Skipping in Android Lifecycle methods

Question

I am trying to understand the actual concepts of the lifecycle methods of an Activity.

I am focusing on only primary lifecycle methods as mentioned below

onCreate()
onStart()
onResume()
onPause()
onStop()
onDestroy()

Can someone please explain a scenario where we can skip a method and rest lifecycle works perfectly fine?

E.g. if I swipe up and kill the application, onPause() and onStop() methods will be skipped and only the onDestroy() method will execute.

Answer 1

you cannot skip those methods, because when being implemented, they must call to their super class eg. AppCompatActivity - and when not being implemented, the will nevertheless be triggered within the super class. just see the documentation: Understand the Activity Lifecycle.

Answer 2

Can someone please explain a scenario where we can skip a method and rest lifecycle works perfectly fine.

It never can happen unless you manually call finish(), say, in onCreate() which is quite pointless. If a lifecycle method is "skipped" by the system (and the only scenario when it happens is an app process being killed) the rest of the methods are also "skipped".

If I swipe up and kill the application, onPause() and onStop() methods will be skipped and only onDestroy() method will execute.

Again, it never can happen by the reason described above.