Launch file chooser selector dialog

call_file_chooser.java

private static final int FILE_CHOOSER = 100;
...
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("*/*");
startActivityForResult(Intent.createChooser(intent, "Choose File"), FILE_CHOOSER);

recive_data_filechooser.java

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    switch (requestCode) {
        case FILE_CHOOSER:
            Log.d(TAG, "onActivityResult: FILE_CHOOSER =" + FILE_CHOOSER);
            if (resultCode == RESULT_OK) {
                Uri uri = data.getData(); //obtener el uri content
                Log.d(TAG, "uri: " + uri.toString());
            } else {
                //if (resultCode == RESULT_CANCELED) {
                Log.w(TAG, "Cancel by user");
            }
    }
}