Android: How to add listener to hardware menu button?

Question

I'm currently trying to add a click listener to the menu hardware button. Currently I'm just putting my onclick logic into the onCreatePanelMenu-method and return false. But that just feels wrong.

Is there a more clean way?

The code currently looks like that:

@Override
public boolean onCreatePanelMenu(int featureId, Menu menu) {
    Toast.makeText(this, "HALLO!", Toast.LENGTH_SHORT).show();
    return false;
}

score 77 · Accepted Answer · 2011-11-15T14:50:21.990

77

Catch the key event inside onKeyDown() and add your action there.

Sample:

@Override
public boolean onKeyDown(int keycode, KeyEvent e) {
    switch(keycode) {
        case KeyEvent.KEYCODE_MENU:
            doSomething();
            return true;
    }

    return super.onKeyDown(keycode, e);
}

Just replace doSomething() with your functionality/methods.

edited Nov 15 '11 at 14:50

answered Nov 15 '11 at 13:53

Return false in my implementation. I'm using key to show / hide status & action bar. – danny117 Mar 21 '14 at 15:11

score 4 · Answer 2 · answered Nov 15 '11 at 14:41

If you need some code samples you can try this:

@Override
public boolean onCreateOptionsMenu(Menu menu)
{
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.main_menu, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item)
{
    switch (item.getItemId())
    {
        case R.id.preferences:
            showPreferencesActivity();
            return true;
        case R.id.logOff:
            logOff();
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}

The above should be pretty self explanotory - it sets a menu with the options to show preferences or log off.

/Nicklas

score 1 · Answer 3 · answered Nov 15 '11 at 13:52

1

try this http://developer.android.com/guide/topics/ui/menus.html#ChangingTheMenu

If you want to change the Options Menu any time after it's first created, you must override the onPrepareOptionsMenu() method

so the system will call onPrepareOptionsMenu() every time the user clicks Menu key

answered Nov 15 '11 at 13:52

Mohammad Ersan

12,304
8
54
77

I don't use a menu, I just want to use the hardware button to toggle a slider menu. – schlingel Nov 15 '11 at 13:53
sorry, i didnt get the question well, see @alextsc answer, its what you are looking for. – Mohammad Ersan Nov 15 '11 at 15:22

score 0 · Answer 4 · answered Nov 15 '11 at 13:53

0

onContextItemSelected

onOptionsItemSelected

I beleive are what you are looking for.

answered Nov 15 '11 at 13:53

prolink007

33,872
24
117
185

Android: How to add listener to hardware menu button?

4 Answers4

Linked