Pressing Menu Button Causes Crash In Activity With No Actionbar

I'm a newbie in Android and working on my first app. I have the main activity with no ActionBar in it. And I don't want to display any menu in that Activity. Everything is working

Solution 1:

My guess is that this is a bug in the AppCompat library. If you take a look at the code for ActionBarImplICS.getThemedContext() you see that it's the mActionBar that is null:

http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android/4.3_r1/android/support/v7/app/ActionBarImplICS.java#ActionBarImplICS.getThemedContext%28%29

My guess is that you're using an activity without a title (and thus also without an actionbar):

requestWindowFeature(Window.FEATURE_NO_TITLE);

If I remove this and launch the activity with a title/actionbar I haven't been able to reproduce the crash. Now, running the app with a titlebar when you don't want or need one isn't a very good option. My suggestion is that you override the Menu key press. The app stopped crashing for me when I did this:

@OverridepublicbooleanonKeyDown(int keyCode, KeyEvent event) {
    if ( keyCode == KeyEvent.KEYCODE_MENU ) {
        // do nothingreturntrue;
    }
    returnsuper.onKeyDown(keyCode, event);
}   

Solution 2:

Looks like this will be fixed in the next support library release http://code.google.com/p/android/issues/detail?id=61394