How to exit the whole application by clicking one created button?

Question

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Quitting an application - is that frowned upon?

I am creating a button in my apps and by clicking this button, all the states will be saved and user will exit the whole application. When user re-click on the apps, he/she should be brought to the main activity. I have tried using finish() and System.exit(0) but both of these functions are just ending the current activity and bring me to the previous activity... how can i achieve this? thanks.

you can resolve this problem by calling startActivtyForResult() other than startActivity() in all parent activities. — Krishna Prasad, May 17 '12 at 07:14
Have you checked [http://stackoverflow.com/questions/2042222/close-application](http://stackoverflow.com/questions/2042222/close-application) and [http://stackoverflow.com/questions/3226495/android-exit-application-code](http://stackoverflow.com/questions/3226495/android-exit-application-code)? — silwar, May 17 '12 at 07:15
hope these threads helps you http://stackoverflow.com/questions/3105673/android-how-to-kill-an-application-with-all-its-activities http://stackoverflow.com/questions/6014028/closing-application-with-exit-button — Hassy31, May 17 '12 at 07:22
here what is your main activity the very first activity of application or the last activity of application which you quit — Avi Kumar, May 17 '12 at 07:41

score 0 · Answer 1 · edited May 23 '17 at 12:06

Not recommened but still you can use this. Better go with this solution in case you need to quit the app.

According to me the best solution is finish every activity in your app like below.

step1) maintain a static variable in mainactivity say.

 public static isQuit = false;

step2) on click event of an button make this variable to true and finish the current activity.

   mainactivity.isQuit = true;
   finish();

step3) And in every activity of your application have onrestart method as below..

 @Override
      protected void onRestart() {
         // TODO Auto-generated method stub
         super.onRestart();
        if(mainactivity.isQuit)
            finish();
    }

Refer this LINK

score 0 · Answer 2 · answered May 17 '12 at 07:05

0

calling Move to Back will hide your application. you shouldn't call System.exit(0);

It's always better to rely on Android OS to decide when a app needs to be killed.

answered May 17 '12 at 07:05

Mayank

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score 0 · Answer 3 · answered May 17 '12 at 07:45

Find the below code for close the application.Firstly clear the activity stack and using flag then use finish() method.

 Intent intent = new Intent(getApplicationContext(), FinishActivity.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            finish();
            startActivity(intent);

In FinishActivity class in onCreate() jest simply write finish() method

public class FinishActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    finish();
}

}

How to exit the whole application by clicking one created button?

3 Answers3