Return result from fragment to fragment

//run dialog fragment in fragment
Fragment fragmentByTag = getFragmentManager().findFragmentByTag(DownloadDialogFragment.TAG);
if (fragmentByTag == null) {
    CustomDialog customDialog = new CustomDialog();
	customDialog.setTargetFragment(currentFragment, REQUEST_DOWNLOAD_FRAGMENT);
    customDialog.show(getFragmentManager(), CustomDialog.TAG);
}

//in dialog, init result to onActivityResult
getTargetFragment().onActivityResult(getTargetRequestCode(), Activity.RESULT_OK, optionalIntent);
getActivity().setResult(Activity.RESULT_OK);

//catch result in main fragment
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_DOWNLOAD_FRAGMENT && resultCode == Activity.RESULT_OK) {
        ..todo here
    } else
        super.onActivityResult(requestCode, resultCode, data);
}