PreferencesListFragment.java 文件源码

/**
 * Gets the root of the preference hierarchy that this activity is showing.
 * 
 * @return The {@link PreferenceScreen} that is the root of the preference
 *         hierarchy.
 */
public PreferenceScreen getPreferenceScreen() {
    try {
        Method m = PreferenceManager.class.getDeclaredMethod("getPreferenceScreen");
        m.setAccessible(true);
        return (PreferenceScreen) m.invoke(mPreferenceManager);
    } catch(Exception e) {
        Log.e("[PreferencesListFragment] getPreferenceScreen " + e);
    }

    return null;
}