77.8 Gaining Persistent Access to a File

When an application gains access to a file via the Storage Access Framework, the access will remain valid until the Android device on which the application is running is restarted. Persistent access to a specific file can be obtained by “taking” the necessary permissions for the Uri. The following code, for example, persists read and write permissions for the file referenced by the fileUri Uri instance:

val takeFlags = (intent.flags and (Intent.FLAG_GRANT_READ_URI_PERMISSION

                                       or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)

 

contentResolver.takePersistableUriPermission(fileUri, takeFlags)

Once the permissions for the file have been taken by the application, and assuming the Uri has been...