I need to minimize the android application on back button click

Question

I need to minimize the application when back button is pressed.

I use following code to catch hardware back button click event

help me with the code of minimize on back key pressed

@Override
public boolean onKeyDown(int keyCode, keyEvent event) {
    switch(keyCode) {
    case KeyEvent.KEYCODE_BACK;
    //minimize application
    return true;
    }
    return super.onKeyDown(keyCode, event);
}

score 52 · Accepted Answer · answered Jan 27 '15 at 03:57

52

I think that you need to treat back event as home event. The code below is how I emulate home pressed when User press back button:

 public void minimizeApp() {
    Intent startMain = new Intent(Intent.ACTION_MAIN);
    startMain.addCategory(Intent.CATEGORY_HOME);
    startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(startMain);
}

answered Jan 27 '15 at 03:57

Kingfisher Phuoc

8,052
9
46
86

i am new here.. help me how to? – Jan 27 '15 at 04:18
In each answer, there's a tick (check) image below up/down vote. You can tick it (from gray -> green) to accept this answer to avoid anyone re-answer this question. – Kingfisher Phuoc Jan 27 '15 at 04:21
@KingfisherPhuoc ,if there is another app opened behind my app, on calling `minimizeApp()` it minimises all apps opened in background .How to overcome this ? – karanatwal.github.io Feb 06 '17 at 12:44

score 49 · Answer 2 · answered Jan 12 '16 at 18:21

49

This is a simple code to minimize the application

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

answered Jan 12 '16 at 18:21

DarckBlezzer

4,578
1
41
51

1

You saved me ! After a week looking for "releasing the foreground" I finally found your wonderfull answer. Which exactly respond to my question, even if it is not the same as this one. – Jérémy Jan 16 '19 at 19:54

RajaReddy PolamReddy · Answer 3 · 2015-01-27T03:55:42.257

try this code, this will minimize Activity.

public boolean onKeyDown(int keyCode, KeyEvent event)  
{
     if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0)
     {
        this.moveTaskToBack(true);
        return true;
     }
    return super.onKeyDown(keyCode, event);
}

or

If you want to close the activity use this.finish() method to close the current running activity. instead of this.moveTaskToBack(true);

I need to minimize the android application on back button click

3 Answers3

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