我通过以下方式在屏幕"a"中接收uri:
val launcher = rememberLauncherForActivityResult(ActivityResultContracts.StartActivityForResult()) { activityResult ->
if(activityResult.resultCode == Activity.RESULT_OK) {
val uri = activityResult.data?.data!!
context.contentResolver.takePersistableUriPermission(uri, Intent.FLAG_GRANT_READ_URI_PERMISSION)
viewModel.onUriReceived(uri)
}
}
LaunchedEffect(launcher) {
val intent = Intent(Intent.ACTION_OPEN_DOCUMENT, MediaStore.Video.Media.EXTERNAL_CONTENT_URI).apply {
addCategory(Intent.CATEGORY_OPENABLE)
type = "video/*"
addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION)
addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
}
coroutineScope.launch {
launcher.launch(intent)
}
}
我可以在屏幕"A"中打开uri,但如果我将uri传递到屏幕"B",我会收到:
java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaDocumentsProvider uri content://com.android.providers.media.documents/document/video:38 from pid=6074, uid=10146 requires that you obtain access using ACTION_OPEN_DOCUMENT or related APIs
at android.os.Parcel.createExceptionOrNull(Parcel.java:2425)
at android.os.Parcel.createException(Parcel.java:2409)
at android.os.Parcel.readException(Parcel.java:2392)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:190)
at android.database.DatabaseUtils.readExceptionWithFileNotFoundExceptionFromParcel(DatabaseUtils.java:153)
at android.content.ContentProviderProxy.openTypedAssetFile(ContentProviderNative.java:780)
at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:2027)
at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:1842)
at android.content.ContentResolver.openInputStream(ContentResolver.java:1518)
Github repo复制错误:https://github.com/geckogecko/PermissionDenialPlayground