Custom layout within fragment

Question

I have a fragment containing a cusom layout and an event listener to handle the user interaction with the custom view. But I get a null pointer exception on setting the event listener inside the fragment. Here, I found that the custom view reference is null in the fragment.

public class CustomCalendarView extends LinearLayout {

private EventListener eventListener;
public CustomCalendarView(Context context, AttributeSet attrs) 
{
    super(context);
    ............
    cellView = (GridView) findViewById(R.id.calendar_grid);
    cellView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
        @Override
        public boolean onItemLongClick(AdapterView<?> adapterView, View view, int i, long l) {
            if (eventListener == null)
                return false;

            eventListener.onDayLongPress((Date) adapterView.getItemAtPosition(i));
            return true;
        }
    });
}

public void setEventListener(EventListener eventListener) {
    this.eventListener = eventListener;
}

public interface EventListener {
    void onDayLongPress(Date date);
}

}

public class DescribeFragment extends Fragment {

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) 
{
    View view = inflater.inflate(R.layout.fragment_explore_planner, container, false);
    MainActivity activity = (MainActivity) getActivity();

    customCalendarView = ((CustomCalendarView) view.findViewById(R.id.calendar_view));
    customCalendarView.setEventListener(new CustomCalendarView.EventListener() {
        @Override
        public void onDayLongPress(Date date) {
            Toast.makeText(getContext(), timeFormatter.format(date), Toast.LENGTH_SHORT).show();
        }
    });

}

Answer 1

I found that I hadn't called super(context, attrs) from the constructor of the Custom View. Changing super(context) to super(context, attrs) within the constructor having context and attrs as their parameters have resoved my issue.