Intent ACTION_OPEN_DOCUMENT_TREE doesn't seem to return a real path to drive

Question

I\'m trying to read files from a USB storage device connected to my Google Pixel. I\'m currently using this method to select the path of the drive so I can query it for its

Answer 1

You are getting tree Uri. So you need to Add below code to get files from Tree Uri.

        DocumentFile documentFile = DocumentFile.fromTreeUri(this, uri);
        for (DocumentFile file : documentFile.listFiles()) {

            if(file.isDirectory()){ // if it is sub directory
                // Do stuff with sub directory
            }else{
                // Do stuff with normal file
            }

           Log.d("Uri->",file.getUri() + "\n");

        }

For the query the contents, you can use below code.

ContentResolver contentResolver = getActivity().getContentResolver();
    Uri docUri = DocumentsContract.buildDocumentUriUsingTree(uri,
            DocumentsContract.getTreeDocumentId(uri));
    Uri childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(uri,
            DocumentsContract.getTreeDocumentId(uri));
Cursor docCursor = contentResolver.query(docUri, new String[]{
            Document.COLUMN_DISPLAY_NAME, Document.COLUMN_MIME_TYPE}, null, null, null);
    try {
        while (docCursor.moveToNext()) {
            Log.d(TAG, "found doc =" + docCursor.getString(0) + ", mime=" + docCursor
                    .getString(1));

        }
    } finally {
        // close cursor
    }

You can check Google sample code: https://github.com/googlesamples/android-DirectorySelection/blob/master/Application/src/main/java/com/example/android/directoryselection/DirectorySelectionFragment.java#L150