Java 如何在运行时使用onCreateView而不是onCreate更改应用程序的主题

所以我现在有这个代码来更改我的应用程序的主题-

public class SettingsActivity extends AppCompatActivity{
public static int themeCheck = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (themeCheck == 1){
        setTheme(R.style.Dark);
    }
    else{
        setTheme(R.style.Light);
    }
    setContentView(R.layout.fragment_settings);
    }
    // some other code changing other stuff

我和我班上的另一个人一起做这个项目，他在编写实际的骨架代码，结果发现他使用了片段，没有将活动扩展到AppCompat。因此，我必须将代码与之合并的类如下所示-

public class SettingsFrament extends android.support.v4.app.Fragment 
implements MainActivityFragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
Bundle savedInstanceState) {
    View rootView = localInflater.inflate(R.layout.fragment_settings, 
    container, false);
    getActivity().setTitle(getString(R.string.settings_fragment_title));
    return rootView;

//This rootView and other bits that that guy gave me is redirecting the app 
//to my activity from the menu bar that he has.

我想知道如何将我的代码与这个类合并。（我不必合并它，我可以写下代码，只是不知道如何在onCreateView中使用setTheme和其他方法。）

---

任何帮助都将不胜感激。

请在onCreateView回调中尝试此功能

    final Context theme1 = new ContextThemeWrapper(getActivity(), R.style.yourCustomTheme1);
    final Context theme2 = new ContextThemeWrapper(getActivity(), R.style.yourCustomTheme2);

    LayoutInflater localInflater;

    getActivity().setTitle(getString(R.string.settings_fragment_title));

    if (themeCheck == 1){
         localInflater = inflater.cloneInContext(theme1);
    }
    else{
         localInflater = inflater.cloneInContext(theme2);
    }

    View rootView = localInflater.inflate(R.layout.fragment_settings,
            container, false);

    return rootView;

---

您是否尝试过

getActivity（）.setTheme（）

？，并且必须重新启动Activity也要检查