Graceful process shutdown on Android

How can I terminate an app in the Android Emulator so that Activity's onDestroy is called? Stopping the process from the Devices window seems to be a process ki开发者_JS百科ll, not a graceful closing like the OS does.

Just pressing the back button in the emulator should finish the activity and call onDestroy. That I suppose is the default behavior if you have not overridden it through onBackPressed.