updateStylePreference static method
更新风格偏好
Implementation
static Future<void> updateStylePreference(String style, bool liked) async {
final prefs = await SharedPreferences.getInstance();
final Map<String, int> styles = await _getPreferenceMap(_keyStylePreferences);
styles[style] = (styles[style] ?? 0) + (liked ? 1 : -1);
await prefs.setString(_keyStylePreferences, jsonEncode(styles));
}