ActivityLifeCycle
When application is Launched first time
onCreate
onStart
onResume
When middle button is pressed
onPause
onStop
When middle button is pressed and then activity is brough back to foreground again
onStart
onResume
When middle button is pressed and then activity is brough back to foreground again
onStart
onResume
WHen app is killed
onPause
onStop
onDestroy
Note: onDestroy is not called in some cases