PreferenceFragment.java 文件源码

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    if (mHavePrefs) {
        bindPreferences();
    }

    mInitDone = true;

    if (savedInstanceState != null) {
        Bundle container = savedInstanceState.getBundle(PREFERENCES_TAG);
        if (container != null) {
            final PreferenceScreen preferenceScreen = getPreferenceScreen();
            if (preferenceScreen != null) {
                preferenceScreen.restoreHierarchyState(container);
            }
        }
    }
}