Howto extend SomeActivity to relocate e.g. onCreateOptionsMenu?

Question

I know this should be fairly simple but I don't get it anyhow.
I've got an Activity (let's call it XyActivity) which has gotten pretty long. Therefore, I'd like to relocate some overriden methods to a subclass (let's call it XyOptions). Looks like that:

public class XyActivity extends Activity {
    XyOptions xyOptions;
    public void onCreate(Bundle savedInstanceState) {
        xyOptions = new XyOptions();
        ...
    }
}

and

public class XyOptions extends XyActivity {

    public EditImageOptions() {...}

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {...}

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {...}

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {...}

Unfortunately, the methods in XyOptions are never called. And I don't get why. I'am sure the answer is trivial so please point me in some direction.

Thanks,
Steff

Answer 1

You are misunderstanding the inheritance here. If you want to populate the menu in a subclass, try this:

public class XyActivity extends XyOptions {
    public void onCreate(Bundle savedInstanceState) {
       //.. other 
    }
}

public class XyOptions extends Activity {

    public EditImageOptions() {...}

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {...}

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {...}

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {...}
}