Question

此方法getSupportFragmentManager()属于FragmentActivity，如果我只使用extends Fragment？

，如何替换此方法

我收到此错误

错误：（30,42）错误：找不到符号方法getSupportFragmentManager（）

在public class MapsFragment extends FragmentActivity中使用此代码：

public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
  final View view = inflater.inflate(R.layout.fragment_maps,container, false);   
  if (mMap == null) {
    // Try to obtain the map from the SupportMapFragment.
    mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
    // Check if we were successful in obtaining the map.
    if (mMap != null) {
      mMap.addMarker(new MarkerOptions().position(new LatLng(57.70, 11.96)).title("Marker"));
      }
    }

Answer 1

使用

mMap = ((SupportMapFragment) getActivity().getSupportFragmentManager().findFragmentById(R.id.map)).getMap();

而不是

mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();

Answer 2

如果要从Fragment访问片段管理器，甚至从支持库，您应该使用 getFragmentManager（）方法。

http://developer.android.com/reference/android/app/Fragment.html#getFragmentManager()

http://developer.android.com/reference/android/support/v4/app/Fragment.html#getFragmentManager()

找不到符号方法＆＃34; getSupportFragmentManager（）＆＃34;

2 个答案: