如何從SupportMapFragment

Question

得到的主要活動在片段extedend我： MainActivity

fragment = new ListReportsFragment(); 
FragmentManager fragmentManager = getSupportFragmentManager(); 
fragmentManager.beginTransaction().replace(R.id.content, fragment).commit(); 

有了這個簡單的代碼，我打電話一framgment從SupportMapFragment

MyFragment

擴展

public class MyFragment extends SupportMapFragment { 
    public void onActivityCreated(Bundle savedInstanceState) { 
     super.onActivityCreated(savedInstanceState); 
     MainActivity main = (MainActivity) getParentFragment().getActivity() 
    } 
} 

但是main的值始終爲null。我如何發送或獲得MainActivity？

Answer 1

變化

MainActivity main = (MainActivity) getParentFragment().getActivity(); 

與

MainActivity main = (MainActivity) getActivity();