How to use onResume()?

Question

Can anyone give me an example that uses onResume() in Android?

Also, if I want to restart the activity at the end of the execution of another, which method is executed—onCreate() or onResume()?

And if I want to update data, how do I put it in onResume()?

Answer 1

Any Activity that restarts has its onResume() method executed first.

To use this method, do this:

@Override public void onResume(){     super.onResume();     // put your code here...  } 

Answer 2

Restarting the app will call OnCreate().

Continuing the app when it is paused will call OnResume(). From the official docs at https://developer.android.com/reference/android/app/Activity.html#ActivityLifecycle here's a diagram of the activity lifecycle.