When I click a item in the ListView, "l.getSelectedItem()" which is called in the method "onListItemClick(ListView l, View v, int position, long id)" just returns a null pointer. Is that a bug of sdk? While I replace the "l.getSelectedItem()" with "l.getItemAtPosition(position)", then it returns the right pointer.
Oh, the version of my SDK is 0.9 beta