Using share dialog in Android Facebook SDK. How to know is user actually shared or cancelled sharing activity?

Question

I have added sharing functionality to Android app as described here https://developers.facebook.com/docs/android/share-dialog/#setup

But I have noticed that if user

Answer 1

@Override
public void onComplete(FacebookDialog.PendingCall pendingCall, Bundle data) {
    if (data.getString("com.facebook.platform.extra.COMPLETION_GESTURE").equals("cancel"))
        return;
}

the value of data.getString("com.facebook.platform.extra.COMPLETION_GESTURE") is "post" when the user did post on Facebook.