How to add a listener to home button?

Question

How to add a listener to home button? i.e I want to add some functionality when home button is pressed. How do I do it? I did the following, but it is not working for home button. It's working only for back button.

public boolean onKeyDown(int keyCode, KeyEvent event)
    {
        if (keyCode == KeyEvent.KEYCODE_BACK)
        {
                   // some functionality

    }

    if (keyCode == KeyEvent.KEYCODE_HOME)
    {

        // some functionality

    }

    // // TODO Auto-generated method stub
    return super.onKeyDown(keyCode, event);

}

this answer can help you to resolver it http://stackoverflow.com/a/31340960/6649041 — Alex, Aug 29 '16 at 06:59

score 1 · Answer 1 · edited Sep 22 '12 at 06:56

1

You must override onAttachedToWindow() first.

@Override
    public void onAttachedToWindow() {
        this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD); 
        super.onAttachedToWindow();
    }

In addition, you need to add the permission:

<uses-permission android:name="android.permission.DISABLE_KEYGUARD "></uses-permission>

edited Sep 22 '12 at 06:56

biegleux

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answered Sep 06 '12 at 02:55

chiefhsing

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score 1 · Answer 2 · edited May 23 '17 at 10:29

1

don't do that. its not correct to do that because the only use of home button is to exit from the application at any point. you can use isFinishing() if u want to execute any code while leaving an activity. have a look into this.

edited May 23 '17 at 10:29

Community

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answered Jan 31 '12 at 11:08

Seshu Vinay

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score 0 · Answer 3 · answered Jan 31 '12 at 10:55

0

You can't do that. The Android policy forbids that a App can overwrite or listen to the Homebutton.
Maybe you can accomplish what you want with overwriting onDetachFromWindow.

answered Jan 31 '12 at 10:55

Thommy

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score 0 · Answer 4 · answered Jan 31 '12 at 11:05

0

You can't but you could use onPause(). The application will be paused when the home button is clicked.

answered Jan 31 '12 at 11:05

Warpzit

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score 0 · Answer 5 · answered Jan 31 '12 at 13:21

How to add a listener to home button?

You don't. The HOME button always brings up the user's chosen home screen. You can elect to make your app be a home screen, by supporting CATEGORY_HOME in an activity, but then it had better really work as a home screen.

How to add a listener to home button?

5 Answers5