Android Programming - Override Options Menu

To override options menu simply add this code to your activity.

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



@Override
    public boolean onMenuItemSelected(int featureId, MenuItem item) {
        switch (item.getItemId()) {
        case R.id.about:
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setMessage("Overriding Options Menu\n(c) 2011")
                   .setTitle("Menu Pressed")
                   .setCancelable(true);
            builder.create().show();
            return true;
        }
        return super.onMenuItemSelected(featureId, item);
    }

The first section is the overriding of menu button, whenever menu button pressed, it will call you menu from listmenu.xml that placed in the folder res/menu.
Then the second section is the function that run when user click your options menu. For this code, I will create an AlertDialog that shows some text with close button in it.
Don't forget to create your listmenu.xml. Here is the example.

<?xml version="1.0" encoding="utf-8"?>
<menu
  xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/about" android:title="About"></item>
</menu>