documentfile

Background I have a few apps that make heavy use of SD card for file syncing. The broken external SD card access on Kitkat is still a big problem, but I am trying to resolve this with the new API available on Lollipop for the users which have this. I successfully request and persist permission to SD card and I can list files in the root Uri returned from the grant permission activity. See more info on how this is done here: how-to-use-the-new-sd-card-access-api-presented-for-lollipop The user can then select any folder/subfolder for sync and I persist the folder document Uri as a string in the

I'm using this code to copy an image using documentFile.createFile() private void newcopyFile(File fileInput, String outputParentPath, String mimeType, String newFileName) { DocumentFile documentFileGoal = DocumentFile.fromTreeUri(this, treeUri); String[] parts = outputParentPath.split("\\/"); for (int i = 3; i < parts.length; i++) { if (documentFileGoal != null) { documentFileGoal = documentFileGoal.findFile(parts[i]); } } if (documentFileGoal == null) { Toast.makeText(MainActivity.this, "Directory not found", Toast.LENGTH_SHORT).show(); return; } DocumentFile documentFileNewFile =

My application uses Java class RandomAccessFile to read/write bytes to a file on SD card randomly by means of realization of SeekableByteChannel interface. Now I need rewrite it for Android 5.0 with new Lollipop API. I have found the only way to read: InputStream inputStream = getContentResolver().openInputStream(uri); and write: ParcelFileDescriptor pfd = getActivity().getContentResolver().openFileDescriptor(uri, "w"); FileOutputStream fileOutputStream = new FileOutputStream(pfd.getFileDescriptor()); from/to a file in new API. I would like to have an ability to set channel in some random

background Starting with Lollipop, apps can get access to real SD-cards (after it was not accessible on Kitkat, and was not officially supported yet worked on previous versions), as I've asked about here . The problem Because it has become quite rare to see a Lollipop device that supports SD-card and because the emulator doesn't really has the ability (or does it?) to emulate an SD-card support, it took me quite a while to test it. Anyway, it seems that instead of using the normal File classes to access the SD-card (once you got a permission for it), you need to use Uris for it, using

Alright, I've searched and searched and no one has my exact answer, or I missed it. I'm having my users select a directory by: Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE); startActivityForResult(intent, READ_REQUEST_CODE); In my activity I want to capture the actual path, which seems to be impossible. protected void onActivityResult(int requestCode, int resultCode, Intent intent){ super.onActivityResult(requestCode, resultCode, intent); if (resultCode == RESULT_OK) { if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M){ //Marshmallow } else if (android.os

After a lot of findings about how to write(and rename) a file in SD Card (android 5 and above), I think the new SAF provided by android will be required to take permission from user to write SD card file. I have seen in this File Manger Application ES File Explorer that initially it takes read and write permission the following way as shown in pictures. After selecting sd card, the write permission is granted. So in the same way I tried to use SAF, but failed in renaming a file. My code: @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);