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Android Android Fragments Introducing Fragments Handling Clicks

im failling to implement help. thanx

where im i going wrong

public class NewsFragment extends Fragment {
    public interface NewsListener{
       void onNewsItemSelected();
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_news, container, false);
        return view;

public class MainActivity extends AppCompatActivity {
    public void onCreate(Bundle savedInstanceState) {

        NewsFragment newsFragment = new NewsFragment();
        FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        fragmentTransaction.add(R.id.placeholder, newsFragment);
  public class MainActivity extends AppCompatActivity implements NewsFragment.NewsListener {
    public void onNewsItemSelected () {




oky i have figured it out

i have reomoved the second class and implement NewsFragment.NewsListener on the main class