// 获取当前年月字符串(格式:2025-07) String getCurrentYearMonth() { final now = DateTime.now(); return '${now.year}-${now.month.toString().padLeft(2, '0')}'; } // 获取当前年份字符串 String getCurrentYear() { return DateTime.now().year.toString(); } // 获取当前月份字符串(带前导零) String getCurrentMonth() { return DateTime.now().month.toString().padLeft(2, '0'); }