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Tinashe Gwariro
4,691 PointsImplementing Interface in MainAcvtivity
I have added the implement in the MainActivity several times but I keep getting an error code
public class NewsFragment extends Fragment {
public interface NewsListener {
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;
}
}
public class MainActivity extends AppCompatActivity implements NewsFragment.OnNewsItemSelected {
@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();
}
}
1 Answer

Rares Conea
Courses Plus Student 15,000 PointsThat's because you forgot to implement the method from the interface, add public void onNewsItemSelected(int index){} in the MainActivity class and it will work.