FragmentTabHost 未在 Android 中的 Fragment 内创建视图

我在选项卡主机上更改视图时遇到问题 - 当我选择选项卡时，内容保持空白。

据我所知，onCreateView子片段没有被调用. onMenuCreate运行良好，因为菜单按预期变化。

   public class PatientTabFragment extends Fragment {
    private FragmentTabHost mTabHost;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        mTabHost = new FragmentTabHost(getActivity());
        mTabHost.setup(getActivity(), getChildFragmentManager());

        mTabHost.addTab(mTabHost.newTabSpec("simple").setIndicator("Info"),
                NewPatientFragment.class, null);
        mTabHost.addTab(mTabHost.newTabSpec("contacts").setIndicator("Notes"),
                NoteListFragment.class, null);


        return mTabHost;
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        mTabHost = null;
    }
}

根据the docs http://developer.android.com/reference/android/support/v4/app/FragmentTabHost.html:

特殊 TabHost 允许在其选项卡中使用 Fragment 对象 内容。将其放置在视图层次结构中时，充气后 您必须调用 setup(Context, FragmentManager, int) 来 完成tab主机的初始化。

（强调我的）

所以我建议这样：

   public class PatientTabFragment extends Fragment {
    private FragmentTabHost mTabHost;
    private boolean createdTab = false;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        mTabHost = new FragmentTabHost(getActivity());
        mTabHost.setup(getActivity(), getChildFragmentManager());

        mTabHost.addTab(mTabHost.newTabSpec("simple").setIndicator("Info"),
                NewPatientFragment.class, null);
        mTabHost.addTab(mTabHost.newTabSpec("contacts").setIndicator("Notes"),
                NoteListFragment.class, null);


        return mTabHost;
    }

    public void onResume(){
        if (!createdTab){
          createdTab = true;
          mTabHost.setup(getActivity(), getActivity().
                         getSupportedFragmentManager());
        }
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        mTabHost = null;
    }
}