如何从 SupportMapFragment 获取片段扩展中的主要 Activity

Question

我有： MainActivity

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

使用这个简单的代码，我调用了从 SupportMapFragment

扩展而来的片段

MyFragment

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

但是 main 的值总是 null 。我如何发送或获取 MainActivity ?

Answer 1

改变

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

和

MainActivity main = (MainActivity) getActivity();