notifyDataSetChanged() on my adapter does not update the listview, why?

Question

I have a activity that extends listactivity, extended in this class i have a class that extends baseadapter.

now in my listactivity i have this onCreate

Answer 1

If the adapter is already set, setting it again will not refresh the listview. Instead first check if the listview has a adapter and then call the appropriate method.

I think its not a very good idea to create a new instance of the adapter while setting the list view. Instead, create an object.

BuildingAdapter adapter = new BuildingAdapter(context);

    if(getListView().getAdapter() == null){ //Adapter not set yet.
     setListAdapter(adapter);
    }
    else{ //Already has an adapter
    adapter.notifyDataSetChanged();
    }