private final int CODE2 = 1001;

// Go to the other Activity
Intent intent = new Intent();
intent.putExtra("photoId", "8022360748");
intent.putExtra("Tag", tag);
intent.setClassName("com.flickrgallery",
    "com.flickrgallery.SetFlickrPhotoTag");
startActivityForResult(intent, CODE2);

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

        switch (requestCode) {
        case CODE2:
            break;
        }

}