android / android/codelab-android-workmanager
Android 8.1.0 "API 27" (Permision denial: android.permission.WRITE_EXTERNAL_STORAGE don't work)
- Dominant language
- Kotlin
- Stars
- 557
- Forks
- 242
- PR merge metrics
- No merged PRs in 30d
Description
I catch an error on API 27:
2022-10-05 13:49:41.061 16988-17081/com.example.background E/MediaStore: Failed to insert image
java.lang.SecurityException: Permission Denial: writing com.android.providers.media.MediaProvider uri content://media/external/images/media from pid=16988, uid=10116 requires android.permission.WRITE_EXTERNAL_STORAGE, or grantUriPermission()
at android.os.Parcel.readException(Parcel.java:2013)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:183)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:135)
at android.content.ContentProviderProxy.insert(ContentProviderNative.java:476)
at android.content.ContentResolver.insert(ContentResolver.java:1539)
at android.provider.MediaStore$Images$Media.insertImage(MediaStore.java:993)
at com.example.background.workers.SaveImageToFileWorker.doWork(SaveImageToFileWorker.kt:40)
at androidx.work.Worker$1.run(Worker.java:86)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)
2022-10-05 13:49:41.061 16988-17081/com.example.background E/SaveImageToFileWorker: Writing to MediaStore failed
This permission is mensioned in manifest (see screenshot)

How to fix this error on API 27?
Contributor guide
Research direction
Start at SaveImageToFileWorker.kt line 40, where the API 27 stack trace shows the MediaStore write failing, and inspect the manifest permission declaration. Reproduce the failure on Android 8.1/API 27; done means the worker can write the image to MediaStore without the reported SecurityException.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- android, kotlin
- Domain
- mobile
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100