Android Learning--exit the entire application

Copy the following Sysapplication class into the project and then pass Sysapplication.getinstance () in the OnCreate method of each acitivity. Addactivity (this); Add the current acitivity to Ancivitylist, and finally call Sysapplication.getinstance () when you want to exit. exit (); You can close all acitivity and exit the application directly.

 PackageCom.example.Emotional.util;Importjava.util.LinkedList;Importjava.util.List;Importandroid.app.Activity;Importandroid.app.Application; /*** class Name: Sysapplication * Class Description: Quit the entire application class * created: 2014-4-25 1:58:00 * Edit notes: *@version    * */  Public classSysapplicationextendsApplication {PrivateList<activity> mlist =NewLinkedlist<activity>(); Private StaticSysapplication instance; Privatesysapplication () {} Public synchronized Staticsysapplication getinstance () {if(NULL==instance) {Instance=Newsysapplication (); }         returninstance; }     //Add Activity     Public voidaddactivity (activity activity) {Mlist.add (activity); }        Public voidexit () {Try {              for(Activity activity:mlist) {if(Activity! =NULL) Activity.finish (); }         } Catch(Exception e) {e.printstacktrace (); } finally{system.exit (0); }     }      Public voidonlowmemory () {Super. Onlowmemory ();     System.GC (); }  }

When the hard Exit button is clicked

//Click the Hard Exit button     Public voidClickquitdialog () {Alertdialog.builder Builder=NewBuilder (firstactivity. This); Builder.setmessage ("Are you sure you want to quit?"); //builder.settitle ("hint");Builder.setpositivebutton ("Confirm",NewAndroid.content.DialogInterface.OnClickListener () {@Override Public voidOnClick (Dialoginterface Dialog,intwhich) {Dialog.dismiss ();//FirstActivity.this.finish ();//system.exit (0);sysapplication.getinstance (). exit ();             }                 }); Builder.setnegativebutton ("Cancel",NewAndroid.content.DialogInterface.OnClickListener () {@Override Public voidOnClick (Dialoginterface Dialog,intwhich)                     {Dialog.dismiss ();             }                 });         Builder.create (). Show (); } @Override Public BooleanOnKeyDown (intKeyCode, KeyEvent event) {                          //Event.getrepeatcount () = = 0 Prevent repeated clicks            if(KeyCode = = Keyevent.keycode_back && event.getrepeatcount () = = 0) {clickquitdialog (); return false; }             return false; } 

Android Learning--exit the entire application