Q:

Level Selector Screen like Farm Tower, Angry Birds, Cut the Rope, etc?

I want to make a level screen for my game similar to the ones in Angry Birds, Farm Tower, and Cut the Rope (the part where you select worlds, or the part similar to the gallery widget). I wanted to know what is the easiest way to attack this. 
How would I modify the Gallery view to work for this?

A:

Views form a hierarchy.  Make a Gallery of GridView's.
If you wish to adapt the code from the Gallery tutorial, change the ImageView to LevelSetView, and create a LevelSetAdapter that extends BaseAdapter, and override its getView method.
Here's a start.
public class HelloLevelsGalleryActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Gallery g = (Gallery) findViewById(R.id.gallery);
        g.setAdapter(new LevelSetAdapter(this));
    }

To understand better adapters: reference or this video at 2 minutes.
Also, the question was asked here.

