Moving application in background on back button event

Question

Is it possible to move the app in background when we click on device back button in android?

background means application moves to screen(application) from where it launches ?

it is possible like some download manager run in background while click back button....! — Dinesh, May 05 '12 at 10:54
@commonsWare - I know BACK button should behave normally, but this is one of feature in my current application. — Roll no1, May 05 '12 at 11:01

score 39 · Answer 1 · answered May 05 '12 at 11:10

39

Try Using

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) 
{
    switch(keyCode)
    {
        case KeyEvent.KEYCODE_BACK:

            moveTaskToBack(true);

            return true;
    }
    return false;
}

answered May 05 '12 at 11:10

Nishant Rajput

2,053
16
28

2

`moveTaskToBack(true)` does the job. Thanks! – 89n3ur0n Jun 21 '16 at 13:56

dan_flo10 · Answer 2 · 2023-02-03T01:47:40.337

17

@Override
public void onBackPressed() {
    moveTaskToBack(true);
}

Kotlin

override fun onCreate(savedInstanceState: Bundle?) {
    onBackPressedDispatcher.addCallback(this) { moveTaskToBack(true) }
}

edited Feb 03 '23 at 01:47

answered Mar 22 '16 at 21:13

dan_flo10

312
2
10

Roll no1 · Accepted Answer · 2014-12-09T05:33:43.267

I will prefer to use below code to move application in background

       @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) 
    {
        switch(keyCode)
        {
            case KeyEvent.KEYCODE_BACK:
              if(isTaskRoot()) {
               Intent homeIntent = new Intent(Intent.ACTION_MAIN);
               homeIntent.addCategory(Intent.CATEGORY_HOME);
               homeIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
               startActivity(homeIntent);
               return true;
                }
            else {
             super.keyDown(keyCode,event);
             return false;      
        }

    default: 
    super.keyDown(keyCode,event);
           return false;
 }

}

Moving application in background on back button event

3 Answers3

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