can't delete file from external storage in android programmatically

Question

I am trying to delete a file located at the path

/storage/714D-160A/Xender/image/Screenshot_commando.png

What I\'ve done so far:

Answer 1

From Android 4.4 onwards, you can't write to SD card files (except in the App directory) using the normal way. You'll have to use the Storage Access Framework using DocumentFile for that.

The following code works for me:

private void deletefile(Uri uri, String filename) {
    DocumentFile pickedDir = DocumentFile.fromTreeUri(this, uri);
    try {
        getContentResolver().takePersistableUriPermission(uri, Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
    } catch (SecurityException e) {
        e.printStackTrace();
    }

    DocumentFile file = pickedDir.findFile(filename);
    if(file.delete())
        Log.d("Log ID", "Delete successful");
    else
        Log.d("Log ID", "Delete unsuccessful");
}

where filename is the name of the file to be deleted and uri is the URI returned by ACTION_OPEN_DOCUMENT_TREE:

private static final int LOCATION_REQUEST = 1;

private void choosePath() {
    Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE);
    intent.addCategory(Intent.CATEGORY_DEFAULT);
    startActivityForResult(intent, LOCATION_REQUEST);
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent resultData) {
    if (requestCode == LOCATION_REQUEST && resultCode == Activity.RESULT_OK) {
        Uri uri;
        if (resultData != null) {
            uri = resultData.getData();
            if (uri != null) {
                try {
                    getContentResolver().takePersistableUriPermission(uri, Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
                } catch (SecurityException e) {
                    e.printStackTrace();
                }

                /* Got the path uri */
            }
        }
    }
}