Cacher is the code snippet organizer for pro developers

package course.labs.notificationslab;

public interface SelectionListener {
	public void onItemSelected(int position);
}

//Supporting Fragment class1 
//field 
private SelectionListener mCallback;

//onAttach m()
@Override
	public void onAttach(Activity activity) {
		super.onAttach(activity);

		// This makes sure that the container activity has implemented
		// the callback interface. If not, it throws an exception
		try {
			mCallback = (SelectionListener) activity;
		} catch (ClassCastException e) {
			throw new ClassCastException(activity.toString()
					+ " must implement SelectionListener");
		}
	}
	
	@Override
	public void onListItemClick(ListView l, View view, int position, long id) {
		// Send the event to the host activity
		mCallback.onItemSelected(position);
	}
}