Android : When an activity with "singleTask" launchMode comes to Foreground

I have an activity with "singleTask" mode. when this activity goes to background by taping on home key or other application, which methods will be called if it backs to foreground?

onCreate(Bundle savedInstanceState) with savedInstanceState != null
onRestoreInstanceState(Bundle savedInstanceState)

I think because there is one instance of this activity, it doesn't need to save and restore its state and it retain its own state always. am I right?