Android 15 platformunda, uygulamanızı etkileyebilecek davranış değişiklikleri vardır. Aşağıdaki davranış değişiklikleri, targetSdkVersion'ten bağımsız olarak Android 15'te çalıştırılan tüm uygulamalar için geçerlidir. Uygulamanızı test etmeniz ve ardından geçerli olduğu durumlarda bunları düzgün şekilde desteklemek için gerektiği gibi değiştirmeniz gerekir.
Yalnızca Android 15'i hedefleyen uygulamaları etkileyen davranış değişiklikleri listesini de inceleyin.
Temel işlevler
Android 15, Android sisteminin çeşitli temel özelliklerini değiştirir veya genişletir.
Paketin durdurulmuş durumundaki değişiklikler
The intention of the package FLAG_STOPPED state (which users
can engage in AOSP builds by long-pressing an app icon and selecting "Force
Stop") has always been to keep apps in this state until the user explicitly
removes the app from this state by directly launching the app or indirectly
interacting with the app (through the sharesheet or a widget, selecting the app
as live wallpaper, etc.). In Android 15, we've updated the behavior of the
system to be aligned with this intended behavior. Apps should only be removed
from the stopped state through direct or indirect user action.
To support the intended behavior, in addition to the existing restrictions, the
system also cancels all pending intents when the app enters the
stopped state on a device running Android 15. When the user's actions remove the
app from the stopped state, the ACTION_BOOT_COMPLETED
broadcast is delivered to the app providing an opportunity to re-register any
pending intents.
You can call the new
ApplicationStartInfo.wasForceStopped()
method to confirm whether the app was put into the stopped state.
16 KB sayfa boyutları için destek
Historically, Android has only supported 4 KB memory page sizes, which has optimized system memory performance for the average amount of total memory that Android devices have typically had. Beginning with Android 15, AOSP supports devices that are configured to use a page size of 16 KB (16 KB devices). If your app uses any NDK libraries, either directly or indirectly through an SDK, then you will need to rebuild your app for it to work on these 16 KB devices.
As device manufacturers continue to build devices with larger amounts of physical memory (RAM), many of these devices will adopt 16 KB (and eventually greater) page sizes to optimize the device's performance. Adding support for 16 KB page size devices enables your app to run on these devices and helps your app benefit from the associated performance improvements. Without recompiling, apps might not work on 16 KB devices when they are productionized in future Android releases.
To help you add support for your app, we've provided guidance on how to check if your app is impacted, how to rebuild your app (if applicable), and how to test your app in a 16 KB environment using emulators (including Android 15 system images for the Android Emulator).
Avantajlar ve performans kazanımları
Devices configured with 16 KB page sizes use slightly more memory on average, but also gain various performance improvements for both the system and apps:
- Lower app launch times while the system is under memory pressure: 3.16% lower on average, with more significant improvements (up to 30%) for some apps that we tested
- Reduced power draw during app launch: 4.56% reduction on average
- Faster camera launch: 4.48% faster hot starts on average, and 6.60% faster cold starts on average
- Improved system boot time: improved by 8% (approximately 950 milliseconds) on average
These improvements are based on our initial testing, and results on actual devices will likely differ. We'll provide additional analysis of potential gains for apps as we continue our testing.
Uygulamanızın etkilenip etkilenmediğini kontrol edin
Uygulamanız yerel kod kullanıyorsa uygulamanızı 16 KB'lık cihazları destekleyecek şekilde yeniden oluşturmanız gerekir. Uygulamanızın doğal kod kullanıp kullanmadığından emin değilseniz doğal kod olup olmadığını belirlemek için APK Analizörü'nü kullanabilir ve ardından bulduğunuz ELF segmentlerinin uyumluluğunu kontrol edebilirsiniz.
Uygulamanızda, tüm kitaplıklar veya SDK'lar dahil olmak üzere yalnızca Java programlama dilinde veya Kotlin'de yazılmış kod kullanılıyorsa uygulamanız zaten 16 KB'lık cihazları destekliyor demektir. Bununla birlikte, uygulama davranışında beklenmedik gerileme olmadığından emin olmak için uygulamanızı 16 KB'lık bir ortamda test etmenizi öneririz.
Bazı uygulamaların özel alanı desteklemesi için gereken değişiklikler
Private space is a new feature in Android 15 that lets users create a separate space on their device where they can keep sensitive apps away from prying eyes, under an additional layer of authentication. Because apps in the private space have restricted visibility, some types of apps need to take additional steps to be able to see and interact with apps in a user's private space.
All apps
Because apps in the private space are kept in a separate user profile, similar to work profiles, apps shouldn't assume that any installed copies of their app that aren't in the main profile are in the work profile. If your app has logic related to work profile apps that make this assumption, you'll need to adjust this logic.
Medical apps
When a user locks the private space, all apps in the private space are stopped, and those apps can't perform foreground or background activities, including showing notifications. This behavior might critically impact the use and function of medical apps installed in the private space.
The private space setup experience warns users that the private space is not suitable for apps that need to perform critical foreground or background activities, such as showing notifications from medical apps. However, apps can't determine whether or not they're being used in the private space, so they can't show a warning to the user for this case.
For these reasons, if you develop a medical app, review how this feature might impact your app and take appropriate actions—such as informing your users not to install your app in the private space—to avoid disrupting critical app capabilities.
Launcher apps
If you develop a launcher app, you must do the following before apps in the private space will be visible:
- Your app must be assigned as the default launcher app for the device—that
is, possessing the
ROLE_HOMErole. - Your app must declare the
ACCESS_HIDDEN_PROFILESnormal permission in your app's manifest file.
Launcher apps that declare the ACCESS_HIDDEN_PROFILES permission must handle
the following private space use cases:
- Your app must have a separate launcher container for apps installed in the
private space. Use the
getLauncherUserInfo()method to determine which type of user profile is being handled. - The user must be able to hide and show the private space container.
- The user must be able to lock and unlock the private space container. Use
the
requestQuietModeEnabled()method to lock (by passingtrue) or unlock (by passingfalse) the private space. While locked, no apps in the private space container should be visible or discoverable through mechanisms such as search. Your app should register a receiver for the
ACTION_PROFILE_AVAILABLEandACTION_PROFILE_UNAVAILABLEbroadcasts and update the UI in your app when the locked or unlocked state of the private space container changes. Both of these broadcasts includeEXTRA_USER, which your app can use to refer to the private profile user.You can also use the
isQuietModeEnabled()method to check whether the private space profile is locked or not.
App store apps
The private space includes an "Install Apps" button that launches an implicit
intent to install apps into the user's private space. In order for your app to
receive this implicit intent, declare an <intent-filter>
in your app's manifest file with a <category> of
CATEGORY_APP_MARKET.
PNG tabanlı emoji yazı tipi kaldırıldı
The legacy, PNG-based emoji font file (NotoColorEmojiLegacy.ttf) has been
removed, leaving just the vector-based file. Beginning with Android 13 (API
level 33), the emoji font file used by the system emoji renderer changed from a
PNG-based file to a vector based file. The system retained
the legacy font file in Android 13 and 14 for compatibility reasons, so that
apps with their own font renderers could continue to use the legacy font file
until they were able to upgrade.
To check if your app is affected, search your app's code for references to the
NotoColorEmojiLegacy.ttf file.
You can choose to adapt your app in a number of ways:
- Use platform APIs for text rendering. You can render text to a bitmap-backed
Canvasand use that to get a raw image if necessary. - Add COLRv1 font support to your app. The FreeType open source library supports COLRv1 in version 2.13.0 and higher.
- As a last resort, you can bundle the legacy emoji font file
(
NotoColorEmoji.ttf) into your APK, although in that case your app will be missing the latest emoji updates. For more information, see the Noto Emoji GitHub project page.
Minimum hedef SDK sürümü 23'ten 24'e yükseltildi
Android 15 builds on the
the changes that were made in Android 14 and extends this
security further. In Android 15, apps with a
targetSdkVersion lower than 24 can't be installed.
Requiring apps to meet modern API levels helps to ensure better security and
privacy.
Malware often targets lower API levels in order to bypass security and privacy
protections that have been introduced in higher Android versions. For example,
some malware apps use a targetSdkVersion of 22 to avoid being subjected to the
runtime permission model introduced in 2015 by Android 6.0 Marshmallow (API
level 23). This Android 15 change makes it harder for malware to avoid security
and privacy improvements. Attempting to install an app targeting a lower API
level results in an installation failure, with a message like the following one
appearing in Logcat:
INSTALL_FAILED_DEPRECATED_SDK_VERSION: App package must target at least SDK version 24, but found 7
On devices upgrading to Android 15, any apps with a targetSdkVersion lower
than 24 remain installed.
If you need to test an app targeting an older API level, use the following ADB command:
adb install --bypass-low-target-sdk-block FILENAME.apk
Güvenlik ve gizlilik
Android 15 introduces robust measures to combat one-time passcode (OTP) fraud and to protect the user's sensitive content, focusing on hardening the Notification Listener Service and screenshare protections. Key enhancements include redacting OTPs from notifications accessible to untrusted apps, hiding notifications during screenshare, and securing app activities when OTPs are posted. These changes aim to keep the user's sensitive content safe from unauthorized actors.
Developers need to be aware of the following to ensure their apps are compatible with the changes in Android 15:
OTP Redaction
Android will stop untrusted apps that implement a
NotificationListenerService from reading unredacted content
from notifications where an OTP has been detected. Trusted apps such as
companion device manager associations are exempt from these restrictions.
Screenshare Protection
- Notification content is hidden during screen sharing sessions to preserve
the user's privacy. If the app implements
setPublicVersion(), Android shows the public version of the notification which serves as a replacement notification in insecure contexts. Otherwise, the notification content is redacted without any further context. - Sensitive content like password input is hidden from remote viewers to prevent revealing the user's sensitive information.
- Activities from apps that post notifications during screenshare where an OTP has been detected will be hidden. App content is hidden from the remote viewer when launched.
- Beyond Android's automatic identification of sensitive fields, developers
can manually mark parts of their app as sensitive using
setContentSensitivity, which is hidden from remote viewers during screenshare. - Developers can choose to toggle the Disable screen share protections option under Developer Options to be exempted from the screenshare protections for demo or testing purposes. The default system screen recorder is exempted from these changes, since the recordings remain on-device.
Kamera ve medya içerikleri
Android 15, tüm uygulamalar için kamera ve medya davranışında aşağıdaki değişiklikleri yapar.
Doğrudan ve aktarma ses oynatma, kaynak sınırlarına ulaşıldığında daha önce açık olan doğrudan veya aktarma ses parçalarını geçersiz kılar
Before Android 15, if an app requested direct or offload audio playback while
another app was playing audio and the resource limits were reached, the app
would fail to open a new AudioTrack.
Beginning with Android 15, when an app requests direct or offload
playback and the resource
limits are reached, the system invalidates any currently open
AudioTrack objects which prevent fulfilling the new track request.
(Direct and offload audio tracks are typically opened for playback of compressed audio formats. Common use-cases for playing direct audio include streaming encoded audio over HDMI to a TV. Offload tracks are typically used to play compressed audio on a mobile device with hardware DSP acceleration.)
Kullanıcı deneyimi ve sistem kullanıcı arayüzü
Android 15, daha tutarlı ve sezgisel bir kullanıcı deneyimi sunmayı amaçlayan bazı değişiklikler içerir.
Özelliği etkinleştiren uygulamalarda tahmine dayalı geri hareketi animasyonları etkinleştirilir.
Beginning in Android 15, the developer option for predictive back animations has been removed. System animations such as back-to-home, cross-task, and cross-activity now appear for apps that have opted in to the predictive back gesture either entirely or at an activity level. If your app is affected, take the following actions:
- Ensure that your app has been properly migrated to use the predictive back gesture.
- Ensure that your fragment transitions work with predictive back navigation.
- Migrate away from animation and framework transitions and use animator and androidx transitions instead.
- Migrate away from back stacks that
FragmentManagerdoesn't know about. Use back stacks managed byFragmentManageror by the Navigation component instead.
Kullanıcı bir uygulamayı zorla durdurduğunda widget'lar devre dışı bırakılır
Bir kullanıcı, Android 15 çalıştıran bir cihazda bir uygulamayı zorla durdurursa sistem, uygulamanın tüm widget'larını geçici olarak devre dışı bırakır. Widget'lar devre dışı ve kullanıcı bunlarla etkileşimde bulunamaz. Bunun nedeni, Android 15'ten itibaren uygulama zorla durdurulduğunda sistemin, uygulamanın bekleyen tüm amaçlarını iptal etmesidir.
Kullanıcı uygulamayı bir sonraki açışında sistem bu widget'ları yeniden etkinleştirir.
Daha fazla bilgi için Paket durduruldu durumunda yapılan değişiklikler sayfasını inceleyin.
Medya yansıtma durum çubuğu çipi, kullanıcıları ekran paylaşımı, yayınlama ve kayıt hakkında uyarır
Screen projection exploits expose private user data such as financial information because users don't realize their device screen is being shared. Android has until now shown screen cast and screen record icons on the status bar, but the icons are small and often overlooked. Also, stopping screen sharing or recording is cumbersome because controls are in Quick Settings.
Android 15 introduces a new status bar chip that is large and prominent, which should alert users to any in-progress screen projection. Users can tap the chip to stop their screen from being shared, cast, or recorded.
To provide an intuitive user experience, screen projection now automatically stops when the device screen is locked.
Benefits and performance gains
The new media projection status bar chip enhances the user experience as follows:
- Alerts users to in-progress screen sharing, casting, or recording
- Enable users to terminate screen projection by tapping the chip
Automatic suspension of screen projection when the device screen is locked ensures user privacy.
Check if your app is impacted
By default, your app includes the new status bar chip and automatically suspends
screen projection when the lock screen activates. Test your app by implementing
the
onStop()
method of the
MediaProjection.Callback.
Verify that your app responds appropriately when the screen projection stops as
a result of the user tapping the status bar chip or when the lock screen
activates.
Kullanımdan kaldırmalar
Her sürümde belirli Android API'leri kullanımdan kaldırılabilir veya daha iyi bir geliştirici deneyimi sunmak ya da yeni platform özelliklerini desteklemek için yeniden tasarlanması gerekebilir. Bu tür durumlarda, eski API'lerin desteğini resmen sonlandırır ve geliştiricileri bunun yerine kullanabilecekleri alternatif API'lere yönlendiririz.
Desteği sonlandırma, API'ler için resmi desteği sonlandırdığımız ancak geliştiricilerin bu API'leri kullanmaya devam edebileceği anlamına gelir. Bu Android sürümünde desteği sonlandırılan önemli özellikler hakkında daha fazla bilgi edinmek için desteği sonlandırılan özellikler sayfasını inceleyin.