Android Monitor Back button, home button + Press back again to exit the app

The Android monitor return key needs to override the OnKeyDown () method

HOME Button Keycode==keyevent.keycode_home

    @Override Public    boolean onKeyDown (int keycode, keyevent event) {        if (keycode = = Keyevent.keycode_back & & Event.getrepeatcount () = = 0) {            //do someting            return true;        }        Return Super.onkeydown (KeyCode, event);    }

Instance: Press the return key again to exit the app

Private long exittime = 0; @Overridepublic boolean onKeyDown (int keycode, keyevent event) {    if (keycode = = KEYEVENT.KEYC Ode_back && event.getaction () = = Keyevent.action_down) {           if (System.currenttimemillis ()-exittime) > () {              toast.maketext (Getapplicationcontext (), "Press Exit application Again", Toast.length_short). Show ();                                            Exittime = System.currenttimemillis ();           } else {            finish ();            System.exit (0);        }        return true;       }    Return Super.onkeydown (KeyCode, event);}

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Android Monitor Back button, home button + Press back again to exit the app