I am trying to refresh a `GalleryView` with new items by adding the items to the `Adapter` and doing the following inside the handler which is called from inside `doInBackground` method of `AsyncTask`.

```
private final Handler handler = new Handler() {
    public void handleMessage(Message msg) {
        if(msg.arg1 == 1){

            gaAdapter.notifyDataSetChanged();
            ga.setAdapter(gaAdapter);
            ga.setSelection(midposition);
        }
    }   
};

```

The `GalleryView` seems to respond to the above code but does not automatically refresh itself. The items are updated only when it is horizontally scrolled. How can I do this automatically?