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Android Android Fragments Introducing Fragments Handling Clicks

Jerry Yu
PLUS
Jerry Yu
Courses Plus Student 5,033 Points

Import NewsFragment in MainActivity

I think I need to import the NewsFragment in MainActivity when MainActivity implements NewsFragment. Do you know what the import statement should be? I don't know the app's name.

NewsFragment.java
public class NewsFragment extends Fragment {
  public interface NewsListener {
    public void onNewsItemSelected(int index); 
  }
  @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_news, container, false);
        return view;
    }
}
MainActivity.java
public class MainActivity extends AppCompatActivity implements NewsListener {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        NewsFragment newsFragment = new NewsFragment();
        FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        fragmentTransaction.add(R.id.placeholder, newsFragment);
        fragmentTransaction.commit();
    }

    public void onNewsItemSelected(int index) {

    }
}

1 Answer

Seth Kroger
Seth Kroger
56,413 Points

I don't think you need to import it for the exercise. Because the interface you want to implement is an inner interface, inside another class, you need to state the main class before the interface: implements NewsFragment.NewsListener