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hpoul / file_picker_writable

Flutter plugin to choose files which can be read, referenced and written back at a later time.
https://pub.dev/packages/file_picker_writable
MIT License
17 stars 13 forks source link

Error opening from intent on Android #1

Closed amake closed 4 years ago

amake commented 4 years ago

Hi. Thanks very much for this plugin. I was looking for a way to obtain persistent access to external files, and happened to find your plugin from a discussion on https://github.com/miguelpruivo/flutter_file_picker.

I have had great success with your plugin when launching the picker with FilePickerWritable().openFilePicker(). However when opening a file from another app via an intent on Android I get the following error:

D/FilePickerWritable(26622): onNewIntent(content://com.android.providers.downloads.documents/document/22896)
D/FilePickerWritable(26622): Got method call: init
D/FilePickerWritable(26622): Error while handling method call io.flutter.plugin.common.MethodCall@3d1625c
D/FilePickerWritable(26622): java.lang.SecurityException: No persistable permission grants found for UID 10421 and Uri content://com.android.providers.downloads.documents/document/22896 [user 0]
D/FilePickerWritable(26622):    at android.os.Parcel.createException(Parcel.java:2071)
D/FilePickerWritable(26622):    at android.os.Parcel.readException(Parcel.java:2039)
D/FilePickerWritable(26622):    at android.os.Parcel.readException(Parcel.java:1987)
D/FilePickerWritable(26622):    at android.app.IUriGrantsManager$Stub$Proxy.takePersistableUriPermission(IUriGrantsManager.java:280)
D/FilePickerWritable(26622):    at android.content.ContentResolver.takePersistableUriPermission(ContentResolver.java:2428)
D/FilePickerWritable(26622):    at codeux.design.filepicker.file_picker_writable.FilePickerWritableImpl$copyContentUriAndReturnFileInfo$2.invokeSuspend(FilePickerWritableImpl.kt:227)
D/FilePickerWritable(26622):    at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
D/FilePickerWritable(26622):    at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:56)
D/FilePickerWritable(26622):    at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)
D/FilePickerWritable(26622):    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:738)
D/FilePickerWritable(26622):    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
D/FilePickerWritable(26622):    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)
D/FilePickerWritable(26622): Caused by: android.os.RemoteException: Remote stack trace:
D/FilePickerWritable(26622):    at com.android.server.uri.UriGrantsManagerService.takePersistableUriPermission(UriGrantsManagerService.java:328)
D/FilePickerWritable(26622):    at android.app.IUriGrantsManager$Stub.onTransact(IUriGrantsManager.java:139)
D/FilePickerWritable(26622):    at android.os.Binder.execTransactInternal(Binder.java:1021)
D/FilePickerWritable(26622):    at android.os.Binder.execTransact(Binder.java:994)
D/FilePickerWritable(26622):

It seems that takePersistableUriPermission won't always succeed so some error handling is necessary.

This indicates that takePersistableUriPermission is only valid for the ACTION_OPEN_DOCUMENT intent, which it seems can only be initiated by my application; for receiving other intents (like VIEW) from other applications, takePersistableUriPermission should not be invoked.

Either that, or perhaps my configuration is wrong?

I tried your example app, and I couldn't get it to appear in the app selector for .codeux files at all.

(Android 10 on a Pixel 2)