How to use

com.orhanobut.tracklytics.Attribute

constructor

@TrackEvent("another_event")
@Attribute("user_id") // This attribute will use return value as attribute value.
private String userId() {
 return "2342";
}

@TrackEvent("login")
private void onLoggedIn(@TrackableAttribute User user, @Attribute("id") String id) {
}