/// 文本处理工具类 class TextUtil { static bool isEmpty(String? text) { return (null == text || text.isEmpty); } static bool isNotEmpty(String? text) { return (null != text && text.isNotEmpty); } } /// 解析后端下发的字符串数组:非数组(null/空串/对象/数字)一律给空数组, /// 数组内的 null 丢掉,非字符串元素转字符串 List parseStringList(dynamic value) { if (value is! List) return []; return value.where((e) => e != null).map((e) => e.toString()).toList(); }