fragment 中 切换主题

@Override
public View onCreateView(LayoutInflater inflater,
@Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

final Context contextThemeWrapper = new ContextThemeWrapper(
getActivity(), isDay ? R.style.day : R.style.night);
LayoutInflater localInflater = inflater
.cloneInContext(contextThemeWrapper);
View v = localInflater.inflate(R.layout.fragment_layout, container,
false);
return v;
}