android-xxxx must implement the inherited abstract method报错

public class ContactMainFragment extends Fragment implements OnClickListener
     {

@Override
public void onClick(View arg0) {
    // TODO Auto-generated method stub
    
}

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.show_left_fragment_btn:
            mSlidingMenu.showMenu(true);
            break;
        case R.id.show_right_fragment_btn:
            mSlidingMenu.showSecondaryMenu(true);
            break;
        case R.id.ivTitleName:
            if (isConnected())
                showStatusQuickAction(v);
            break;
        default:
            break;
        }
    }