693139)

This functionality uses Kotlin Serialization to allow you to define destinations in your navigation graph via type safe objects and data classes:

  // Define a home destination that doesn't take any arguments
  @Serializable
  object Home

  // Define a profile destination that takes an ID
  @Serializable
  data class Profile(val id: String)

  // Now define your NavHost using type safe objects
  NavHost(navController, startDestination = Home) {
      composable<Home> {
          HomeScreen(onNavigateToProfile = { id ->
              navController.navigate(Profile(id))
          })
      }
      composable<Profile> { backStackEntry ->
          val profile: Profile = backStackEntry.toRoute()
          ProfileScreen(profile)
      }
  }

See the Navigation Compose meet Type Safety blog post for more information.

New Features

• The navigation-fragment-compose artifact now provides a LocalFragment composition local to composable methods within a ComposableFragment. (If35e5)
• NavType now has built-in support for Lists of Int, String, Boolean, Float, and Long. (I4b6dd, Ia914c, b/188693139)

Version 2.8.0-alpha07

April 17, 2024

androidx.navigation:navigation-*:2.8.0-alpha07 is released. Version 2.8.0-alpha07 contains these commits.

New Features

• Adds a new navigation-fragment-compose artifact that includes a ComposableNavHostFragment alternative to NavHostFragment that allows you to add composable destinations to your Navigation XML files. Each composable destination must be expressed as a top-level, no argument @Composable method whose fully qualified name is used as the android:name attribute on each destination. When navigating to one of these destinations, a containing fragment is created to display the composable content. (I0ef2e, b/265480755)

  // In HomeScreen.kt
  @Composable
  fun HomeScreen() {
    // Your Composable content here
  }
  

  // In your navigation.xml
  <composable
    android:id="@+id/home_screen"
    android:name="com.example.HomeScreenKt\$HomeScreen" />
  

API Changes

• Support for Safe Args in Navigation Compose using an approach based on Kotlin Serialization continued. These APIs are not finished and are marked with the ExperimentalSafeArgsApi annotation. This annotation will be removed when the entire API surface is complete in a future release. (Iefd95, I409c8, I5b5ac, I7e753, I960f8, I3eabd, I8ed5a, Ied2c9, I9b73c, I554db, Ib3aba, Ia668d, b/188693139)

Version 2.8.0-alpha06

April 3, 2024

androidx.navigation:navigation-*:2.8.0-alpha06 is released. Version 2.8.0-alpha06 contains these commits.

API Changes

• Support for Safe Args in Navigation Compose using an approach based on Kotlin Serialization has begun. These APIs are not finished and are marked with the ExperimentalSafeArgsApi annotation. This annotation will be removed when the entire API surface is complete in a future release. (I644e7, I98896, I2a1c5, I43a51, I836a1, Ic5eec, I39407, I24e41, If9e14, Ibb13e, If44d3, Icb70f, I8972f, I1d432, Icf32b, I20a14, I262aa, I7de99, I35990, I1033d, b/188693139)

Bug Fixes

• NavHost now used Alignment.TopStart as the default contentAlignment argument. This puts it in line with the default for AnimatedContent and fixes some instances of an unexpected scale from center transition. (I09e72, b/330111602)
• When flicking the predictive back gesture while using Navigation Compose, the NavHost will now correctly complete the custom transition instead of immediately finishing. (I99017, b/327292110)

Version 2.8.0-alpha05

March 20, 2024

androidx.navigation:navigation-*:2.8.0-alpha05 is released. Version 2.8.0-alpha05 contains these commits.

New Features

• You can now pass arguments to NavGraph's startDestination directly in the startDestination route without relying on defaultValue. This applies to nested NavGraph startDestinations as well. (I0e0b5, b/109505019, b/188693139)

API Changes

• Added new abstract CollectionNavType<T> class, a subclass of NavType<T> for collection-based arguments such as list, arrays, maps. (Ic6d63, b/188693139)
• All of the default NavType arrays (IntArrayType, LongArrayType, FloatArrayType, BoolArrayType, and StringArrayType) are now of type CollectionNavType (Idcf79, b/188693139)
• NavType now provides a new open valueEquals API that determines if two values of the same type are equal to one another. (I6cb97, b/327229511)

Bug Fixes

• Query parameters in deep links now allows values in the form of curly braces around argument name (i.e. {argName}) as valid values for string-based NavTypes. This fixes an issue where such a value would be considered invalid (or absence of value) for all types. (I18302, b/327274038)
• NavController functions that support routes such as navigate or popBackStack can now properly match routes filled with arguments of Array NavTypes. (Iea805, b/327229511)

Version 2.8.0-alpha04

March 6, 2024

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

New Features

• You can now specify the SizeTranform for your transitions in Navigation Compose by defining them as part of the initialization for the composable and/or navigation functions. (I91062, b/296912651)

Bug Fixes

• Fixed an issue where NavHost in Compose Navigation failed to properly show the transition when using System Back without a gesture. (Iceeae, b/325998468)

Version 2.8.0-alpha03

February 21, 2024

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

API Changes

• NavBackStackEntry.savedStateHandle is now marked as @MainThread as it uses code that is required to be on the main thread anyway. (Ibb988, b/299523245)

Bug Fixes

• Fixed an issue in Navigation that caused NavGraph ViewModels to be DESTROYED too soon because the associated entry’s ViewModel was not part of the saved state. (Ib6bb7, b/317581849)

Dependency Update

• Navigation Compose now depends on Compose 1.7.0-alpha03.

Version 2.8.0-alpha02

February 7, 2024

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

New Features

• Navigation Compose now provides support for Predictive in-app back via the new SeekableTransitionState APIs from compose-animation. This allows you to use the back gesture to see the previous destination with your custom Transition before deciding to either commit the transaction via the completed gesture or cancel. (I8b8e9)

Version 2.8.0-alpha01

January 24, 2024

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

Bug Fixes

• Fixed BackStackState leak where multiple saveState calls on a destination would result in multiple states to be saved, but only the first one could be restored. (I598b0, b/309559751)
• Fixed an issue where non-String arguments would not be properly displayed when using the NavigationUI helpers to populate the title of app bars. (#636, b/316676794)

Dependency Update

• Navigation Compose now depends on Compose 1.7.0-alpha01 fixing an issue that could cause an unexpected scale animation. (b/297258205)

External Contribution

• Thanks SimonMarquis for fixing the display issue for non-String arguments when using the NavigationUI helpers to populate the title of app bars.

Version 2.7.7

Version 2.7.7

February 7, 2024

androidx.navigation:navigation-*:2.7.7 is released. Version 2.7.7 contains these commits.

Bug Fixes

• Backported from Navigation 2.8.0-alpha01: Fixed BackStackState leak where multiple saveState() calls on a single NavBackStackEntry would result in multiple states being saved, but only the first saved state could be restored. (I598b0, b/309559751)
• Backported from Navigation 2.8.0-alpha01: Fixed an issue where non-String arguments would not be properly displayed when using the NavigationUI helpers to populate the title of app bars. (#636, b/316676794)

External Contribution

• Thanks SimonMarquis for fixing the display issue for non-String arguments when using the NavigationUI helpers to populate the title of app bars.

Version 2.7.6

Version 2.7.6

December 13, 2023

androidx.navigation:navigation-*:2.7.6 is released. Version 2.7.6 contains these commits.

Bug Fixes

• The NavGraph equals() function now correctly considers the nodes of the other graph instead of just the calling one. This will ensure that graphs that have nodes with different ids will no longer be considered equal (I401cb, b/311414915)

Version 2.7.5

Version 2.7.5

November 1, 2023

androidx.navigation:navigation-*:2.7.5 is released. Version 2.7.5 contains these commits.

Performance Improvements

• Greatly improved the performance (both in terms of time and number of allocations) of comparing two graphs. This means that calls such as setGraph which internally compare the new graph to the existing one are much faster and result in fewer skipped frames. Thank you Michał Z for the thorough analysis that led to this improvement. (I6ad62)
• NavHost will now render the start destination on the first composition pass instead of needing to wait for the second pass to read updated state. (I439a7, b/304852206)

Bug Fixes

• Fixed an issue where your back stack would be popped if you called setGraph more than once with the exact same graph only if there was a destination in your graph that contained an action linking two destinations. (Ieaed7)
• Dialogs that were navigated to and dismissed in quick succession will no longer leak into the list of NavController.visibleEntries. (I67586, b/287969970)
• When an entry is popped followed by a configuration change, the entry's ViewModel will now be cleared properly if saveState is false. (Idf242, b/298164648)
• Fixed an issue where NavController could handle the same deep link more than once if the back stack was entirely empty before a configuration change or call to setGraph only when the incoming Intent had the FLAG_ACTIVITY_NEW_TASK flag set. (I73c7f)

Dependency Updates

• Navigation with Fragments now depends on Fragment 1.6.2, fixing an issue where the ViewModel instances of nested fragments would not be cleared when calling clearBackStack.

Version 2.7.4

Version 2.7.4

October 4, 2023

androidx.navigation:navigation-*:2.7.4 is released. Version 2.7.4 contains these commits.

New Features

• Added support for popUpTo to use routes with arguments to allow popping back to a specific entry that uses those exact arguments, matching the support found in popBackStack. (I731f4, b/299255572)

Bug Fixes

• Fix issue where interrupting a navigate with another navigate with popUpTo will cause FragmentNavigator to crash. (I3c848, b/301887045)
• Fixed issue where system back press caused the currentDestination to not be updated correctly to match the displayed Fragment. (Id0d6c, b/289877514)
• DialogFragment lifecycle will now properly move to RESUMED state when the dialog above it is dismissed. (I88f0d, b/301811387)

Version 2.7.3

Version 2.7.3

September 20, 2023

androidx.navigation:navigation-*:2.7.3 is released. Version 2.7.3 contains these commits.

Bug Fixes

• Fixed an issue in Navigation with Fragments that caused the visibleEntries list to contain incorrect entries. (I5caa9, b/288520638)
• Fixed an issue that caused Floating Window destination (i.e. Dialogs, Bottomsheets, etc) to never get a RESUMED Lifecycle callback. (I3b866, b/287505132)

Version 2.7.2

Version 2.7.2

September 6, 2023

androidx.navigation:navigation-*:2.7.2 is released. Version 2.7.2 contains these commits.

Bug Fixes

• Navigation now depends on Lifecycle 2.6.2, fixing an interaction between rememberSaveable and Navigation Compose’s NavHost that would cause the rememberSaveable state of destinations and any ViewModel owned SavedStateHandle instances from being properly restored after process death and recreation. (b/298059596, b/289436035)
• Fixed an issue when showing multiple dialogs in Navigation Compose simultaneously where the partially obscured dialogs (e.g., not the topmost dialog) would be in the CREATED Lifecycle state rather than the STARTED state. (aosp/2728520, b/289257213)
• Fixed an issue when showing multiple dialogs in Navigation Compose simultaneously where dismissing the topmost dialog would cause the new topmost dialog to be stuck in the STARTED Lifecycle state rather than correctly moving to RESUMED. (aosp/2629401, b/286371387)
• Navigation Safe Args no longer instantiates its task eagerly if it is not actually being executed. (I0e385, b/260322841)

Dependency Update

• Navigation Compose now depends on Compose 1.5.1.

Version 2.7.1

Version 2.7.1

August 23, 2023

androidx.navigation:navigation-*:2.7.1 is released. Version 2.7.1 contains these commits.

Bug Fixes

• Fixed an issues in Navigation with Compose where when using a Scaffold it was possible to get an error for trying to access a Lifecycle.State.DESTROYED ViewModel. (I1dc11, b/268422136)

Version 2.7.0

Version 2.7.0

August 9, 2023

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

Important changes since 2.6.0

Animations from Accompanist

Now that AnimatedContent is stable, we were able to move the code from Accompanist Navigation Animation back into Navigation Compose itself.

This means all of the support for setting custom transitions that existed in AnimatedNavHost is directly supported in NavHost.

No additional changes will be made to Accompanist Navigation Animation and we’ll be formally deprecating it soon, along with guidance on how to migrate back to Navigation Compose itself, but it'll be the inverse of the migration guide with no other API changes required if you're already using the latest Accompanist alpha (0.31.2-alpha). (b/197140101)

Bug Fixes

• NavHost in Navigation Compose now correctly intercepts system back calls even after the Activity has been STOPPED and RESUMED. (Icb6de, b/279118447)

Dependency Updates

• Navigation now depends on Compose 1.5.0 up from 1.1.0.

Version 2.7.0-rc01

July 26, 2023

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

Bug Fixes

• Fixed an issue where the EnterTransition and ExitTransition lambdas created as part of the NavHost could potentially remain in memory even after the NavHost is removed from composition. (I893d0)

Known Issues

• There is an issue from Navigation 2.6.x that when navigating with popUpTo it is possible to cause an IllegalArgumentException. It is possible that this exception can be avoided by restructuring your graph, similar to the advice suggested here. (b/287133013)

Version 2.7.0-beta02

June 28, 2023

androidx.navigation:navigation-*:2.7.0-beta02 is released. Version 2.7.0-beta02 contains these commits.

Bug Fixes

• Navigation Compose now has the right z-order for custom transitions that use navigate with the popUpTo option.(/Ib1c3a, b/285153947)

Version 2.7.0-beta01

June 7, 2023

androidx.navigation:navigation-*:2.7.0-beta01 is released. Version 2.7.0-beta01 contains these commits.

Bug Fixes

• NavHost in Navigation Compose now correctly intercepts system back calls even after the Activity has been STOPPED and RESUMED. (Icb6de, b/279118447)

Version 2.7.0-alpha01

May 24, 2023

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

Animations from Accompanist

Now that AnimatedContent is stable, we were able to move the code from Accompanist Navigation Animation back into Navigation Compose itself.

This means all of the support for setting custom transitions that existed in AnimatedNavHost is directly supported in NavHost.

No additional changes will be made to Accompanist Navigation Animation and we’ll be formally deprecating it soon, along with guidance on how to migrate back to Navigation Compose itself, but it'll be the inverse of the migration guide with no other API changes required if you're already using the latest Accompanist alpha (0.31.2-alpha). (b/197140101)

Bug Fixes

• From Navigation 2.6.0-rc02: Fixed an issue with Navigation in Fragments where navigating with popUpTo and popping a fragment off the back stack without recreating its view would cause system back to stop working. (Ieb8d4, b/281726455)

Dependency Updates

• Navigation now depends on Compose 1.5.0-beta01.

Version 2.6.0

Version 2.6.0

June 7, 2023

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

Important changes to Navigation since 2.5.0

• NavBackStackEntry's arguments and the arguments passed to an OnDestinationChangedListener are now only a copy of the immutable arguments that were created when you navigated to the destination. This means any changes made to those Bundles will not be reflected in subsequent accesses to the arguments or other OnDestinationChangedListener instances.
• NavDeepLink now supports default values for arrays, which allows support for repeated query params that will map to the argument's array type. NavType also now includes a default method which can be overridden to combine two parsed values.
• Custom subclasses of NavType can now override serializeAsValue to serialize a value into a String, allowing both serialization and deserialization (via parseValue) to be entirely encapsulated in the NavType class. StringType now overrides this method to call Uri.encode on the given String.

Important changes to Navigation Compose since 2.5.0

• When previewing a composable with NavHost, it will now show the NavGraph's startDestination by default.
• NavController.popBackStack(route), NavController.getBackStackEntry(route), NavController.clearBackStack(route) now all support routes with arguments partially or fully filled in. Note that the arguments have to be an exact match with the entry's arguments.
• Attempting to create an empty NavDeepLink using the navDeepLink Kotlin DSL will now result in a lint warning indicating that a deep link needs an uri, action, and/or mimetype to be valid.

Important changes to Navigation with Fragments since 2.5.0

• NavHostFragment no longer intercepts the system back button itself. This allows the underlying FragmentManager to handle system back. This allows Fragment 1.7.0-alpha01 and higher to provide an In-App Predictive Back animation on Android U devices.
• When using Navigation with Fragments, attempting to manually do a FragmentTransaction that adds a fragment to the FragmentManager's back stack will now throw an IllegalArgumentException. You should always add fragments via the navigate() API.
• When using the exact string ${applicationId} as the placeholder in the app:data and app:dataPattern attributes in the activity element of a navigation XML file, the placeholder will be automatically filled in with the packageName of the context upon inflation.
• The FragmentNavigator now uses the transition APIs when navigating and popping NavBackStackEntries. This means that the NavBackStackEntry Lifecycle will now wait for the entering and exiting fragment special effects to complete before moving their final Lifecycle.State.
• The DialogFragmentNavigator now uses the transition APIs when navigating and popping NavBackStackEntries. This means that the NavBackStackEntry Lifecycle will now wait for the DialogFragment Lifecycle to move to DESTROYED before moving to DESTROYED itself.
• NavHostFragment now allows you to retrieve the NavController as soon as the NavHostFragment is attached to the FragmentManager, rather than only after onCreate().
• Navigation's support for Dynamic Feature Modules now depend on the granular Play Feature Delivery Library.
• Navigation Safe Args now depends on Android Gradle Plugin version 7.3.0. This means it is now only compatible with versions 7.3.0+.

Important changes to NavigationUI since 2.5.0

• When passing the ID of a navigation graph to AppBarConfiguration (such as via a Menu), NavigationUI now only considers the start destination of that navigation graph as a top level destination, rather than incorrectly marking every destination within the graph as a top level destination. The behavior of passing the ID of an individual destination is unchanged. This same functionality is available to your own code via the new isTopLevelDestination function on AppBarConfiguration.
• The setupWithNavController integrations in NavigationUI for working with the top app bar will now parse R.string values for ReferenceType arguments found in your android:label into their String values instead of outputting the auto-generated resource integer.
• NavigationUI now provides logs when it fails to navigate via a selected MenuItem.

Version 2.6.0-rc02

May 24, 2023

androidx.navigation:navigation-*:2.6.0-rc02 is released. Version 2.6.0-rc02 contains these commits.

Bug Fixes

• Fixed an issue with Navigation in Fragments where navigating with popUpTo and popping a fragment off the back stack without recreating its view would cause system back to stop working. (Ieb8d4, b/281726455)

Version 2.6.0-rc01

May 10, 2023

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

Bug Fixes

• Fixed an issue in Navigation with fragments where removing a fragment via navigate with popUpTo in its onResume() lifecycle callback would cause an IllegalStateException. (I21884, b/279644470)

Version 2.6.0-beta01

April 19, 2023

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

New Features

• NavBackStackEntry now provides a custom toString implementation. (Iff00b)

Bug Fixes

• When using Navigation with Fragments, attempting to manually do a FragmentTransaction that adds a fragment to the FragmentManager's back stack will now throw an IllegalArgumentException. You should always add fragments via the navigate() API. (I6d38e)
• When there is a navigate that adds an entry and a popBackStack that removes it in the same frame, the resulting top entry on the back stack will now consistently make it back to the RESUMED Lifecycle.State. (Id8067, b/276495952)

Version 2.6.0-alpha09

April 5, 2023

androidx.navigation:navigation-*:2.6.0-alpha09 is released. Version 2.6.0-alpha09 contains these commits.

Bug Fixes

• Fixed checks for invalid route such that if a NavDestination contains non-nullable NavArgument, this destination's route must contain placeholders for args named the same as the non-nullable NavArgument. (Ic62bf, b/274697949)
• Deeplink navigations based on Action/MimeType will now fail if the navigation operation is missing a non-nullable NavArgument required by the NavDestination that the Action/MimeType matches with. (Ibfa17, b/271777424)
• When NavController sets a graph with the same route and destinations as the previous graph, it now properly replaces its current graph nodes and its back stack destinations with new instances. This fixes a crash when using onLaunchSingleTop without saving state in Navigation Compose. This also fixes an error where navigating to destinations associated with the root graph builds and incorrect back stack. (I5bc58, b/275258161, b/275407804)

Version 2.6.0-alpha08

March 22, 2023

androidx.navigation:navigation-*:2.6.0-alpha08 is released. Version 2.6.0-alpha08 contains these commits.

New Features

• NavHostFragment now allows you to retrieve the NavController as soon as the NavHostFragment is attached to the FragmentManager, rather than only after onCreate(). (Ic6382, b/220186282)

Bug Fixes

• Fixed a NullPointerException when popping a nested graph that includes a non-nullable argument. (6b3581, b/249988437)
• When using system back after doing a navigate with popUpTo, the state of the NavController will pop to the correct entry. (I3a8ec, b/270447657)
• FragmentNavigator will now properly pop entries when the back stack is popped via system back or popBackStack() and whether or not the transaction uses effects for the fragment. (I81bdf)
• Adding fragments to the FragmentNavigator's FragmentManager without using navigation will no longer cause a crash. (b17204, b/274167493)

Dependency Updates

• Navigation now depends on Lifecycle 2.6.1. (586fe7)
• Navigation now depends on SavedState 1.2.1. (078e4e)
• Navigation now depends on ProfileInstaller 1.3.0. (512f0c)

Version 2.6.0-alpha07

March 8, 2023

androidx.navigation:navigation-*:2.6.0-alpha07 is released. Version 2.6.0-alpha07 contains these commits.

Bug Fixes

• The getBackStackEntry, popBackStack, clearBackStack API variants that take routes now take route patterns with nullable arguments and nullable query params (I22294, b/269302500)
• Fixed an issue where calling clearBackStack() from the NavController would not clear the saved state in the fragment manager associated with the cleared back stack. (Ic1cce, b/271190202)
• Fixed a regression in 2.6.0-alpha06 that caused the wrong MenuItem in the BottomNavigationView to be highlighted when using System back between tabs. (I634f6, b/270447657)
• Fixed regression in 2.6.0-alpha06 that caused NavBackStackEntrys not to be moved to the RESUMED state when using Animations. (Ib3589, b/269646882)

Version 2.6.0-alpha06

February 22, 2023

androidx.navigation:navigation-*:2.6.0-alpha06 is released. Version 2.6.0-alpha06 contains these commits.

New features

• When previewing a composable with NavHost, it will now show the NavGraph's startDestination by default. (I2b89f)

API Changes

• All NavController navigate overloads are now annotated with @MainThread to ensure that they are called on the main thread. (I2c0b0, b/263427111)

Bug Fixes

• Fixed a crash when attempting to navigate while using Dynamic Fragment Navigation. (I3ee29, b/268360479)
• Fixed bug where navigating to another fragment via system back button does not update bottom bar to the correct selected item (If559f, b/269044426)

Known Issues

• When using Navigation with Fragments, the NavBackStackEntry's Lifecycle fails to reach RESUMED when using Animation APIs. (b/269646882)
• When using Navigation with Fragments, and navigating with BottomNavigation, if you attempt to restore a back stack with multiple entries, the BottomMenuItem is not correctly updated. (b/270447657)
• When using Navigation with Fragments, after restoring the state the NavBackStackEntry Lifecycle does not get DESTROYED when its fragment is DESTROYED . (b/270610768)

Version 2.6.0-alpha05

February 8, 2023

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

New Features

• NavController.popBackStack(route), NavController.getBackStackEntry(route), NavController.clearBackStack(route) now all support routes with arguments partially or fully filled in. Note that the arguments have to be an exact match with the entry's arguments. (Iebd28, Ic678c, I3b37b, b/257514373)
• The FragmentNavigator now uses the transition APIs when navigating and popping NavBackStackEntries. This means that the NavBackStackEntry Lifecycle will now wait for the entering and exiting fragment special effects to complete before moving their final Lifecycle.State. (I3cb19, b/238686802)
• The DialogFragmentNavigator now uses the transition APIs when navigating and popping NavBackStackEntries. This means that the NavBackStackEntry Lifecycle will now wait for the DialogFragment Lifecycle to move to DESTROYED before moving to DESTROYED itself. (I53ee5, b/261213893)

API Changes

• NavigatorState now provides the prepareForTransition API to allow Navigators to move NavBackStackEntries to intermediate Lifecycle.States. (I42c21, b/238686802)
• You can now access the back stack associated with a NavGraphNavigator or a ComposeNavigator via a backstack property. ComposeNavigator also now exposes the onTransitionComplete() callback to mark a NavBackStackEntry that has executed a navigate or popBackStack operation as complete. (I02062, I718db, b/257519195)

Bug Fixes

• Navigator state will now no-op when using the push/popWithTransition APIs and the entry is already being handled. (Iadbfa, b/261213893)
• When using launchSingleTop with a nested NavGraph all destinations starting from original destination to its startDestination will only be properly added to the top of the backstack. (Id4bea, b/253256629)
• Navigation will now properly replace the DialogFragment instance when navigating to the same destination with the launchSingleTop flag set to true. (I45b5a, b/149572817)
• Navigation SafeArgs will no longer cause a compilation error when using arguments that are exactly 19 characters long. (Id60bc, b/257110095)

Version 2.6.0-alpha04

November 9, 2022

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

New Features

• Custom subclasses of NavType can now override serializeAsValue to serialize a value into a String, allowing both serialization and deserialization (via parseValue) to be entirely encapsulated in the NavType class. StringType now overrides this method to call Uri.encode on the given String. (Ie5213, b/247637434)
• NavigationUI now provides logs when it fails to navigate via a selected MenuItem. (I2af5a, b/247730357)

Bug Fixes

• Navigation deep links are now parsed lazily instead of on graph initialization which could improve app performance at start up. (Iab0ab)
• Fixed crash caused by navigating up after deep linking to a destination with null default arguments. (I51c24, b/243183636)

Dependency Update

• Navigation's support for Dynamic Feature Modules now depend on the granular Play Feature Delivery Library. (Ib4ddc)
• Navigation Safe Args now depends on Android Gradle Plugin version 7.3.0. This means it is now only compatible with versions 7.3.0+. (I47e49)

Version 2.6.0-alpha03

October 24, 2022

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

Bug Fixes

• From Navigation 2.5.3: NavHost will no longer cause a NoSuchElementException when there is no destination available for the Crossfade to compose. It will now just skip the composition. (Ieb46e, b/253299416)
• From Navigation 2.5.3: Fixed an issue where saved Compose state (e.g., usages of rememberSaveable) were not being forgotten and removed when a destination was popped off the back stack. (I64949)

Dependency Updates

• Navigation now depends on Fragment 1.5.4. (Icd424)

Version 2.6.0-alpha02

October 5, 2022

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

Behavior Changes

• When passing the ID of a navigation graph to AppBarConfiguration (such as via a Menu), NavigationUI now only considers the start destination of that navigation graph as a top level destination, rather than incorrectly marking every destination within the graph as a top level destination. The behavior of passing the ID of an individual destination is unchanged. This same functionality is available to your own code via the new isTopLevelDestination function on AppBarConfiguration. (Ie936e, b/238496771)

Bug Fixes

• The navigation:navigation-fragment component now depends on Fragment version 1.5.2. (I00ba4)
• The selected menu item will no longer be updated when navigating to a FloatingWindow destination such as a dialog. (I4cde8, b/240308330)

Version 2.6.0-alpha01

September 7, 2022

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

New Features

• The setupWithNavController integrations in NavigationUI for working with the top app bar will now parse R.string values for ReferenceType arguments found in your android:label into their String values instead of outputting the auto-generated resource integer. (I5f803, b/167959935)
• NavDeepLink now supports default values for arrays, which allows support for repeated query params that will map to the argument's array type. NavType also now includes a default method which can be overridden to combine two parsed values. (Id68c3, b/209977108)
• When using the exact string ${applicationId} as the placeholder in the app:data and app:dataPattern attributes in the activity element of a navigation XML file, the placeholder will be automatically filled in with the packageName of the context upon inflation. (Iaabde, b/234223561)
• Attempting to create an empty NavDeepLink using the navDeepLink Kotlin DSL will now result in a lint warning indicating that a deep link needs an uri, action, and/or mimetype to be valid. (I08d2f, b/154038883)

API Changes

• Added new NavDestination extension function to parse dynamic labels with arguments in the form of android:label="{arg}" into String. Supports ReferenceType arguments by parsing R.string values into their String values. (I07d89, b/236269380)

Behavior Changes

• NavBackStackEntry's arguments and the arguments passed to an OnDestinationChangedListener are now only a copy of the immutable arguments that were created when you navigated to the destination. This means any changes made to those Bundles will not be reflected in subsequent accesses to the arguments or other OnDestinationChangedListener instances. (I676f5)

Bug Fixes

• From Navigation 2.5.2: Dynamic Navigation now properly attempts to install Activity destinations from other modules before navigating to them. (Ia2c16, b/240292838)
• From Navigation 2.5.2: Navigation will now properly replace the Fragment instance when navigating to the same destination and setting the launchSingleTop flag to true. (I5a2f1, b/237374580)
• From Navigation 2.5.2: Fixed IllegalStateException caused by navigating to a double nested graph that shares a parent with a new popped start destination. (I9f7cb, b/243778589)

Version 2.5

Version 2.5.3

October 24, 2022

androidx.navigation:navigation-*:2.5.3 is released. Version 2.5.3 contains these commits.

Bug Fixes

• NavHost will no longer cause a NoSuchElementException when there is no destination available for the Crossfade to compose. It will now just skip the composition. (Ieb46e, b/253299416)
• Fixed an issue where saved Compose state (e.g., usages of rememberSaveable) were not being forgotten and removed when a destination was popped off the back stack. (I64949)

Version 2.5.2

September 7, 2022

androidx.navigation:navigation-*:2.5.2 is released. Version 2.5.2 contains these commits.

Bug Fixes

• Dynamic Navigation now properly attempts to install Activity destinations from other modules before navigating to them. (Ia2c16, b/240292838)
• Navigation will now properly replace the Fragment instance when navigating to the same destination and setting the launchSingleTop flag to true. (I5a2f1, b/237374580)
• Fixed IllegalStateException caused by navigating to a double nested graph that shares a parent with a new popped start destination. (I9f7cb, b/243778589)

Dependency Update

• Navigation 2.5.2 now depends on Fragment 1.5.2. (aosp/2178734)

Version 2.5.1

July 27, 2022

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

Bug Fixes

• Navigation Safe Args will no longer cause deprecation warnings in generated classes when using custom argument types that are saved in a Bundle. (Id86ed, b/237725966)

Dependency Updates

• The Navigation library now depends on Lifecycle 2.5.1. (Ib4451)
• The Navigation library now depends on Activity 1.5.1. (I3efe8)
• The Navigation library now depends on Fragment 1.5.1. (I56177)

Version 2.5.0

June 29, 2022

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

Important changes since 2.4.0

• CreationExtras Integration - Navigation now has the ability to provide a stateless ViewModelProvider.Factory via Lifecycle 2.5.0’s CreationExtras.

Navigation SafeArgs

• Navigation Safe Args has upgraded the Android Gradle Plugin dependency to rely on 7.0.4, dropping compatibility for AGP versions before 7.0.
• Added support for the namespace build.gradle attribute to be used instead of applicationId.

Other Changes

• The visibleEntries API is no longer experimental and provides a function to retrieve all of the entries whose destination is currently visible according to the NavController.

Version 2.5.0-rc02

June 15, 2022

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

Bug Fixes

• Fixed a crash caused by fast switching between bottom destinations when using the Navigation Compose NavHost. (I3979a, b/234054916)
• Navigation SafeArgs will no longer crash when using an applicationIdSuffix and namespace with either no applicationId present, or when the applicationId and namespace differ. (I754b1, b/233119646)
• NavArgument now has a custom toString() function to show the internal values of the argument. (I900a8)

Version 2.5.0-rc01

May 11, 2022

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

New Features

• Added a new lint rule to warn against placing <deeplink> elements inside <activity> elements in your navigation.xml file.(Ic15a5, b/178403185)

Bug Fixes

• Composable scopes in NavHost and DialogHost are now disposed in the expected order, i.e. inner composabled are disposed before outer composables. (I157e6)
• Navigation SafeArgs now uses PathSensitivity.RELATIVE in the ArgumentsGenerationTask to allow for cache relocatability. This means the cache entry can now be re-used from a CI build to a local build. (I5f67c, b/173420454)
• The UnrememberedGetBackStackEntryDetector lint rule has been updated to ensure that the remember call surrounding the call to getBackStackEntry() also passes in a NavBackStackEntry object as a key.(Ib7081, b/227382831)

Version 2.5.0-beta01

April 20, 2022

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

Bug Fixes

• DialogNavigator now uses popWithTransition when executing a dismiss() call. This fixes a race condition when using a ViewModel within dialog destination that would cause an IllegalStateException when dismissing the Dialog by either using system back or tapping outside of the dialog to exit. (Id7376, b/226552301)

Dependency Updates

• Navigation now depends on Lifecycle 2.5.0-beta01, fixing an IllegalStateException when nesting one NavHost within another NavHost in a non-primary bottom navigation tab when using multiple back stacks.

Version 2.5.0-alpha04

April 6, 2022

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

API Changes

• visibleEntries is no longer experimental. (I4829f, b/225394514)

Bug Fixes

• NavHost now depend on visibleEntries from the NavController to determine which entries to compose. This means that when using nested NavHost the inner NavHost should now properly animate out. (I4ba2b, b/225394514)
• The visibleEntries StateFlow provided by NavController is now based on the entry max Lifecycle state instead of the current Lifecycle state. This means that even if the host lifecycle of the navController goes below STARTED, the list of visible entires will remain the same. (I9e2a8, b/225394514)
• 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)
• NavDeepLink can now parse Uris with a single query parameter with no value. (I0efe8, b/148905489)
• Empty string are now considered as valid arguments in deep links. (I70a0d, b/217399862)
• Navigation Safe Args will no longer crash when using namespaces and no AndroidManifest.xml is present. (I17ccf, b/227229815)

Version 2.5.0-alpha03

February 23, 2022

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

API Changes

• You can now pass in CreationExtras to by navGraphViewModels to create a ViewModel. (I29217, b/217618359)

Bug Fixes

• NavDeepLinks now properly support encoded new line characters embedded in routes/deep link URIs. (I513d1, b/217815060)
• CreationExtras will now work correctly when used with NavBackStackEntries to create ViewModels. (I69161, b/217617710)
• Navigation Safe Args now supports using the namespace defined in the build.gradle in place of the package in the AndroidManifest. (I659ef, b/217414933)

Version 2.5.0-alpha02

February 9, 2022

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

Bug Fixes

• From Navigation 2.4.1: The NavHostFragment will now properly set the OnBackPressedDispatcher when using viewbinding with nested graphs. (Ifbb51, b/214577959)
• From Navigation 2.4.1: When deep linking through multiple nested NavGraphs the back stack will now properly include intermediate start destinations. (I504c0, b/214383060)

Version 2.5.0-alpha01

January 26, 2022

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

New Features

• NavBackStackEntry now integrates with ViewModel CreationExtras, introduced as part of Lifecycle 2.5.0-alpha01. (Ib9fe2, b/207012490)

Bug Fixes

• Fixed an issue where accessing a ViewModel created via by navGraphViewModels() from a Fragment's onCreate() would fail with an IllegalStateException. (I8a14d)
• NavDeepLinks will no longer unnecessarily decode args twice, meaning that the proper args are now passed to your final destination. (I31b0a, b/210711399)

Safe Args

• Safe Args now depends on Android Gradle Plugin version 7.0.4. This means that Navigation Safe Args will no longer be compatible with Android Studio versions prior to 7.0, but is now compatible with Android Gradle Plugin 7.1.0 and higher. (I41c88, b/213086135, b/207670704)

Version 2.4.2

Version 2.4.2

April 6, 2022

androidx.navigation:navigation-*:2.4.2 is released. Version 2.4.2 contains these commits.

Bug Fixes

• Backported from Navigation 2.5.0-alpha03: NavDeepLinks now properly support encoded new line characters embedded in routes/deep link URIs. (I513d1, b/217815060)
• Backported from Navigation 2.5.0-alpha03: Navigation SafeArgs now supports using the namespace defined in the build.gradle in place of the package in the AndroidManifest. (I659ef, b/217414933)
• Backported from Navigation 2.5.0-alpha04: Navigation Safe Args will no longer crash when using namespaces and no AndroidManifest.xml is present. (I17ccf, b/227229815)
• Backported from Navigation 2.5.0-alpha04: Empty string are now considered as valid arguments in deep links. (I70a0d, b/217399862)

Version 2.4.1

Version 2.4.1

February 9, 2022

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

Bug Fixes

• The NavHostFragment will now properly set the OnBackPressedDispatcher when using viewbinding with nested graphs. (Ifbb51, b/214577959)
• When deep linking through multiple nested NavGraphs the back stack will now properly include intermediate start destinations. (I504c0, b/214383060)
• Backported from Navigation 2.5.0-alpha01: Fixed an issue where accessing a ViewModel created via by navGraphViewModels() from a Fragment's onCreate() would fail with an IllegalStateException. (I8a14d)
• Backported from Navigation 2.5.0-alpha01: NavDeepLinks no longer unnecessarily decode args twice, meaning that the properly decoded args are now passed to your final destination. (I31b0a, b/210711399)
• Backported from Navigation 2.5.0-alpha01: Safe Args now depends on Android Gradle Plugin version 7.0.4. This means that Navigation Safe Args will no longer be compatible with Android Studio versions prior to 7.0, but is now compatible with Android Gradle Plugin 7.1.0 and higher. (I41c88, b/213086135, b/207670704)

Version 2.4.0

Version 2.4.0

January 26, 2022

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

Important changes since 2.3.0

• All Navigation artifacts have been rewritten in Kotlin. This has improved the nullability of classes using generics (such as NavType subclasses). All Kotlin extension functions that used to be part of the -ktx artifacts have been moved to their respective main artifacts. The -ktx artifacts will continue to be published, but are completely empty.
• The navigation-fragment artifact now contains a prebuilt implementation of a two pane layout via the new AbstractListDetailFragment. This fragment uses a SlidingPaneLayout to manage a list pane (which your subclass provides) and a detail pane, which uses a NavHostFragment as its implementation, as seen in our example implementation.
• The currentBackStackEntryAsFlow() method on NavController provides a Flow that emits whenever the current NavBackStackEntry changes. This flow can be used as an alternative to manually managing an OnDestinationChangedListener.
• NavController now offers the ability to retrieve a list of all visible NavBackStackEntry instances as a StateFlow via the experimental visibleEntries property.
• It is now possible to extend the NavType class to create custom NavTypes. Custom types are supported only when building your navigation graph programmatically, such as via the Navigation Graph Kotlin DSL.

• Navigation now providesfindStartDestination() and getHierarchy() APIs that can be used to help implement custom NavigationUI. findStartDestination() is an extension function on NavGraph that will locate the actual start destination that will be displayed when you navigate to the graph, even if the startDestination is itself a nested NavGraph. getHierarchy() is a function on NavDestination that can be used to verify if a given destination is within the hierarchy of another.

  val matchingRoute: Boolean = destination.hierarchy.any { it.route == routeToFind }
  

• NavigationUI methods that took a BottomNavigationView have been updated to instead take its superclass introduced in Material 1.4.0, NavigationBarView. This allows these methods to be used with the NavigationRailView.

• When inflating an <action> element via XML, animation attributes can use attributes pulled from your theme using the app:enterAnim="?attr/transitionEnter" syntax.

• Safe Args now generates a fromSavedStateHandle() method for each NavArgs class. (#122, b/136967621)

  class HomeViewModel(savedStateHandle: SavedStateHandle) : ViewModel() {
    // Create a HomeDestinationArgs class with type safe accessors for each argument
    // defined on your destination
    private val args = HomeDestinationArgs.fromSavedStateHandle(savedStateHandle)
  }
  

Navigation Routes and the Kotlin DSL

Previous versions of Navigation relied on each destination having a constant integer ID that would uniquely identify it from its sibling destinations and allow you to navigate() to that destination either directly or via an action. While this continues to be valid and useful, particularly in cases where you are defining your navigation graph in XML and can use auto-generated R.id constants or Safe Args (which uses those constants to generate code at build time), this system of unique integers did not capture the semantic meaning and expressiveness needed to support fully dynamic graphs built programmatically at runtime via the Navigation Kotlin DSL.

This release introduces a new option for uniquely identifying a destination in a navigation graph by its route. A route is a String that defines the unique path to a destination. All Kotlin DSL methods that took a destination ID are now deprecated and replaced with an equivalent API that takes a route.

Each route should be treated as the ‘path’ part of a Uri that defines that destination, e.g., home, profile/{userId}, profile/{userId}/friends, etc. When the identity of a destination is associated with a specific piece of content, those dynamic arguments should be part of the route, following the same rules as implicit deep links.

All NavController APIs that used to only take an ID now have an overload that takes a route String. This includes navigate(), popBackStack(), popUpTo(), and getBackStackEntry().

This has had some API implications:

• The popUpTo Kotlin property on the Kotlin DSL has been deprecated in favor of popUpToId.
• The getStartDestination() API has been deprecated in favor of getStartDestinationId().

Unlike when navigating by ID, navigating by route follows the same rules as implicit deep links in that you can directly navigate to any destination in any nested graph, ensuring that these routes are usable in multi-module projects without explicitly adding an externally visible deep link to each destination.

Navigation Compose

The navigation-compose artifact provides integration between the Navigation Component and Jetpack Compose. It uses @Composable functions as the destinations in your application.

This release provides:

• A NavHost composable that allows you to construct your navigation graph via a Kotlin DSL, using composable and dialog destinations, plus support for optional Navigators such as those from Accompanist Navigation Material.
• Mandatory support for crossfading between destinations. Accompanist Navigation Animation can be used to control the enter and exit transitions using experimental Compose APIs.
• Scoping of a Lifecycle to each composable destination. Each destination only reaches the RESUMED state when any entering transitions finish and immediately drops to STARTED when any exiting transitions start, thus allowing you to avoid all IllegalStateException and multi-touch issues by only triggering a navigate call when the Lifecycle is RESUMED.
• Scoping of ViewModel (via the viewModel() API of Lifecycle ViewModel Compose 2.4.0 or hiltViewModel() of Hilt Navigation Compose 1.0.0 at the destination level, providing a scope that survives configuration changes and being on the back stack (when your Composable content is otherwise disposed) and a signal in the ViewModel’s onCleared() that indicates the permanent disposal and cleaning up of state associated with that NavBackStackEntry.
• Scoping of rememberSaveable state at a destination level, ensuring that all composable state is saved and restored automatically when you return to a destination.
• Full support for saving and restoring the state of the NavController and its destination’s state after process death and recreation.
• Automatic integration with the system back button.

• Support for passing arguments, attaching deep links to destinations, and returning a result to previous destinations.

• Compose specific helpers in rememberNavController() and currentBackStackEntryAsState() to allow hoisting state and connecting the NavController to composables outside of the NavHost (such as a bottom navigation bar).

val navController = rememberNavController()
Scaffold { innerPadding ->
    NavHost(navController, "home", Modifier.padding(innerPadding)) {
        composable("home") {
            // This content fills the area provided to the NavHost
            HomeScreen()
        }
        dialog("detail_dialog") {
            // This content will be automatically added to a Dialog() composable
            // and appear above the HomeScreen or other composable destinations
            DetailDialogContent()
        }
    }
}

See the Compose Navigation guide for more information.

Multiple back stacks

The NavController is responsible for managing the back stack of destinations, adding destinations to the back stack when you navigate() to them and removing them when you call popBackStack() or trigger the system back button. The existing NavOptions class and the integration into <action> elements in the navigation graph XML has been expanded to support saving and restoring the back stack.

As part of this change, the NavigationUI methods of onNavDestinationSelected(), BottomNavigationView.setupWithNavController() and NavigationView.setupWithNavController() now automatically save and restore the state of popped destinations, enabling support for multiple back stacks without any code changes. When using Navigation with Fragments, this is the recommended way to integrate with multiple back stacks.

The underlying APIs for saving and restoring the state are exposed via a number of surfaces:

• In Navigation XML, the <action> element can now use the boolean attributes of app:popUpToSaveState and app:restoreState to save the state of any destinations popped via app:popUpTo and restore the state associated with the destination passed as the app:destination:

  <action
    android:id=”@+id/swap_stack”
    app:destination=”@id/second_stack”
    app:restoreState=”true”
    app:popUpTo=”@id/first_stack_start_destination”
    app:popUpToSaveState=”true” />
  

• In the navOptions Kotlin DSL, you can add the restoreState boolean property and the saveState boolean property on the popUpTo builder:

  // Use the navigate() method that takes a navOptions DSL Builder
  navController.navigate(selectedBottomNavRoute) {
    launchSingleTop = true
    restoreState = true
    popUpTo(navController.graph.findStartDestination().id) {
      saveState = true
    }
  }
  

• In manually building a NavOptions object via the NavOptions.Builder, you can use the setRestoreState() and new overload to setPopUpTo() that takes an additional saveState parameter.

  NavOptions navOptions = new NavOptions.Builder()
    .setLaunchSingleTop(true)
    .setRestoreState(true)
    .setPopUpTo(NavGraph.findStartDestination(navController.getGraph()).getId(),
      false, // inclusive
      true) // saveState
    .build();
  navController.navigate(selectedBottomNavId, null, navOptions);
  

• Programmatic calls to popBackStack() can now include an additional saveState parameter.

• You can use the clearBackStack() method to clear any state that was saved with popBackStack() or popUpToSaveState.

In all cases, the NavController will save and restore the state of each NavBackStackEntry, including any navigation destination scoped ViewModel instances. The Navigator APIs have been updated to enable each Navigator to support saving and restoring their own state.

Behavior changes

• NavDeepLinkBuilder now adds PendingIntent.FLAG_IMMUTABLE to the PendingIntent returned by createPendingIntent(), ensuring that this API works as expected when targeting Android 12.
• Navigation now depends on Lifecycle 2.3.1 and now marks setGraph(), popBackStack(), navigateUp(), and navigate(), the methods that update the NavBackStackEntry Lifecycle, as @MainThread, aligning Navigation with the main thread enforcement introduced in Lifecycle 2.3.0.
• Deep links now verify that all required arguments (those without default values) are present in the Uri.
• NavDeepLink parsed arguments now consider pound signs in the same way as question marks as a separator between path segments, preventing an argument from spanning across the pound sign.
• When generating actions, Kotlin code generated from Safe Args now puts arguments without default values before those with default values as parameters.
• When generating arguments, Safe Args now puts parameters without default values before those with default values.
• Safe-Args now depends on Android Gradle Plugin 4.2.0. This means you should no longer get the using applicationIdTextResource warning.

Known issues

• Fixed in Navigation 2.5.0-alpha01: accessing a ViewModel created via by navGraphViewModels() from a Fragment's onCreate() will fail with an IllegalStateException. (b/213504272)
• Fixed in Navigation 2.5.0-alpha01: Safe Args 2.4.0 is incompatible with Android Gradle Plugin 7.1.0 and higher. (b/213086135)
• Deep linking with multiple nested nav graphs doesn't correctly create the full backstack. (b/214383060)

Version 2.4.0-rc01

December 15, 2021

androidx.navigation:navigation-*:2.4.0-rc01 is released. Version 2.4.0-rc01 contains these commits.

Behavior changes

• NavDeepLink parsed arguments now consider pound signs in the same way as question marks as a separator between arguments. (I21309, b/180042703)

Bug Fixes

• Deeplinks will no longer ignore arguments with values that are the same as the name of the placeholder. (If8017, b/207389470)
• NavController will no longer crash when popping a nested destination using transitions after the NavController has been restored. (I0f7c9, b/205021623)
• The error message when using an invalid startDestination will now default to the start destination's route if one is available. (I86b9d, b/208041894)

Navigation Compose Bug Fixes

• Fixed potential crash caused by fast switching between the start destination and another destination using bottom nav menu items. (Ic8976, b/208887901)
• Dialog destination are now properly restored on top of the screen after config changes or process death. (I4c0dc, b/207386169)
• Fixed an issue where attempting to retrieve a ViewModel from a dialog’s NavBackStackEntry would fail when the dialog was dismissed. (I6b96d, b/206465487)
• Fixed an issue when using activity destinations with Navigation Compose's NavHost that would result in infinite recompositions. (I8f64c)
• Fixed a leak in Navigation Compose where it was holding on to a reference of the old activity after a config change or process death. (I4efcb, b/204905432)

Safe Args Bug Fixes

• SafeArgs no longer crashes when attempting to restore custom parcelable arrays after process death. (I618e8, b/207315994)
• Fixed a bug in safe args that would not allow boolean arrays to have a null value. (I8c396, b/174787525)

Version 2.4.0-beta02

November 3, 2021

androidx.navigation:navigation-*:2.4.0-beta02 is released. Version 2.4.0-beta02 contains these commits.

API Changes

• The handling of both explicit and implicit deep links now automatically adds the saveState flag when navigating to another graph, ensuring that code such as NavigationUI.setupWithNavController and code using multiple back stacks works as expected. (Ic8807)

Behavior Changes

• Deep link patterns are now compiled lazily in NavDeepLink instead of during inflation. This should improve the inflation time of navigation graphs that include deep links. (b8d257, b/184149935)

Bug Fixes

• Fixed an issue where NavBackStackEntries were being pushed down to Lifecycle.State.CREATED after moving to Lifecycle.State.STARTED when the NavHost is added directly to the activity's setContent(). (Ia5ac1, b/203536683)
• Fixed a race condition where popping a DialogFragment destination off of the back stack before the dialog was actually shown would not actually dismiss the dialog, resulting in a crash when the errant dialog was manually dismissed by the user. (I687e5)
• Fixed an issue where the onNavDestinationSelected API on NavigationUI would return true even if you didn't actually navigate() to that navigation graph. It now uses the same logic used internally by setupWithNavController to only select the MenuItem associated with the current destination using the hierarchy of the destination. (I2b053)

Version 2.4.0-beta01

October 27, 2021

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

New Features

• You can now use by navGraphViewModel with a route as an alternative to using an ID so as to better support using the Navigation Kotlin DSL with Fragments. (I901e3, b/201446416)

API Changes

• The visibleEntries API is now experimental. (I93f6f)

Bug Fixes

• ViewModels will no longer be destroyed when transitions are interrupted by navigating back and forth between the same screens (Id52d8, b/200817333)
• Nullable NavDeepLink arguments no longer require a default value when adding deep links to NavDestinations. (I5aad4, b/201320030)
• NavBackStackEntries now with different Lifecycles are not longer considered equal. This means NavHost will properly recompose all destinations when doing navigation with singleTop and when reselecting bottom menu items. (I1b351, b/196997433)
• Fixed an issue with AbstractListDetailFragment that caused the layout_width and layout_weight attributes on the list pane returned by onCreateListPaneView() to be incorrectly handled or ignored. (f5fbf3)
• The visual state of dialog destinations now correctly stays in sync with the DialogFragmentNavigator's state. This means that manually calling the asynchronous dismiss() API for DialogFragment now properly clears all dialog destinations above the now dismissed dialog. This does not affect cases where you use popUpTo or popBackStack() to dismiss your dialog. (I77ba2)
• AbstractAppBarOnDestinationChangedListener now has clearer error messaging for onDestinationChanged(). (Ie742d)

Version 2.4.0-alpha10

September 29, 2021

androidx.navigation:navigation-*:2.4.0-alpha10 is released. Version 2.4.0-alpha10 contains these commits.

New Features

• NavController now offers the ability to retrieve a list of all visible NavBackStackEntry instances via the visibleEntries StateFlow (Ia964e)
• rememberNavController() now takes a optional set of Navigator instances that will be added to the returned NavController to better support optional Navigators such as those from Accompanist Navigation Material. (I4619e)

Bug Fixes

• Dynamic Navigation will no longer crash when the Activity is recreated. (Ifa6a3, b/197942869)
• Fixed an issue with the system back button that occurs only after popping back to a composable destination that contains a NavHost. (3ed148, b/195668143)
• SafeArgs now generates the arguments for fromBundle() and fromSavedStateHandle() in the proper parameter order. (I824a8, b/200059831)

Version 2.4.0-alpha09

September 15, 2021

androidx.navigation:navigation-*:2.4.0-alpha09 is released. Version 2.4.0-alpha09 contains these commits.

New Features

• You can now use the clearBackStack() method to clear any state that was saved with popBackStack() or popUpToSaveState. (I80a0f)
• You can now pass in a list of arguments and/or deep links to your nested navigation graph's builder and they will automatically be added to the resulting graph. (I8a470, b/182545357)

API Changes

• The navArgument Kotlin DSL function is now part of navigation-common instead of navigation-compose. This will require updating imports to continue to use this function. (I1d095)

Behavior Changes

• When generating arguments, Safe Args now puts parameters without default values before those with default values. (I89709, b/198493585)

Bug Fixes

• When using Navigation Compose, NavGraphs will only be DESTROYED once all their children are DESTROYED. (I86552, b/198741720)
• Nullable NavDeepLink arguments no longer require a default value. (Ia14ef, b/198689811)
• Calling setGraph() with a new graph will now also clear any saved back stacks in addition to its previous behavior of popping the back stack. (I97f96)
• Fixed an issue where OnDestinationChangedListener instances and the currentBackStackEntryFlow were not notified when using launchSingleTop. (Iaaebc)

Dependency Updates

• Navigation Compose now depends on Activity Compose 1.3.1. (I05829)
• Navigation Compose now depends on Lifecycle ViewModel Compose 2.4.0-beta01. (Ib86a3)

Version 2.4.0-alpha08

September 1, 2021

androidx.navigation:navigation-*:2.4.0-alpha08 is released. Version 2.4.0-alpha08 contains these commits.

New Features

• It is now possible to extend the NavType class to create custom NavTypes. Custom types are supported only when building your navigation graph programmatically, such as via the Navigation Graph Kotlin DSL. (I78440, b/196871885)

Behavior Changes

• When generating actions, Kotlin code generated from Safe Args now puts arguments without default values before those with default values as parameters. (Idb697, b/188855904)
• Deep links now verify that all required arguments (those without default values) are present in the Uri. (#204, b/185527157)

Bug Fixes

• Using getBackStackEntry and previousBackStackEntry inside composable(), in conjunction with remember(), will no longer cause an exception for no destination being on the back stack. (I75138, b/194313238)
• Navigation Compose now properly recomposes when changing back stack arguments and using launchSingleTop=true. (Iebd69, b/186392337)
• There will no longer be an ArrayIndexOutOfBoundsException when calling setGraph with a graph with 13 or 29 destinations. (I1a9f1, b/195171984)
• The SafeArgs java generator should no longer cause lint warnings when generating Args classes. (I1a666, b/185843837)

External Contribution

• Thanks ospixd for ensuring that deep links verify that all required arguments (those without default values) are present in the Uri. (#204, b/185527157)

Version 2.4.0-alpha07

August 18, 2021

androidx.navigation:navigation-*:2.4.0-alpha07 is released. Version 2.4.0-alpha07 contains these commits.

Bug Fixes

• Navigation Compose now properly saves state after configuration changes and when changing graphs while using the multiple back stack feature. (If5a3d, b/195141957)
• Re-selecting the same tab when using navigation compose with multiple back stacks will no longer result in a blank screen. (I860dc, b/194925622)
• NavHost now observes for changes in the Lifecycle.State of NavBackStackEntrys which means using a NavHost in a fragment now will properly be recomposed as the lifecycle changes instead of resulting in a blank screen. (I4eb85, b/195864489)
• Fixed an issue where dismissing a DialogFragment would not correctly update the NavController state after recreating your activity (i.e., after a configuration change). (Icd72b)
• Fixed an issue where popping a dialog destination would not update the NavController's system back button handling, potentially causing the NavController to intercept the back button even though it does not have any back stack to pop. (If3b34)
• Safe-args now automatically generates a toSavedStateHandle method for arguments which can be used to test your ViewModel code. (If1e2d, b/193353880)

Version 2.4.0-alpha06

August 4, 2021

androidx.navigation:navigation-*:2.4.0-alpha06 is released. Version 2.4.0-alpha06 contains these commits.

API Changes

• The requireSlidingPaneLayout() and requireDetailPaneNavHostFragment() methods on AbstractListDetailFragment have been renamed to getSlidingPaneLayout() and getDetailPaneNavHostFragment(), respectively. (I34a08)

Behavior Changes

• When navigating with animations (like Crossfade), the new destination’s Lifecycle will now only reach the RESUMED when the animation completes. (If0543, b/172112072, b/194301889)
• Navigation Compose's NavHost now sets the graph as part of the first composition. (Ieb7be)

Bug Fixes

• Popping the last destination of a navigation graph no longer throws a ClassCastException. (If0543, b/172112072, b/194301889)
• Fixed a NullPointerException that would occur when adding a deep link without a Uri and navigating via a route or deep link. (938a0c, b/193805425)
• Fixed an issue in Navigation Compose where a deep linked NavBackStackEntry would not reach the RESUMED state. (I192c5)
• Fixed an issue where popping a dialog destination would not update the NavController's system back button handling, potentially causing the NavController to intercept the back button even though it does not have any back stack to pop. (aosp/1782668)

Version 2.4.0-alpha05

July 21, 2021

androidx.navigation:navigation-*:2.4.0-alpha05 is released. Version 2.4.0-alpha05 contains these commits.

Behavior Changes

• Navigation Compose’s NavHost now always uses Crossfades when navigating through destinations. (I07049, b/172112072)
• You can now make changes to the graph of a NavHost. Graphs with the same startDestination and destinations in the graph will be considered equal and will not clear the NavController back stack. (I0b8db, b/175392262)

Bug Fixes

• Fixed a NoSuchElementException when calling popBackStack() from within a LifecycleObserver attached to a NavBackStackEntry caused by reentrant updates to the NavController's state. (I64621)
• AbstractListDetailFragment now allows SlidingPaneLayout to be completely stripped from your APK when AbstractListDetailFragment is not used. (I611ad)
• NavGraph and NavDestination now override the equals method so two objects with the same values will be considered equal. (I166eb, b/175392262)

Version 2.4.0-alpha04

July 1, 2021

androidx.navigation:navigation-*:2.4.0-alpha04 is released. Version 2.4.0-alpha04 contains these commits.

New Features

• The navigation-fragment artifact now contains a prebuilt implementation of a two pane layout via the new AbstractListDetailFragment. This fragment uses a SlidingPaneLayout to manage a list pane (which your subclass provides) and a detail pane, which uses a NavHostFragment as its implementation, as seen in our example implementation. (Iac4be, b/191276636)
• The NavHost of the navigation-compose artifact now supports dialog destinations in addition to composable destinations. These dialog destinations will each be shown within a Composable Dialog, floating above the current composable destination. (I011d0)

val navController = rememberNavController()
    Scaffold { innerPadding ->
        NavHost(navController, "home", Modifier.padding(innerPadding)) {
            composable("home") {
                // This content fills the area provided to the NavHost
                HomeScreen()
            }
            dialog("detail_dialog") {
                // This content will be automatically added to a Dialog() composable
                // and appear above the HomeScreen or other composable destinations
                DetailDialogContent()
            }
        }
    }

API Changes

• The add function in NavigatorState has been renamed to push. All current calls to add() will need to be changed to push(). (Ie89fc, b/172112072)
• Custom Navigator instances can now use the pushWithTransaction and popWithTransition APIs on NavigatorState to push or pop a destination asynchronously. Note that this APIs are not yet used by any of the included navigators. (Ic4d7c, b/172112072)

Behavior Changes

• NavDeepLinkBuilder now adds PendingIntent.FLAG_IMMUTABLE to the PendingIntent returned by createPendingIntent(), ensuring that this API works as expected when targeting Android 12. (If8c52)

Bug Fixes

• Fixed an issue with <include-dynamic> where arguments passed to the graph would not be correctly passed to the dynamically included graph. (I3e115)
• Fixed a NullPointerException when navigating to a destination using a string[] argument with a default value of @null. (I1fbe8)
• Add ProGuard rules for @Navigator.Name, fixing issues when using R8 3.1 full mode. (I2add9, b/191654433)
• SafeArgs will no longer fail when building your app with Kotlin versions before 1.5.0. (Icd1ff, b/190739257)

Version 2.4.0-alpha03

June 16, 2021

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

Bug Fixes

• Fixed an issue where two navigate() calls were needed to navigate to an included dynamic graph. (I7785c, b/188859835)
• Fixed a regression introduced in Navigation 2.4.0-alpha01 where setupActionBarWithNavController() would not properly remove the Up icon when you are on a top level destination. (I5d443, b/189868637)
• Fixed an IllegalStateException when calling popBackStack() after previously popping the root graph of the NavController. (I2a330, b/190265699)
• ProGuard rules for by navArgs() now properly apply when using navigation-common or any artifacts that depend on it. (I68800, b/190082521)
• An OnDestinationChangedListener that calls navigate() the first time it receives a callback now properly get a second callback with the destination it navigated to. (Ie5f9e, b/190228815)
• Safe Args no longer crashes when using it with dynamic feature modules and AGP 7.0+. (I69518, b/189966576)

Known Issue

• Safe Args will fail with an Unable to find method ‘’java.lang.String kotlin.text.CarsKt.titleCase(char, java.util.Locale)’’ error when using Gradle 6.7.0 due to a dependency on an older version of Kotlin. This can be worked around by updating to use Gradle 7.0. (b/190739257)

Version 2.4.0-alpha02

June 2, 2021

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

New Features

• Routes are now supported for Activity, Fragment and Dialog destinations, as well as throughout the DynamicNavigation Kotlin DSL. (Ib5544, Ia617b, I22f96, b/188914648, b/188901565)
• NavigationUI has temporarily added experimental APIs to allow opting out of saving your state. While always saving the state is the correct behavior, there are still uses of deprecated libraries (i.e. retained fragments), that cannot be supported when saving the state so this gives an opportunity for apps to slowly convert away from any unsupported APIs. (Idf93c)

• Navigation now providesfindDestination() and getHierarchy() APIs that can be used to help implement custom NavigationUI. findDestination() is an extension function on NavGraph that will locate a destination within the graph. getHierarchy() is a function on NavDestination that can be used to verify if a given destination is within the hierarchy of another.(I2932f, b/188183365)

  val matchingRoute: Boolean = destination.hierarchy.any { it.route == routeToFind }
  

• NavigationUI methods that took a BottomNavigationView have been updated to instead take its superclass introduced in Material 1.4.0, NavigationBarView. This allows these methods to be used with the NavigationRailView. (Ib0b36, b/182938895)

• When inflating an <action> element via XML, animation attributes can use attributes pulled from your theme using the app:enterAnim="?attr/transitionEnter" syntax. (I07bc1, b/178291654)

API Changes

• Kotlin DSL builders that use an ID have been deprecated and should be replaced with builders that use routes (I85b42, b/188816479) (I9f58f, b/188816479)

Bug Fixes

• DialogFragmentNavigator now uses the NavigatorState.pop() API to inform the NavController when a dialog is dismissed by hitting the system back button or clicking outside of it, ensuring that the NavController state is always in sync with the Navigator's state. (I2ead9)

• Navigation no longer gives a ConcurrentModificationException when using manipulating the list of OnDestinationChangedListeners from with an onDestinationChanged callback. (Ib1707, b/188860458)

• Safe Args no longer crashes when attempting to generate direction properties in Kotlin. (Id2416, b/188564435)

• The setId method on NavDestination is now properly annotated with @IdRes, so it only accepts resource ids. (I69b80)

• The int parameter of findNode is now resId instead of resid. (I7711d)

Dependency Update

• Safe-Args now depends on Android Gradle Plugin 4.2.0. This means you should no longer get the using applicationIdTextResource warning. (I6d67b, b/172824579)

Version 2.4.0-alpha01

May 18, 2021

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

New Features

• The currentBackStackEntryAsFlow() method on NavController provides a Flow that emits whenever the current NavBackStackEntry changes. This flow can be used as an alternative to manually managing an OnDestinationChangedListener. (I19c4a, #89, b/163947280)

Multiple back stacks

The NavController is responsible for managing the back stack of destinations, adding destinations to the back stack when you navigate() to them and removing them when you call popBackStack() or trigger the system back button. The existing NavOptions class and the integration into <action> entries in the navigation graph XML has been expanded to support saving and restoring the back stack. (b/80029773)

As part of this change, the NavigationUI methods of onNavDestinationSelected(), BottomNavigationView.setupWithNavController() and NavigationView.setupWithNavController() now automatically save and restore the state of popped destinations, enabling support for multiple back stacks without any code changes. When using Navigation with Fragments, this is the recommended way to integrate with multiple back stacks. (Ie07ca)

The underlying APIs for saving and restoring the state are exposed via a number of surfaces:

• In Navigation XML, the <action> element can now use the boolean attributes of app:popUpToSaveState and app:restoreState to save the state of any destinations popped via app:popUpTo and restore the state associated with the destination passed as the app:destination:

  <action
    android:id=”@+id/swap_stack”
    app:destination=”@id/second_stack”
    app:restoreState=”true”
    app:popUpTo=”@id/first_stack_start_destination”
    app:popUpToSaveState=”true” />
  

• In the navOptions Kotlin DSL, you can add the restoreState boolean property and the saveState boolean property on the popUpTo builder:

  // Use the navigate() method that takes a navOptions DSL Builder
  navController.navigate(selectedBottomNavRoute) {
    launchSingleTop = true
    restoreState = true
    popUpTo(navController.graph.startDestinationId) {
      saveState = true
    }
  }
  

• In manually building a NavOptions object via the NavOptions.Builder, you can use the setRestoreState() and new overload to setPopUpTo() that takes an additional saveState parameter.

  NavOptions navOptions = new NavOptions.Builder()
    .setLaunchSingleTop(true)
    .setRestoreState(true)
    .setPopUpTo(navController.getGraph().getStartDestinationId(),
      false, // inclusive
      true) // saveState
    .build();
  navController.navigate(selectedBottomNavId, null, navOptions);
  

• Programmatic calls to popBackStack() can now include an additional saveState parameter.

In all cases, the NavController will save and restore the state of each NavBackStackEntry, including any navigation destination scoped ViewModel instances. The Navigator APIs have been updated to enable each Navigator to support saving and restoring their own state.

The ComposeNavigator used for composable destinations in Navigation Compose and the FragmentNavigator and DynamicFragmentNavigator used for <fragment> destinations in Navigation with Fragments have both been updated to use the new Navigator APIs and support saving and restoring state.

Navigation Routes

A route is a String that uniquely identifies a destination. While previously only used in Navigation Compose, this concept has now graduated to become a part of the core Navigation APIs. This provides an alternative to using integer IDs when constructing your graph through the Navigation Kotlin DSL. (b/172823546)

All APIs that used to only take an ID now have an overload that takes a route String. This includes navigate(), popBackStack(), popUpTo(), and getBackStackEntry().

This has had some API implications:

• The popUpTo kotlin property on the Kotlin DSL has been deprecated in favor of popUpToId. (I59c73, b/172823546)
• The getStartDestination() API has been deprecated in favor of getStartDestinationId(). (I0887f, b/172823546)

For developers upgrading from previous versions of Navigation Compose to Navigation Compose 2.4.0-alpha01, this means that the following imports on extension methods are no longer necessary and should be removed:

import androidx.navigation.compose.navigation
import androidx.navigation.compose.createGraph
import androidx.navigation.compose.getBackStackEntry
import androidx.navigation.compose.navigate
import androidx.navigation.compose.popUpTo

The KEY_ROUTE argument has been replaced with the route property on NavDestination, allowing you to call navBackStackEntry.destination.route directly.

API Changes

• All Navigation artifacts have been rewritten in Kotlin. This has improved the nullability of classes using generics (such as NavType subclasses). All Kotlin extension functions that used to be part of the -ktx artifacts have been moved to their respective main artifacts. The -ktx artifacts will continue to be published, but are completely empty. (b/184292145)
• NavDeepLinkBuilder now supports adding multiple distinct destinations to the generated back stack. (I3ee0d, b/147913689)
• Add factory functions for DynamicNavHostFragment (Icd515, b/175222619)
• The unique ID of a NavBackStackEntry is now exposed as part of its public API. (Ie033a)
• The name and argument fields and destructuring functions of NamedNavArgument are now public. (#174, b/181320559)
• Introduced a new NavBackStackEntry#provideToCompositionLocals extension that provides the NavBackStackEntry to the relevant composition locals. (#175, b/187229439)

Safe Args

• Safe Args now generates a fromSavedStateHandle() method for each NavArgs class. (#122, b/136967621)

  class HomeViewModel(savedStateHandle: SavedStateHandle) : ViewModel() {
    // Create a HomeDestinationArgs class with type safe accessors for each argument
    // defined on your destination
    private val args = HomeDestinationArgs.fromSavedStateHandle(savedStateHandle)
  }
  

• Updated Safe Args to depend on KotlinPoet 1.8.0. (#172, b/183990444)

Behavior Changes

• Navigation now depends on Lifecycle 2.3.1 and now marks setGraph(), popBackStack(), navigateUp(), and navigate(), the methods that update the NavBackStackEntry Lifecycle, as @MainThread, aligning Navigation with the main thread enforcement introduced in Lifecycle 2.3.0. (b/171125856)
• Parsing Enum arguments from deep links is now case insensitive, allowing a deep link like http://www.example.com/red to match a www.example.com/{color} deep link even when the enum has the value of RED. (#152, b/135857840)

Compose Compatibility

• androidx.navigation:navigation-compose:2.4.0-alpha01 is only compatible with Compose version 1.0.0-beta07 and above.

Bug Fixes

• Fixed an issue where trailing argument placeholders would take precedence over deep links that have a matching exact suffix. (#153, b/184072811)
• NavHostFragment now supports custom Navigators that use the same @Navigator.Name("dialog") as the default DialogFragmentNavigator. (Ib1c2c, b/175979140)
• Improved the behavior of NavigatorProvider#addNavigator to ensure that calling it repeatedly with the same instance does not cause issues. (#176, b/187443146)

External Contributions

• Thanks simonschiller for building support for Safe Args generating a fromSavedStateHandle() method for each NavArgs class. (#122, b/136967621)
• Thanks Bradleycorn for making parsing Enum arguments from deep links case insensitive. (#152, b/135857840)
• Thanks osipxd for fixing an issue where trailing argument placeholders would take precedence over deep links that have a matching exact suffix. (#153, b/184072811)
• Thanks tatocaster for updating Safe Args to depend on KotlinPoet 1.8.0. (#172, b/183990444)
• Thanks jossiwolf for making the name and argument fields and destructuring functions of NamedNavArgument public. (#174, b/181320559)
• Thanks jossiwolf for introducing a new NavBackStackEntry#provideToCompositionLocals extension that provides the NavBackStackEntry to the relevant composition locals. (#175, b/187229439)
• Thanks jossiwolf for improved the behavior of NavigatorProvider#addNavigator to ensure that calling it repeatedly with the same instance does not cause issues. (#176, b/187443146)

Navigation Compose Version 1.0.0

Version 1.0.0-alpha10

April 7, 2021

androidx.navigation:navigation-compose:1.0.0-alpha10 is released. Version 1.0.0-alpha10 contains these commits.

API Changes

• NavHost now accepts a Modifier, which is passed down to the composable container that wraps the destination composables. (I85aca, b/175125483)

Bug Fixes

• NavHost now works even when an OnBackPressedDispatcherOwner is not found, such is the case when previewing the NavHost. (I7d8b4)
• Navigation Compose now depends on Navigation 2.3.5, fixing an issue when using BackHandler inside a NavHost destination. (I7e63b, b/182284739)

Version 1.0.0-alpha09

March 10, 2021

androidx.navigation:navigation-compose:1.0.0-alpha09 is released. Version 1.0.0-alpha09 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)

Bug Fixes

• Navigation Compose now depends on Navigation 2.3.4 which includes the fix for attempting to set the same ViewModelStore object after the graph has been set. (I65c24, b/177825470)

Version 1.0.0-alpha08

February 24, 2021

androidx.navigation:navigation-compose:1.0.0-alpha08 is released. Version 1.0.0-alpha08 contains these commits.

New Features

• NavHost now populates the LocalSavedStateRegistryOwner CompositionLocal with that destination’s NavBackStackEntry, ensuring that any state directly saved into the SavedStateRegistry will be saved and restored alongside the destination. (I435d7, b/179469431)

Version 1.0.0-alpha07

February 10, 2021

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

Dependency Updates

• Navigation Compose now depends on Lifecycle ViewModel Compose 1.0.0-alpha01 to provide viewModel() support to composable destinations. (I7a374)
• NavHost now uses the new LocalOnBackPressedDispatcherOwner from Activity-Compose 1.3.0-alpha01 to get the OnBackPressedDispatcher that is set on the NavController. (I65b12)

Version 1.0.0-alpha06

January 28, 2021

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

API Changes

• Added a getBackStackEntry(route: String) extension method on NavController that returns the associated NavBackStackEntry. (If8931)

Version 1.0.0-alpha05

January 13, 2021

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

Updated to depend on Compose 1.0.0-alpha10.

Version 1.0.0-alpha04

December 16, 2020

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

• Updated for compatibility with Compose 1.0.0-alpha09.

Version 1.0.0-alpha03

December 2, 2020

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

Bug Fixes

• Fixed an issue where popBackStack() and navigateUp() would not work after a configuration change or process death and recreation. (Icea47, b/173281473)
• Navigating to a nested graph within your NavHost now works properly. (I0948d, b/173647694)

Version 1.0.0-alpha02

November 11, 2020

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

API Changes

• Navigation compose now support NavOptions for using popUpTo and launchSingleTop operations (If96c3, b/171468994)
• Added a navigation function that takes a route instead of an ID that allows you to construct nested graphs in the Navigation Compose DSL. (I1661d)
• startDestination now comes before the route in the list of a parameters for a NavHost (Ie620e)
• You can now create a graph using the route as a start destination outside of a NavHost composable. (Iceb75)

Version 1.0.0-alpha01

October 28, 2020

android.navigation:navigation-compose:1.0.0-alpha01 is released. Version 1.0.0-alpha01 contains these commits.

New Features

The navigation-compose artifact provides integration between the Navigation Component and Jetpack Compose. It uses @Composable functions as the destinations in your application.

This initial release provides:

• A NavHost composable that allows you to construct your navigation graph via a Kotlin DSL.
• Scoping of lifecycle, ViewModel, and remembered state at the destination level.
• Automatic integration with the system back button.
• Support for passing arguments, attaching deep links to destinations, and returning a result to previous destinations.
• Compose specific helpers in rememberNavController() and currentBackStackEntryAsState() to allow hoisting state and connecting the NavController to composables outside of the NavHost (such as a bottom navigation bar).

See the Compose Navigation guide for more information.

Version 2.3.5

Version 2.3.5

April 7, 2021

androidx.navigation:navigation-*:2.3.5 is released. Version 2.3.5 contains these commits.

New Features

• When navigating using a NavDeepLinkRequest or Uri, you can now access the Uri, action, and mime type in the resulting destination by getting the intent from arguments via KEY_DEEP_LINK_INTENT, mirroring the functionality already available for external deep linking. (I975c3, b/181521877)

Bug Fixes

• OnBackPressedCallbacks added to a dispatcher with the NavBackStackEntry as the LifecycleOwner now properly intercept back after the Activity Lifecycle is STOPPED, then STARTED (Iff94f, b/182284739)
• Deep link domain parsing is now case insensitive, ensuring that www.example.com matches both www.example.com and www.Example.com. Note that query parameter names are still case sensitive. (#144, b/153829033)
• Fixed a NullPointerException that could occur when a destination has multiple non-nullable default arguments and you navigate to that destination while only overriding a subset of those arguments. (aosp/1644827)

Dependency Updates

• The Navigation Safe Args Gradle Plugin now depends on Kotlin Gradle Plugin 1.4.31. (aosp/1661058, b/181156413)

External Contribution

• Thanks bentrengrove for the pull request making deep link domain parsing case insensitive. (#144, b/153829033)

Version 2.3.4

Version 2.3.4

March 10, 2021

androidx.navigation:navigation-*:2.3.4 is released. Version 2.3.4 contains these commits.

New Features

• ReferenceType arguments can now be properly parsed when sent as part of a deeplink URI. This supports both the raw integer value as well as hex values prefixed by 0x. (#127, b/179166693)
• The android:defaultValue for an argument with app:argType="float" now supports integer default values, allowing you to use android:defaultValue="0"rather than requiring the use of 0.0. (#117, b/173766247)

Bug Fixes

• Fix stuck installation progress when using Navigation’s support for dynamic features. (Ib27a7, b/169636207)
• Calling setViewModelStore or setLifecycleOwner with the same object that has already been set will now be a no-op (Idf491, b/177825470)
• Safe-Args now adds suppress annotations on the proper methods when using java. (I8fbc5, b/179463137)

External Contributions

• Thanks JvmName for the pull request to ensure that ReferenceType arguments can now be properly parsed when sent as part of a deeplink URI. (#127, b/179166693)
• Thanks tatocaster for the pull request to allow the defaultValue for an argument with app:argType=”float” now supports integer default values. (#117, b/173766247)

Version 2.3.3

Version 2.3.3

January 27, 2021

androidx.navigation:navigation-*:2.3.3 is released. Version 2.3.3 contains these commits.

Bug Fixes

• There is no longer a crash when popping a NavBackStackEntry before its Lifecycle is moved to CREATED. (Ie3ba3)
• Fixed regression caused by b/171364502 where navigating to an activity with an animation resource value of 0 caused a ResourceNotFoundException. (I7aedb, b/176819931)

Version 2.3.2

Version 2.3.2

December 2, 2020

androidx.navigation:navigation-*:2.3.2 is released. Version 2.3.2 contains these commits.

Bug Fixes

• Fixed a regression in NavigationUI where using an <activity> destination with onNavDestinationSelected would fail to navigate to the Activity. (I22e34, b/171364502)
• Fixed an issue where navigation-dynamic-features-fragment would result in navigating to the newly installed destination multiple times. (aosp/1486056, b/169636207)
• Fixed an issue where default arguments would not be sent to OnDestinationChangedListener instances when using launchSingleTop. (I2c5cb)
• Fixed an issue where navigating to a nested navigation graph would not create a new graph instance on the back stack. (Ifc831)
• Fixed an issue where using navigate() with a popUpTo that removed the last destination in a navigation graph would not immediately destroy and remove the navigation graph itself from the back stack. (I910a3)
• Navigation SafeArgs now uses KotlinPoet version 1.7.2 which adds support for Kotlin's explicit API mode. (I918b5)
• NavHostFragment.findNavController(Fragment) now also checks the root decor view of a DialogFragment in addition to the existing checks of the Fragment hierarchy and Fragment's view hierarchy. This allows you to test dialog fragments that use Navigation with FragmentScenario and Navigation.setViewNavController(). (I69e0d)

Version 2.3.1

Version 2.3.1

October 14, 2020

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

New Features

• Default Animator resources have been added to Navigation UI and are recommended over the default animation resources. (b/167430145)
• NavOptions now overrides the hashcode and equals methods (b/161586466)
• Navigation now includes the current destination in the “No destination with ID” IllegalArgumentException, which should improve the developer debugging experience. (b/168311416)

Bug Fixes

• Safe Args will no longer wrap the return line, even if the generated argument class name is longer than 100 characters. (b/168584987)

Dependency Changes

• navigation-ui now depends on DrawerLayout 1.1.1, ensuring that NavigationUI is able to open the drawer even when using LOCK_MODE_LOCKED_CLOSED or LOCK_MODE_LOCKED_OPEN. (b/162253907)
• Safe Args now depends on KotlinPoet 1.6.0 (aosp/1435911)
• Safe Args now depends on AGP 4.0.1 (aosp/1442337)

Version 2.3.0

Version 2.3.0

June 24, 2020

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

Major changes since 2.2.0

• Feature Module integration: The navigation-dynamic-features-runtime and navigation-dynamic-features-fragment artifacts allow you to navigate to destinations that are defined in feature modules, automatically handling the installation of the feature modules as needed. See Navigate with feature modules for more information.
• Navigation Testing: The navigation-testing artifact provides a TestNavHostController that allows you to set the current destination and verify the back stack after navigation operations. See Test Navigation for more information.
• Returning a Result: The NavBackStackEntry associated with each destination on the Navigation back stack now allows you to access a SavedStateHandle suitable for storing small amounts of saved state that should be associated with a particular back stack entry. See Returning a result to the previous Destination for more information.
• NavigationUI support for Openable: All usages of DrawerLayout in NavigationUI have been replaced with the more generic Openable interface added in CustomView 1.1.0 and implemented by DrawerLayout in DrawerLayout 1.1.0.
• Action and Mime Type support in deep links: Deep linking has been expanded to support app:action and app:mimeType in addition to the app:uri previously available. NavController now supports navigating by any combination of these fields via the new NavDeepLinkRequest class. See Navigate using NavDeepLinkRequest for more information.

Known Issues

• Support for deep link actions and mime types is not yet available in Manifest Merger. Until that work is completed, any generated <intent-filter> elements from the <nav-graph> element in your manifest won't include your mime type in its <data> element or your custom <action>. You must manually add an appropriate <intent-filter> to your manifest.

Version 2.3.0-rc01

June 10, 2020

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

Bug Fixes

• Fixed a NullPointerException when replacing an instance of a destination with no arguments with another instance with arguments with singleTop. (b/158006669)
• All destination is unknown exceptions thrown by NavController now have additional debugging information to help determine the state of the NavController. (b/157764916)

Version 2.3.0-beta01

May 20, 2020

androidx.navigation:navigation-*:2.3.0-beta01 are released. Version 2.3.0-beta01 contains these commits.

Bug Fixes

• Fixed an issue where the Lifecycle of the NavBackStackEntry would not be properly updated after process death. (b/155218371)
• OnDestinationChangedListener instances registered before calling setGraph() are now properly sent the restored destination after a process death. (b/155218371)
• When using singleTop, the NavBackStackEntry now correctly has its arguments updated and the updated arguments are sent to all OnDestinationChangeListener instances. (b/156545508)

Dependency Updates

• The NavigationUI artifact now depends on CustomView 1.1.0-rc01 and DrawerLayout 1.1.0-rc01. (aosp/1309696)

Version 2.3.0-alpha06

April 29, 2020

androidx.navigation:navigation-*:2.3.0-alpha06 is released. (Version 2.3.0-alpha06 contains these commits.)

New Features

• Deep linking has been expanded to support app:action and app:mimeType in addition to the app:uri previously available. NavController now supports navigating by any combination of these fields via the new NavDeepLinkRequest class. (b/136573074, b/135334841)

API Changes

• Greatly expanded the Kotlin DSL support for Dynamic Navigation destinations. (b/148969800)

Bug Fixes

• Fixed an issue where deep link Intents would be ignored when using a nested start destination. (b/154532067)

Version 2.3.0-alpha05

April 15, 2020

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

New Features

• For dynamic graph includes using <include-dynamic>, you no longer need to specify app:graphPackage and a default one will be used by adding moduleName suffix to the applicationId after a dot. If you do need to customize your graphPackage, an ${applicationId} placeholder is now supported. (b/152696768)
• The Navigation Graph Kotlin DSL now exposes a defaultArguments Map for actions, mirroring the ability to set default values on <action> elements in Navigation XML files. (b/150345605)

Bug Fixes

• From Navigation 2.2.2: Fixed an IllegalStateException when deep linking to the start destination of your graph when you have multiple NavHostFragment instances in your Activity. (b/147378752)

Dependency updates

• Navigation now depends on Fragment 1.2.4. (aosp/1277325)
• Dynamic Navigation now depends on Play Core 1.7.2. (aosp/1282257)

Version 2.3.0-alpha04

March 18, 2020

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

New Features

• Added support for feature module activity and fragment destinations in the Navigation Kotlin DSL. (b/148969800)

API Changes

• The DynamicExtras class no longer uses a builder pattern and can now be constructed directly. (aosp/1253671)
• DynamicActivityNavigator now takes a Context in its constructor rather than an Activity. (aosp/1250252)

Bug Fixes

• NavigationUI no longer ignores empty labels (i.e., a destination with android:label=””) and now correctly sets the title to an empty string. (b/148679860)

Dependency Updates

• The Navigation Dynamic Features artifacts now depend on Play Core 1.6.5. (b/149556401)

Version 2.3.0-alpha03

March 4, 2020

androidx.navigation:navigation-*:2.3.0-alpha03 is released. Version 2.3.0-alpha03 contains these commits.

API Changes

• Instead of relying on the concrete DrawerLayout class, AppBarConfiguration now uses the Openable interface introduced in CustomView 1.1.0-alpha02 (which DrawerLayout implements as of DrawerLayout 1.1.0-alpha04), allowing you to use custom implementations of Openable with NavigationUI. (b/129030452)

Bug Fixes

• The navigation-common-ktx ProGuard rules now correctly only keep the NavArgs classes that are used rather than all NavArgs instances. (b/150213558)

Dependency changes

• Navigation has reverted its dependency on Core 1.2.0 and now depends on Core 1.1.0 to avoid forcing developers to move to a newer dependency when Navigation does not depend on any new APIs in Core 1.2.0.

Version 2.3.0-alpha02

February 19, 2020

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

New Features

• The NavBackStackEntry now allows you to access a SavedStateHandle suitable for storing small amounts of saved state that should be associated with a particular back stack entry. See Returning a result for an example use case. (b/79672220)

API Changes

• Convenience methods of getCurrentBackStackEntry() and getPreviousBackStackEntry() have been added to make it easier to retrieve a NavBackStackEntry for the current and previous destinations. (b/79672220)

Bug Fixes

• navigateUp() now passes the current destination’s arguments and the KEY_DEEP_LINK_INTENT to the previous destination when launching your app on your own task stack. (b/147456890)

Dependency changes

• Navigation now depends on Core 1.2.0.

Version 2.3.0-alpha01

February 5, 2020

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

New features

• The new navigation-testing artifact provides a TestNavHostController class. This class provides an alternative to using a mock NavController when testing Navigation that allows you to set the current destination and verify the back stack after navigation operations. (b/140884273)
• The new navigation-dynamic-features-fragment (and its transitive dependency, navigation-dynamic-features-runtime) allows you to include destinations or entire navigation graphs (via <include-dynamic>) from feature modules, providing seamless installation of on-demand feature modules when navigating to those destinations. See Navigate with feature modules for more information. (b/132170186)

Bug fixes

• From Navigation 2.2.1: Deep links without query parameters now correctly ignore any query parameters rather than appending them to trailing {argument} elements or not matching the deep link. (b/147447512)
• From Navigation 2.2.1: The navigation-ui ProGuard rules for DrawerArrowDrawable have been updated to ensure that android.enableJetifier=true is not required. (b/147610424)
• From Navigation 2.2.1: The navigation-common-ktx module now has a unique manifest package name instead of sharing the same manifest package name as navigation-runtime-ktx. (aosp/1141947)

Dependency updates

• From Navigation 2.2.1: Navigation 2.2.1 now depends on Lifecycle ViewModel SavedState 2.2.0 and Fragment 1.2.1.

Version 2.2.2

Version 2.2.2

April 15, 2020

androidx.navigation:navigation-*:2.2.2 are released. Version 2.2.2 contains these commits.

Bug Fixes

• Fixed an IllegalStateException when deep linking to the start destination of your graph when you have multiple NavHostFragment instances in your Activity. (b/147378752)
• NavigationUI no longer ignores empty labels (i.e., a destination with android:label=””) and now correctly sets the title to an empty string. This was previously released in Navigation 2.3.0-alpha04. (b/148679860)
• The navigation-common-ktx ProGuard rules now correctly only keep the NavArgs classes that are used rather than all NavArgs instances. This was previously released in Navigation 2.3.0-alpha03. (b/150213558

Dependency updates

• Navigation now depends on Fragment 1.2.4. (aosp/1277325)

Version 2.2.1

Version 2.2.1

February 5, 2020

androidx.navigation:navigation-*:2.2.1 is released. Version 2.2.1 contains these commits.

Bug fixes

• Deep links without query parameters now correctly ignore any query parameters rather than appending them to trailing {argument} elements or not matching the deep link. (b/147447512)
• The navigation-ui ProGuard rules for DrawerArrowDrawable have been updated to ensure that android.enableJetifier=true is not required. (b/147610424)
• The navigation-common-ktx module now has a unique manifest package name instead of sharing the same manifest package name as navigation-runtime-ktx. (aosp/1141947)

Dependency updates

• Navigation 2.2.1 now depends on Lifecycle ViewModel SavedState 2.2.0 and Fragment 1.2.1.

Version 2.2.0

Version 2.2.0

January 22, 2020

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

Important changes since 2.1.0

• NavBackStackEntry: You can now call NavController.getBackStackEntry(), passing in the ID of a destination or navigation graph on the back stack. The returned NavBackStackEntry provides a Navigation-driven LifecycleOwner, ViewModelStoreOwner (the same returned by NavController.getViewModelStoreOwner()), and SavedStateRegistryOwner, in addition to providing the arguments used to start that destination.
• Lifecycle ViewModel SavedState Integration: SavedStateViewModelFactory is now the default factory used when using by navGraphViewModels() or the ViewModelProvider constructor with a ViewModelStoreOwner returned by NavController.getBackStackEntry() or NavController.getViewModelStoreOwner().
• Query Parameter Support for Deep Links: Deep links with query parameters now support reordered query parameters; arguments that have a default value or are nullable are now optional when matching deep links.
• Improved Animation Support: NavHostFragment now uses FragmentContainerView from Fragment 1.2.0, fixing animation z-ordering issues and window insets dispatching to Fragments.

Version 2.2.0-rc04

December 18, 2019

androidx.navigation:navigation-*:2.2.0-rc04 is released. Version 2.2.0-rc04 contains these commits.

Bug fixes

• Adjusted the default fade animations used by navigation-ui to match the adjusted fade animations in Fragment 1.2.0-rc04. (b/145769814)

Version 2.2.0-rc03

December 4, 2019

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

Bug fixes

• Fixed an issue with deep link parsing when using query parameters and an argument as the last part of the path that prevented more than one character of the final path argument from being parsed. (b/144554689)
• Fixed an issue with deep link parsing where optional parameters would receive "@null" instead of null. (b/141613546)
• NavHostFragment now correctly restores the graph after a configuration change when used with FragmentContainerView. (b/143752103)

Dependency changes

• Navigation now depends on Lifecycle 2.2.0-rc03, Lifecycle ViewModel SavedState 1.0.0-rc03, Activity 1.1.0-rc03, and Fragment 1.2.0-rc03 where appropriate.

Version 2.2.0-rc02

November 7, 2019

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

Dependency changes

• Navigation now depends on androidx.lifecycle 2.2.0-rc02.

Version 2.2.0-rc01

October 23, 2019

androidx.navigation:navigation-*:2.2.0-rc01 is released with no changes since 2.2.0-beta01. Version 2.2.0-rc01 contains these commits.

Version 2.2.0-beta01

October 9, 2019

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

New features

• NavDestination and its subclasses now override toString() to provide more helpful information when debugging. (b/141264986)

Behavior changes

• Extra query parameters are now ignored when matching deep links rather than causing the match to fail. (b/141482822)

Bug fixes

• Fixed an issue where arguments in a deep link’s path would be ignored if query parameters were also specified. (b/141505755)
• The navArgs() Kotlin extension on Activity now has a better error message when there are no extras. (b/141408999)
• Safe Args generated Directions Java classes now contain default values. (b/141099045)
• Safe Args generated Args Java classes now contain default values. (b/140123727)
• When using a Toolbar, NavigationUI no longer animates the text change when moving between two top level destinations. (b/140848160)

Version 2.2.0-alpha03

September 18, 2019

androidx.navigation:navigation-*:2.2.0-alpha03 is released. Version 2.2.0-alpha03 contains these commits.

Behavior changes

• Calling setViewModelStore() after calling setGraph now results in an IllegalStateException. This should always be set by the NavHost as part of the initial setup to ensure that all NavBackStackEntry instances have a consistent storage for ViewModel instances. (aosp/1111821)

Bug fixes

• Fixed a ConcurrentModificationException when using ViewModel instances attached to multiple different navigation graph scoped ViewModelStore instances. (aosp/1112257)

Version 2.2.0-alpha02

September 5, 2019

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

New features

• Deep links with query parameters now support reordered query parameters; arguments that have a default value or are nullable are now optional when matching deep links. (b/133273839)
• You can now call NavController.getBackStackEntry(), passing in the ID of a destination or navigation graph on the back stack. The returned NavBackStackEntry provides a Navigation-driven LifecycleOwner, ViewModelStoreOwner (the same returned by NavController.getViewModelStoreOwner()), and SavedStateRegistryOwner, in addition to providing the arguments used to start that destination. (aosp/1101691, aosp/1101710)

Bug fixes

• Fixed an issue where adding a NavHostFragment to ViewPager2 failed with an IllegalArgumentException. (b/133640271)
• NavInflater now avoids calling getResourceName() unnecessarily, speeding up inflation time by up to 40%. (b/139213740)

Version 2.2.0-alpha01

August 7, 2019

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

New features

• SavedStateViewModelFactory is now the default factory used when using by navGraphViewModels() or the ViewModelProvider constructor with a ViewModelStoreOwner returned by NavController.getViewModelStoreOwner(). (b/135716331)

API changes

• From Navigation 2.1.0-rc01: The deprecated getViewModelStore() API on NavController introduced in 2.1.0-alpha02 has been removed. (aosp/1091021)

Bug fixes

• NavHostFragment now uses FragmentContainerView, fixing animation z-ordering issues and window insets dispatching to Fragments. (b/137310379)

Version 2.1.0

Version 2.1.0

September 5, 2019

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

Important changes since 2.0.0

• Scoping ViewModels to a navigation graph: You can now create ViewModels that are scoped at the navigation graph level using the by navGraphViewModels() property delegate for Kotlin users using the -ktx libraries or by using the getViewModelStoreOwner() API added to NavController. See Share UI-related data between destinations for more information.
• Dialog destinations: You can now create <dialog> destinations that will show a DialogFragment when you navigate to them. NavHostFragment supports dialog destinations by default. See Create a destination from a DialogFragment for more information.
• Navigating by Uri: You can now navigate using a Uri, which uses the <deepLink> you’ve added to a destination to navigate there. See Navigate using Uri for more information.
• NavHostController: APIs used specifically for constructing a custom NavHost have been moved to NavHostController, allowing implementations to connect their NavController to the hosting LifecycleOwner, OnBackPressedDispatcher, and ViewModelStore.

Version 2.1.0-rc01

August 7, 2019

androidx.navigation:navigation-*:2.1.0-rc01 is released. The commits included in this version can be found here.

API changes

• The deprecated getViewModelStore() API on NavController introduced in 2.1.0-alpha02 has been removed. (aosp/1091021)

Version 2.1.0-beta02

July 19, 2019

androidx.navigation:*:2.1.0-beta02 is released. The commits included in this version can be found here.

Bug fixes

• Removed unintentional jacoco dependency that was introduced in 2.1.0-beta01. (b/137782950)

Version 2.1.0-beta01

July 17, 2019

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

New features

• NavigationUI now animates the removal of the Up button when using setupWithNavController() with a Toolbar or CollapsingToolbarLayout. (b/131403621)

Bug fixes

• Fixed a timing issue when using multiple NavHostFragments with the same container with findNavController(). (b/136021571)

Version 2.1.0-alpha06

July 2, 2019

androidx.navigation:*:2.1.0-alpha06 is released. The commits included in this version can be found here.

New features

• The app:navGraph attribute used by NavHostFragment has now been moved to the navigation-runtime artifact. Custom navigators that can be added via XML should use this attribute to gain integration with the Navigation Editor’s Host panel. (b/133880955)

API changes

• The getViewModelStore() API on NavController has been deprecated in favor of the new getViewModelStoreOwner() method that returns a ViewModelStoreOwner. (aosp/987010)
• The implementation of floating window destinations, such as <dialog> destinations, has been generalized into a marker interface, FloatingWindow, that all <dialog> destinations now implement. NavigationUI methods for interacting with the top app bar now ignore FloatingWindow destinations. (b/133600763)

Behavior changes

• Navigation now correctly keeps its state in sync with what is seen on the screen when using a <dialog> destination. As a consequence, Navigation now automatically pops <dialog> destinations when you navigate to a non-dialog and non-activity destination, such as a <fragment> destination. (b/134089818)

Bug fixes

• Navigation now suppresses the animation that occurs when recreating the activity when handling a deep link, fixing a visual flash. (b/130362979)
• Fixed a bug where the Navigation back stack would be out of sync when popping a Fragment as the initial fragment is being added. (b/133832218)

Version 2.1.0-alpha05

June 5, 2019

androidx.navigation:*:2.1.0-alpha05 is released. The commits included in this version can be found here.

API changes

• Host related APIs on NavController have been renamed and moved to a new subclass of NavController, NavHostController. (aosp/966091)
• The NavController setHostOnBackPressedDispatcherOwner() method has been replaced with NavHostController’s setOnBackPressedDispatcher() method and now requires that you call setLifecycleOwner() prior to calling it. (aosp/965409)
• NavHostController now contains a enableOnBackPressed(boolean) method that replaces the NavHostOnBackPressedManager class that was previously returned by setHostOnBackPressedDispatcherOwner(). (aosp/966091)

Bug fixes

• Fixed an issue where the back stack was not correct after navigating by URI. (b/132509387)
• Deep links automatically handled by NavController now only trigger once. (b/132754763)

Version 2.1.0-alpha04

May 16, 2019

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

Bug fixes

• NavHostFragment correctly respects app:defaultNavHost when intercepting the system Back button events, fixing a regression in Navigation 2.1.0-alpha03. b/132077777
• DialogFragmentNavigator now correctly handles popBackStack() and navigateUp() operations. b/132576764
• Fixed an IllegalStateException: unknown destination during restore issue when repeatedly navigating between nested graphs. b/131733658

Version 2.1.0-alpha03

May 7, 2019

androidx.navigation:*:2.1.0-alpha03 is released. The commits included in this version can be found here.

Known Issues

• NavHostFragment continues to intercept the system Back button despite using app:defaultNavHost="false" b/132077777

New features

• You can now create <dialog> destinations that will show a DialogFragment when you navigate to them. NavHostFragment supports dialog destinations by default. b/80267254
• In addition to calling navigate with a resource id or a NavDirections instance, you can now navigate via a Uri, which uses the <deepLink> you’ve added to a destination to navigate to the correct destination. b/110412864

Behavior changes

• The default animations provided by NavigationUI have been sped up from 400ms to 220ms to match the default animation speed of activities and fragments. b/130055522

API changes

• The createFragmentNavigator() method of NavHostFragment has been deprecated and its functionality moved to the new onCreateNavController() method to make it more clear that this is the correct entry point of adding custom Navigators when subclassing NavHostFragment. b/122802849
• A hasDeepLink() method has been added to NavDestination to allow you to check if a given Uri can be handled by that destination or, in the case of a NavGraph, any destination in the navigation graph. b/117437718

Bug fixes

• Default arguments are now correctly passed to OnDestinationChangedListener instances. b/130630686
• NavHostFragment now intercepts system Back events using the OnBackPressedDispatcher, fixing an issue when doing conditional navigation in Fragment lifecycle methods upon returning to a Fragment. b/111598096
• For Safe Args, an android:defaultValue=”@null” with an unspecified app:argType is now properly inferred as a string argument. b/129629192

Version 2.1.0-alpha02

April 3, 2019

androidx.navigation:*:2.1.0-alpha02 is released. The commits included in this version can be found here.

New features

• You can now create ViewModels that are scoped at a navigation graph level via the by navGraphViewModels() property delegate for Kotlin users or by using the getViewModelStore() API added to NavController. b/111614463

API changes

• You can now add an app:targetPackage to an <activity> destination to limit the matching package name. It supports app:targetPackage="${applicationId}" for restricting the package to your own application id. b/110975456

Bug fixes

• The android:name for <activity> destinations is no longer parsed into a Class at inflation time, preventing ClassNotFoundExceptions when using dynamic features. b/124538597

Version 2.1.0-alpha01

March 19, 2019

This is the first alpha release of Navigation 2.1.0.

Dependency changes

• Navigation now depends on androidx.core:core:1.0.1 and androidx.fragment:fragment:1.1.0-alpha05. This release also removes the dependency on androidx.legacy:legacy-support-core-utils:1.0.0. b/128632612

API Changes

• A new Navigation.createNavigateOnClickListener(NavDirections) method has been added as an alternative to creating a click listener with a resource ID and Bundle. b/127631752
• FragmentNavigator.instantiateFragment is now deprecated. The default implementation now uses FragmentFactory to instantiate Fragments. b/119054429

Bug Fixes

• Navigation no longer sends a null Bundle when there are arguments attached to a destination, fixing an issue when using android:defaultValue="@null". b/128531879
• Safe Args now depends on KotlinPoet 1.1.0, fixing an issue with extremely long package names. b/123654948

Version 2.0.0

Version 2.0.0

March 14, 2019

Navigation 2.0.0 is released with no changes from 2.0.0-rc02.

Version 2.0.0-rc02

March 6, 2019

Navigation 2.0.0-rc02 provides new artifacts with the androidx.navigation group ID and changes its dependencies to the AndroidX equivalents.

The behavior of 2.0.0-rc02 is identical to behavior to Navigation 1.0.0-rc02 and no changes to your code should be required to update from 1.0.0-rc02 besides updating your dependencies to match the new dependencies.

Your project must have migrated to AndroidX to use 2.X releases of Navigation. Navigation 1.0 stable will be the last release using the Support Library dependencies; all future development beyond 1.0 will be based on AndroidX and build upon the 2.0 stable release.

Pre-AndroidX Dependencies

For the pre-AndroidX versions of Navigation, include these dependencies:

dependencies {
    def nav_version = "1.0.0"

    implementation "android.arch.navigation:navigation-fragment:$nav_version" // For Kotlin use navigation-fragment-ktx
    implementation "android.arch.navigation:navigation-ui:$nav_version" // For Kotlin use navigation-ui-ktx
}

For Safe args, add the following classpath in your top level build.gradle file

buildscript {
    repositories {
        google()
    }
    dependencies {
        classpath "android.arch.navigation:navigation-safe-args-gradle-plugin:1.0.0"
    }
}

Version 1.0.0

Version 1.0.0

March 14, 2019

Navigation 1.0.0 is released with no changes from 1.0.0-rc02.

Version 1.0.0-rc02

February 26, 2019

This is the second release candidate for Navigation's 1.0.0 stable release. This release contains a number of bug fixes.

Bug Fixes

• Fixed an issue where popBackStack() would be ignored if the root graph did not have an ID b/126251695
• navigateUp() now correctly handles navigating back to your app's task when called after handling a deep link without FLAG_ACTIVITY_NEW_TASK b/126082008
• Fixed an issue with ActivityNavigator.applyPopAnimationsToPendingTransition not applying the correct pop exit animation b/126237567
• Kotlin code generated by Safe Args now properly escapes Kotlin keywords such as in and fun in the package name associated with the R class. b/126020455

Version 1.0.0-rc01

February 21, 2019

This is a release candidate for Navigation's 1.0.0 stable release. This release contains one bug fix.

Bug Fixes

• Fixed an issue when using Fragments and singleTop navigation operations b/124294805

Version 1.0.0-beta02

February 12, 2019

This release includes a number of minor improvements and important bug fixes.

New Features

• You can now use 0 as an android:defaultValue for reference arguments. b/124248602

Behavior changes

• Exact deep link matches are now prioritized over deep links with .* or argument matches. b/123969518

Bug Fixes

• popBackStack() and navigateUp now correctly return false when popping the last destination on the back stack, fixing a regression introduced in 1.0.0-beta01. b/123933201
• Navigation now correctly sets the ClassLoader during restoration of saved instance state, avoiding issues when using custom classes in Navigator saved state or in arguments sent to a NavDestination. b/123893858
• Safe Args generated NavArgs classes no longer crash when restoring a Parcelable[] argument from saved instance state. b/123963545
• Safe Args now properly cleans up unnecessary generated Kotlin classes. b/124120883

Version 1.0.0-beta01

February 4, 2019

This is the first beta release of Navigation; moving forward, the Navigation API is expected to stay stable until the next version unless there is a critical problem. This release contains some bug fixes and behavior changes.

Behavior changes

• Navigation now ensures that argument default values are treated identically at runtime and through Safe Args. As a consequence, only arguments with an app:argType="reference" can have a default value point to another resource (for example, @color/colorPrimary). Attempting to use a reference default value with a different app:argType will result in an exception when parsing the navigation XML. b/123551990
• Safe Args now depends on Android Gradle Plugin 3.3.0 aosp/888413
• Safe Args now depends on Kotlin 1.3.20 aosp/888414

Bug Fixes

• Safe Args can now be used in library and feature modules on all versions of the Android Gradle Plugin. b/121304903
• Fixed a regression that would cause a single popBackStack() operation to pop all copies of a destination off the top of the back stack, rather than just a single destination at a time. b/123552990
• Fixed an issue where the FragmentNavigator state would desynchronize with the NavController's state, causing an IllegalStateException when attempting to restore the back stack. b/123803044
• Fixed an issue where the NavigationUI handled back arrow would not appear when using ProGuard with obfuscation. b/123449431
• The code generated by Safe Args now properly handles using an app:argType pointing to a static inner class in the format .OuterClass$InnerClass. b/123736741
• The Java code generated by Safe Args now properly handles global actions and deeply nested destinations. b/123347762

Version 1.0.0-alpha11

January 23, 2019

This is a hotfix release of 1.0.0-alpha10 that fixes an issue with Safe Args.

Bug Fixes

• Fixes an issue where Safe Args would fail to import the Directions class associated with global actions. b/123307342

Version 1.0.0-alpha10

January 23, 2019

Known Issues

• Safe Args fails to import the Directions class associated with global actions. b/123307342

This release contains breaking API changes; please see the Breaking Changes section below.

New Features

• Kotlin users can now use the by navArgs() property delegate to lazily get a reference to a Safe Args generated NavArgs class in an Activity or Fragment. b/122603367
• Safe Args now allows you to generate Kotlin code by applying the androidx.navigation.safeargs.kotlin plugin. The Kotlin code is built specifically for Kotlin only modules, using default arguments and immutable classes over the builder pattern that is still available via the previous androidx.navigation.safeargs plugin. b/110263087

Behavior Changes

• Matching deep links are now biased towards the deep link that has the most matching arguments. b/118393029
• Calling setGraph() on a NavController will now reset the back stack. b/111450672
• Unknown deep links no longer throw an IllegalStateException, but are ignored, fixing issues with nested or multiple NavHostFragments. b/121340440

Breaking Changes

• The NavOptions.applyPopAnimationsToPendingTransition() method for applying pop animations to an Activity has been moved to ActivityNavigator. b/122413117
• Safe Args now avoids duplicating identical classes for actions without arguments. The return type for no argument methods in generated NavDirections classes is now NavDirections. b/123233147
• Safe Args generated Directions classes no longer have a public constructor - you should only be interacting with the generated static methods. b/123031660
• Safe Args generated NavDirections classes no longer have a public constructor - they should only be generated via the static methods in the generated Directions classes. b/122963206
• The returned Bundle from NavDirections' getArguments() is now marked as @NonNull rather than @Nullable. b/123243957

Bug Fixes

• NavDeepLinkBuilder now correctly handles multiple simultaneous PendingIntents to the same destination by using the arguments you pass in to determine the uniqueness. b/120042732
• NavController now correctly handles popBackStack() operations when using a nested NavHostFragment or other child Fragments with a back stack. b/122770335
• NavigationUI now correctly sets the content description of the Up button. b/120395362
• Safe Args generated Directions classes now correctly handle global actions that have the same id as an action on a destination. b/122962504
• Safe Args generated NavDirections classes now correctly have equal hashCode() values when equals() would return true. b/123043662
• FragmentNavigator now throws a better error message if you attempt to do custom FragmentTransactions on the NavHostFragment's FragmentManager. You should always use getChildFragmentManager(). b/112927148

Version 1.0.0-alpha09

December 18, 2018

This release contains breaking API changes; please see the Breaking Changes section below.

We have chosen not to continue development of the android.arch.navigation:navigation-testing artifact. While it has proven helpful for internal testing of NavController, we strongly recommend alternate testing strategies, such as mocking the NavController instance in order to verify that the correct navigate() calls are being done. This approach is discussed in detail in the Single Activity talk at AndroidDevSummit 2018 and we'll be working on additional documentation specifically around testing with Navigation.

New Features

• MenuItems with menuCategory="secondary" will no longer pop the back stack when used with NavigationUI methods. b/120104424
• AppBarConfiguration now allows you to set a fallback OnNavigateUpListener instance which will be called when navController.navigateUp() returns false. b/79993862 b/120690961

Breaking Changes

• When using an <argument> with an argType="reference", Navigation no longer parses the reference, instead providing the raw resource ID itself. b/111736515
• onNavDestinationSelected() now pops back to the start destination of your navigation graph by default, making them consistent with the setup methods. Add menuCategory="secondary" to your MenuItem to avoid popping the back stack. aosp/852869
• The fromBundle() methods of generated Args classes now take a non-null Bundle instead of a nullable Bundle aosp/845616

Bug Fixes

• Arguments are now properly parsed from deep links as the correct argType instead of always as strings b/110273284
• Navigation now correctly exports its public resources b/121059552
• Safe Args is now compatible with Android Gradle Plugin 3.4 Canary 4 and higher b/119662045

Version 1.0.0-alpha08

December 6, 2018

This release contains breaking API changes; please see the Breaking Changes section below.

New Features

• Destination labels, when used with NavigationUI methods, will now automatically replace {argName} instances in your android:label with the correct argument b/80267266
• Navigation now depends on Support Library 28.0.0 b/120293333

Breaking Changes

• OnNavigatedListener has been renamed to OnDestinationChangedListener b/118670572
• OnDestinationChangedListener now also passes the Bundle of arguments aosp/837142
• The app:clearTask and app:launchDocument attributes and their associated methods have been removed. Use app:popUpTo with the root of your graph to remove all destinations from your back stack. b/119628354
• ActivityNavigator.Extras now uses a Builder pattern and adds the ability to set any Intent.FLAG_ACTIVITY_ flags aosp/828140
• NavController.onHandleDeepLink has been renamed to handleDeepLink aosp/836063
• Many classes and methods not meant for subclassing, such as NavOptions, NavInflater, NavDeepLinkBuilder, and AppBarConfiguration, have been made final aosp/835681
• The deprecated NavHostFragment.setGraph() method has been removed aosp/835684
• The deprecated NavigationUI.navigateUp(DrawerLayout, NavController) method has been removed. aosp/835684
• Fragment creation has been moved to FragmentNavigator, making it easier to delegate Fragment creation to a FragmentFactory. b/119054429
• The constructor for NavGraphNavigator no longer takes a Context aosp/835340
• NavigatorProvider is now a class, rather than an interface. The NavigatorProvider returned by getNavigatorProvider() has not changed its functionality. aosp/830660
• NavDestination.navigate() has been removed. Call navigate() on the Navigator instead. aosp/830663
• Significant refactoring of Navigator, removing the need for OnNavigatorNavigatedListener and instead having navigate return the NavDestination that was navigated to.
• Navigator instances can no longer send pop events to the NavController. Consider using a OnBackPressedCallback to intercept back button presses and call navController.popBackStack(). aosp/833716

Bug Fixes

• popUpTo now works consistently when the destination is a <navigation> element b/116831650
• Fixed a number of bugs that resulted in an IllegalArgumentException when using nested graphs b/118713731 b/113611083 b/113346925 b/113305559
• The dataPattern attribute of <activity> destinations will now populate arguments from non-String arguments by calling toString() b/120161365

Safe Args

• Safe Args supports Serializable objects, including Enum values. Enum types can set a default value by using the enum literal without the class name (e.g. app:defaultValue="READ") b/111316353
• Safe Args supports arrays of all supported types b/111487504
• Safe Args now ignores subfolders of resource directories b/117893516
• Safe Args adds @Override annotations where appropriate b/117145301

Version 1.0.0-alpha07

October 29, 2018

New Features

• A new AppBarConfiguration class allows you to customize which destinations are considered top-level destinations. See the updated documentation for details. b/117333663
• You can now pass arguments to the start destination of your graph b/110300470
• Deep links now support custom schemes with periods, hyphens, and plus signs. b/112806402

Breaking Changes

• The navigation-testing-ktx module has been folded into the navigation-testing artifact and will no longer be published.
• The navigation-testing artifact now has a dependency on the Kotlin standard library. The API has been changed to be more consistent with Kotlin conventions, but you can continue to use it for tests written in Java.
• Metadata manifest registered navigation graphs are no longer supported. b/118355937
• Actions can no longer be attached to <activity> destinations. aosp/785539

Bug Fixes

• Deep links now correctly parse query parameters. b/110057514
• Activity destinations now correctly apply all enter and exit animations. b/117145284
• Fixed crash that occurs after configuration changes when using custom Navigators. b/110763345

Safe Args

• Safe args now have a fixed dependency on Android Gradle Plugin 3.2.1. b/113167627
• Directions can now be generated for inner classes. b/117407555
• Fixed an issue with generating Directions to an <include> graph. b/116542123

Version 1.0.0-alpha06

September 20, 2018

New Features

• Shared Element Transitions for Fragment and Activity destinations are now supported b/79665225. For more information, see Implement navigation with the Navigation Architecture Component
• Selecting an item in NavigationView will now close any containing bottom sheet b/112158843

API Changes

• Breaking Change: The Navigator navigate() method now takes a Navigator.Extras parameter.
• NavController's getGraph() method is now NonNull b/112243286

Bug Fixes

• NavigationUI.setupWithNavController() no longer leaks views if used with views from individual destinations b/111961977
• Navigator onSaveState() is now only called once b/112627079

Safe Args

• Navigation destination Directions classes now extend their parent's Directions class if it exists b/79871405
• Directions and Args classes now have a useful toString() implementation b/111843389

Version 1.0.0-alpha05

August 10, 2018

Bug Fixes

• Fix a bug which cause incorrect backstack behavior. b/111907708
• Fix a bug in equals() of Generated Args classes. b/111450897
• Fix a build failure in Safe Args. b/109409713
• Fix a conversion from resource identifiers to java names b/111602491
• Fix error messages about nullability in Safe Args plugin.
• Add missing nullability annotations.

Version 1.0.0-alpha04

July 19, 2018

Navigation 1.0.0-alpha04 and the associated Safe Args gradle plugin contains a number of API changes, behavior changes, and bug fixes.

API / Behavior Changes

• NavHostFragment will always set the current Fragment as the primary navigation fragment, ensuring that child fragment managers are popped before the outer NavController is popped b/111345778

Safe Args

• Breaking Change: app:type has been changed to app:argType to avoid conflicts with other libraries such as ConstraintLayout 2.0.0-alpha1 b/111110548
• Error messages from Safe Args are now clickable b/111534438
• Args classes now confirms that NonNull attributes are actually not null b/111451769
• Additional NonNull annotations have been added to NavDirections and Args generated classes b/111455455 b/111455456

Bug Fixes

• Fixed an issue with the system back button after deep linking to a fragment destination b/111515685

Version 1.0.0-alpha03

July 12, 2018

Navigation 1.0.0-alpha03 and the associated Safe Args gradle plugin contains a number of API changes, behavior changes, and bug fixes.

API / Behavior Changes

• A NavigationUI.setupWithNavController method for Toolbar has been added b/109868820
• A NavigationUI.setupWithNavController method for CollapsingToolbarLayout has been added b/110887183
• popBackStack() now returns false when the back stack is empty or when the given destination ID is not in the back stack b/110893637
• FragmentNavigator now ignores navigation operations after FragmentManager has saved state, avoiding “Can not perform this action after onSaveInstanceState” exceptions b/110987825

Safe Args

• Breaking Change: Non-alphanumeric characters in action and argument names will be replaced by camel casing in the respective NavDirections method names
  • E.g. DemoController.index will become setDemoControllerIndex b/79995048
  • E.g. action_show_settings will become actionShowSettings b/79642240
• Breaking Change: Arguments are now considered non-null by default. To allow null values on string and parcelable arguments, add app:nullable="true" b/79642307
• You can now use app:type="long" with defaultValues in the form of “123L” b/79563966
• Parcelable arguments are now supported, using a fully qualified class name for app:type. The only default value supported is "@null" b/79563966
• Args classes now implement equals() and hashCode() b/79642246
• The Safe Args plugin can now be applied to library projects b/80036553
• The Safe Args plugin can now be applied to feature projects b/110011752

Bug Fixes

• Fixed issues when navigating during Fragment lifecycle methods b/109916080
• Fixed issues when navigating through nested graphs multiple times b/110178671
• Fixed issues when using setPopUpTo with the first destination in the graph b/109909461
• Fixed issue where all app:defaultValue values were being passed as Strings b/110710788
• aapt2 bundled with Android Gradle Plugin 3.2 Beta 01 now adds keep rules for every android:name attribute in Navigation XML files b/79874119
• Fixed memory leak when replacing the default FragmentNavigator b/110900142

Version 1.0.0-alpha02

June 7, 2018

Behavior Changes

• FragmentNavigator now uses setReorderingAllowed(true). b/109826220

• Navigation now URLDecodes arguments parsed from deep links URLs. b/79982454

Bug Fixes

• Fixed an IllegalStateException when calling navigate from Fragment lifecycle methods. b/79632233

• Navigation now depends on Support Library 27.1.1 to fix flickering when using animations. b/80160903

• Fixed an IllegalArgumentException when using defaultNavHost="true" as a child fragment. b/79656847

• Fixed a StackOverflowError when using NavDeepLinkBuilder. b/109653065

• Fixed an IllegalArgumentException when navigating back to a nested graph. b/80453447

• Fixed an issue with overlapping Fragments when using launchSingleTop. b/79407969

• Navigation now builds the correct synthetic back stack for nested graphs. b/79734195

• NavigationUI will now highlight the correct item when using a nested graph as a MenuItem. b/109675998

API Changes

• The clearTask attribute for actions and the associated API in NavOptions has been deprecated. b/80338878

• The launchDocument attribute for actions and the associated API in NavOptions has been deprecated. b/109806636

Version 1.0.0-alpha01

May 8, 2018

Navigation provides a framework for building in-app navigation. This initial release is 1.0.0-alpha01.