Android Development "Press and Exit program" implementation

Now that the Mobile Client Exit Program dialog box exits is becoming more and more out of fashion, all started using a continuous press two times to exit, that is, the famous "Press again exit program" mode. Let's see how it's going to come true.

@SuppressLint ("Handlerleak") Handler Handler=NewHandler () { Public voidhandlemessage (Message msg) {Switch(Msg.what) {}}}; BooleanWillexit =false; @Override Public voidonbackpressed () {//TODO auto-generated Method StubRunnable Resetflag=NewRunnable () {@Override Public voidrun () {//TODO auto-generated Method StubWillexit =false;                }        }; if(!willexit) {Toast.maketext ( This, "Press again to exit the program", Toast.length_short). Show (); Willexit=true; Handler.postdelayed (Resetflag,2*1000); }Else{handler.removecallbacks (Resetflag);        Finish (); }    }