kill my app process when exit the app by press back button

Question

In my app, I have only one Activity which hosts several fragments.

The layout of my activity is(main.xml):

<LinearLayout...>

    <FrameLayout 
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"   
        android:id="@+id/fragment_placeholder">
     </FrameLayout>

</LinearLayout>

My only Activity:

public class MyActivity extends FragmentActivity{
   ...
   @Override
   protected void onCreate(Bundle arg0) {
       super.onCreate(arg0);
       setContentView(R.layout.main);

       //I dynamically add fragments into fragment_placeholder of the layout

       FirstFragment firstFragment = new FirstFragment();

       FragmentManager fragmentManager = getSupportFragmentManager();
       FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

       fragmentTransaction.add(R.id.fragment_placeholder, FirstFragment, "first");
       fragmentTransaction.commit();
   }


}

I my above activity, I dynamically add the first fragment to layout. The other fragments replace this fragment accordingly.

I know when user press back button to exit the app, by default, my app will still run on background.

what I want however is to kill the app process when user seeing the firstFragment and press the back button (exits the app). But how can I kill my app technically(programmatically) in Android?

I think we have to call finish() of activity to close the activity. — Yugandhar Babu, Mar 16 '12 at 10:10
Activity will be closed, but the app's info. may be saved for fast startup of app for next time launches. see Android App life cycle available at Android Developers website for more information. — Yugandhar Babu, Mar 16 '12 at 10:22

score 3 · Accepted Answer · answered Mar 16 '12 at 11:28

3

I end up killing my app process by:

android.os.Process.killProcess(android.os.Process.myPid())

answered Mar 16 '12 at 11:28

Leem.fin

40,781
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202
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It is not recommended. http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon – Win Myo Htet Mar 16 '12 at 23:21
I want know by doing this i will get push notification or not – Vivek Elangovan Sep 16 '14 at 07:45

score 2 · Answer 2 · answered Mar 16 '12 at 10:15

2

you can override the back button behaviour by using below code and kill your activity

          public void onBackPresed(){

                  finish();

                     }

answered Mar 16 '12 at 10:15

Nikhil Lamba

593
1
6
17

Does finish() callback really kill the app process ? – Leem.fin Mar 16 '12 at 10:22
calling a finish(); remove the memory from Tasks and Back stack where all runing or pause app are store like Stack – Nikhil Lamba Mar 16 '12 at 10:31
I see, the thing is I dont want to back stack anything, that's why my post subject is how to KILL app. – Leem.fin Mar 16 '12 at 11:24

kill my app process when exit the app by press back button

2 Answers2