targetingnotifications
The notification permission is a runtime permission
POST_NOTIFICATIONS is a runtime permission on Android 13; apps must ask before posting notifications.
What to doRequest POST_NOTIFICATIONS and handle denial gracefully.
API 13 · HONEYCOMB_MR2
Android 3.2 Honeycomb
Screen-size compatibility for phone apps on tablets
What shipped
- Screen-size compatibility for phone apps on tablets
- SD card support for files
- New zoom controls for tablets
Platform internals
What changed underneath the APIs. These are the changes this site's architecture modules explain in depth.
- New screen-size resource qualifiers for compatibility scaling
What developers had to deal with
- New screen-size resource qualifiers
- Widget size APIs
Behaviour changes
The full archive has every recorded change with its migration advice.
targetingstorage
Granular media permissions
READ_MEDIA_IMAGES, READ_MEDIA_VIDEO and READ_MEDIA_AUDIO replace READ_EXTERNAL_STORAGE for media access.
What to doRequest only the media types you need instead of broad storage access.
targetingmedia
Photo picker is the recommended way to read images
The system photo picker gives access to selected media without a permission.
What to doAdopt the photo picker for choosing images and videos.
targetingbackground
Battery resource utilisation
Apps that use excessive CPU or wake locks are restricted and their background work is cut.
What to doCut unnecessary wake locks and test with battery historian or a trace.
all appsprivacy
Clipboard access is hidden
When an app reads the clipboard, the system shows a toast and hides the content if the app is not the default IME or focused.
What to doRead the clipboard only on explicit user action.
all appsmedia
Background audio is restricted
Apps that play audio without a foreground service can be stopped.
What to doUse a mediaPlayback foreground service for background audio.
targetingui
Themed app icons
Apps targeting Android 13 can provide a monochrome icon layer so the launcher can theme it.
What to doAdd a monochrome drawable to the adaptive icon.
targetingruntime
Per-app language
Users can set a language per app, so the app must handle locale changes at runtime.
What to doUse AppCompatDelegate.setApplicationLocales or the LocaleManager API, and handle configuration changes.
all appssecurity
Restricted settings for sideloaded apps
Apps installed from outside a store may have restricted access to accessibility and notification-listener settings.
What to doDistribute through Play, or guide users through the restricted-settings flow.
Where this sits
Release 13 of 37 API levels, by date
- Headline features
- 3
- Architecture changes
- 1
- Developer changes
- 2
- Sources cited
- 2
Kernel
This release shipped on Linux kernel versions 2.6.36. Kernel versions vary by device.