Call Method When Home Button Pressed

Which method is run when Home button pressed?

tapping the Home button creates an intent to launch the Home screen and then starts that intent

Correct.

If this is the case, I'd expect the onCreate() method to be run whenever the Home screen is created

Not necessarily. If it is already running, it would be called with onNewIntent().

If someone could just offer some enlightenment into this matter, the basic question is whether onResume() or onCreate() gets called when I tap the Home button

Any time any activity returns to the foreground from a user input standpoint, onResume() is called. Home screens should be no different in this regard.

onCreate() is called when the activity is created. Existing activities are not created, but are merely brought back to the foreground. If what triggered the activity to return to the foreground was a startActivity() call, the activity will be called with onNewIntent() and onResume() (and usually onStart(), for that matter).

what method is called when Actionbar back/home button is pressed?

you can remove the fragment in e.g. onDestroy() of the activity, so the fragment will go through it's lifecycle methods

Which methods are called only if I press the Home Button?

When you press the Home button on the device, the onPause method will be called. If the device thinks that it needs more memory it might call onStop to let your application shut down. The device can restart your application later from a stopped state. If your process killed, onDestroy will be called.

http://www.androidside.com/data/geditor/0812/1062731775_4e7c4d93_android+activity+life+cycle.jpg

---

Related Topics