SettingsActivity.java 文件源码

private void setupNightModeSwitch() {
    // 设置夜间模式
    uiManager = (UiModeManager) getActivity().getSystemService(Context.UI_MODE_SERVICE);
    nightModeSwitch = (SwitchPreference) getPreferenceManager().findPreference("night_mode_switch");
    nightModeSwitch.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
        @Override
        public boolean onPreferenceChange(Preference preference, Object newValue) {
            boolean nextNightMode = !PreferenceHelper.isNightModeEnabled();
            if (nextNightMode) {
                uiManager.setNightMode(UiModeManager.MODE_NIGHT_YES);
            } else {
                uiManager.setNightMode(UiModeManager.MODE_NIGHT_NO);
            }
            return true;
        }
    });
}