Answer may be:

The lifecycle of activity:

• OnCreate(): It is the first method called where activity is created. The views are created in this as well as data is collected from bundles.
• OnStart(): This method is called when the activity becomes visible to the user. It may be called after OnResume() when the activity becomes foreground and OnStop() if it is hidden.
• OnResume(): This callback method is called when the activity starts interacting with the user.
• OnPause(): It is been called when the activity comes into the background but hasn't killed yet.
• OnStop(): The callback method is called when the activity is no more noticeable to the user.
• OnDestory(): The method is called to destroy the activity to free up the memory space.
• OnRestart(): It is called when activity has been stopped and before it starts again.