Платформа Android 16 включает изменения в поведении, которые могут повлиять на ваше приложение. Следующие изменения поведения применяются ко всем приложениям , работающим на Android 16, независимо от targetSdkVersion . Вам следует протестировать свое приложение, а затем при необходимости изменить его для поддержки этих изменений, где это применимо.
Обязательно ознакомьтесь также со списком изменений поведения, которые влияют только на приложения, предназначенные для Android 16 .
Основная функциональность
Android 16 включает следующие изменения, которые изменяют или расширяют различные основные возможности системы Android.
Оптимизация квот JobScheduler
Starting in Android 16, we're adjusting regular and expedited job execution runtime quota based on the following factors:
- Which app standby bucket the application is in: in Android 16, active standby buckets will start being enforced by a generous runtime quota.
- If the job starts execution while the app is in a top state: in Android 16, Jobs started while the app is visible to the user and continues after the app becomes invisible, will adhere to the job runtime quota.
- If the job is executing while running a Foreground Service: in Android 16, jobs that are executing while concurrently with a foreground service will adhere to the job runtime quota. If you're leveraging jobs for user initiated data transfer, consider using user initiated data transfer jobs instead.
This change impacts tasks scheduled using WorkManager, JobScheduler, and
DownloadManager. To debug why a job was stopped, we recommend logging why your
job was stopped by calling WorkInfo.getStopReason() (for
JobScheduler jobs, call JobParameters.getStopReason()).
For more information on battery-optimal best practices, refer to guidance on optimize battery use for task scheduling APIs.
We also recommend leveraging the new
JobScheduler#getPendingJobReasonsHistory API introduced in
Android 16 to understand why a job has not executed.
Testing
To test your app's behavior, you can enable override of certain job quota optimizations as long as the app is running on an Android 16 device.
To disable enforcement of "top state will adhere to job runtime quota", run the
following adb command:
adb shell am compat enable OVERRIDE_QUOTA_ENFORCEMENT_TO_TOP_STARTED_JOBS APP_PACKAGE_NAME
To disable enforcement of "jobs that are executing while concurrently with a
foreground service will adhere to the job runtime quota", run the following
adb command:
adb shell am compat enable OVERRIDE_QUOTA_ENFORCEMENT_TO_FGS_JOBS APP_PACKAGE_NAME
To test certain app standby bucket behavior, you can set the app standby bucket
of your app using the following adb command:
adb shell am set-standby-bucket APP_PACKAGE_NAME active|working_set|frequent|rare|restricted
To understand the app standby bucket your app is in, you can get the app standby
bucket of your app using the following adb command:
adb shell am get-standby-bucket APP_PACKAGE_NAME
Полное прекращение поддержки JobInfo#setImportantWhileForeground
The JobInfo.Builder#setImportantWhileForeground(boolean)
method indicates the importance of a job while the scheduling app is in the
foreground or when temporarily exempted from background restrictions.
This method has been deprecated since Android 12 (API level 31). Starting in Android 16, it no longer functions effectively and calling this method will be ignored.
This removal of functionality also applies to
JobInfo#isImportantWhileForeground(). Starting in Android
16, if the method is called, the method returns false.
Пользовательский опыт и системный интерфейс
Android 16 включает следующие изменения, призванные создать более последовательный и интуитивно понятный пользовательский интерфейс.
Отказ от деструктивных объявлений о доступности
Android 16 deprecates accessibility announcements, characterized by the use of
announceForAccessibility or the dispatch of
TYPE_ANNOUNCEMENT accessibility events. These can create
inconsistent user experiences for users of TalkBack and Android's screen reader,
and alternatives better serve a broader range of user needs across a variety of
Android's assistive technologies.
Examples of alternatives:
- For significant UI changes like window changes, use
Activity.setTitle(CharSequence)andsetAccessibilityPaneTitle(java.lang.CharSequence). In Compose, useModifier.semantics { paneTitle = "paneTitle" } - To inform the user of changes to critical UI, use
setAccessibilityLiveRegion(int). In Compose, useModifier.semantics { liveRegion = LiveRegionMode.[Polite|Assertive]}. These should be used sparingly as they may generate announcements every time a View is updated. - To notify users about errors, send an
AccessibilityEventof typeAccessibilityEvent#CONTENT_CHANGE_TYPE_ERRORand setAccessibilityNodeInfo#setError(CharSequence), or useTextView#setError(CharSequence).
The reference documentation for the deprecated
announceForAccessibility API includes more details about
suggested alternatives.