Singletons vs. Application Context in Android?

Question

Recalling this post enumerating several problems of using singletons and having seen several examples of Android applications using singleton pattern, I wonder if it\'s a go

Answer 1

Application is not the same as the Singleton.The reasons are:

1. Application's method(such as onCreate) is called in the ui thread;
2. singleton's method can be called in any thread;
3. In the method "onCreate" of Application,you can instantiate Handler;
4. If the singleton is executed in none-ui thread,you could not instantiate Handler;
5. Application has the ability to manage the life cycle of the activities in the app.It has the method "registerActivityLifecycleCallbacks".But the singletons has not the ability.