SettingsActivity.java 文件源码

private void hideAdvancedPreferences(PreferenceGroup group) {
    if(mAdvancedSettings.showAll()) {
        return;
    }

    int c = 0;
    while(c < group.getPreferenceCount()) {
        Preference pref = group.getPreference(c);
        if(!mAdvancedSettings.isVisible(group, pref)) {
            group.removePreference(pref);
        } else {
            if(pref instanceof PreferenceGroup) {
                hideAdvancedPreferences((PreferenceGroup)pref);
            }
            c++;
        }
    }
}