getwallpaperdrawable

Resolution: Won't fix

https://issuetracker.google.com/issues/237124750#comment60

<ad... @google.com> May 2, 2023 03:49PM #60 Status: Won't Fix (Intended Behavior)

We discussed the behavior with our product and engineering team and they were supportive of keeping the API only accessible to privileged system apps.

Problem:

With targetSdk 33 on Android 13 it is not possible to request Manifest.permission.READ_EXTERNAL_STORAGE but this permission is still required by WallpaperManager#getDrawable()

This example works fine on Android 12, but on Android 13 the permission is automatically denied and the permission dialog does not pop up.

If the requested permission is changed from Manifest.permission.READ_EXTERNAL_STORAGE to Manifest.permission.READ_MEDIA_IMAGES as suggested in the documentation then a permission dialog appears, but after allowing the permission WallpaperManager.getDrawable() fails with following error:

com.github.cvzi.getwallpaperdrawable V/MainActivity: Permission granted
com.github.cvzi.getwallpaperdrawable E/MainActivity: java.lang.SecurityException: Permission android.permission.READ_EXTERNAL_STORAGE denied for package com.github.cvzi.getwallpaperdrawable
        at android.os.Parcel.createExceptionOrNull(Parcel.java:3011)
        at android.os.Parcel.createException(Parcel.java:2995)
        at android.os.Parcel.readException(Parcel.java:2978)
        at android.os.Parcel.readException(Parcel.java:2920)
        at android.app.IWallpaperManager$Stub$Proxy.getWallpaperWithFeature(IWallpaperManager.java:895)
        at android.app.WallpaperManager$Globals.getCurrentWallpaperLocked(WallpaperManager.java:667)
        at android.app.WallpaperManager$Globals.peekWallpaperBitmap(WallpaperManager.java:563)
        at android.app.WallpaperManager$Globals.peekWallpaperBitmap(WallpaperManager.java:538)
        at android.app.WallpaperManager.getDrawable(WallpaperManager.java:791)
        at com.github.cvzi.getwallpaperdrawable.MainActivity.showWallpaper(MainActivity.kt:65)
        at com.github.cvzi.getwallpaperdrawable.MainActivity.onRequestPermissionsResult(MainActivity.kt:52)
        at android.app.Activity.dispatchRequestPermissionsResult(Activity.java:8754)
        at android.app.Activity.dispatchActivityResult(Activity.java:8612)
        at android.app.ActivityThread.deliverResults(ActivityThread.java:5337)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:5383)
        at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:67)
        at android.app.servertransaction.ActivityTransactionItem.execute(ActivityTransactionItem.java:45)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2306)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loopOnce(Looper.java:201)
        at android.os.Looper.loop(Looper.java:288)
        at android.app.ActivityThread.main(ActivityThread.java:7892)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)
     Caused by: android.os.RemoteException: Remote stack trace:
        at android.os.storage.StorageManager.checkPermissionAndAppOp(StorageManager.java:1805)
        at android.os.storage.StorageManager.checkPermissionAndAppOp(StorageManager.java:1782)
        at android.os.storage.StorageManager.checkPermissionAndAppOp(StorageManager.java:1849)
        at android.os.storage.StorageManager.checkExternalStoragePermissionAndAppOp(StorageManager.java:1965)
        at android.os.storage.StorageManager.checkPermissionReadImages(StorageManager.java:1931)

Screenshots

Android 12	Android 13 Beta 3.2