小编Art*_*ino的帖子

在我的项目中，我使用带有标签的导航抽屉。在一个标签中，我想调用一个谷歌地图，但是我遇到了这个错误：

Error: incompatible types: Fragment cannot be converted to MapFragment

包含地图的片段：

public class PrimaryFragment extends Fragment implements OnMapReadyCallback{

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.primary_layout,container,false);
    }

    @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        MapFragment mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
    }

    @Override
    public void onMapReady(GoogleMap googleMap) {
        //toDO 
    }
}

标签片段

public class TabFragment extends Fragment {

public static TabLayout tabLayout;
public static ViewPager viewPager;
public static int int_items = 3 …