js版或OC、Java版的都容易找到，Dart版的比较少，mark一下吧。
// 校验身份证合法性bool verifyCardId(String cardId) {const Map city = {11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古", 21: "辽宁", 22: "吉林", 23: "黑龙江 ", 31: "上海", 32: "江苏", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东", 41: "河南", 42: "湖北 ", 43: "湖南", 44: "广东", 45: "广西", 46: "海南", 50: "重庆", 51: "四川", 52: "贵州", 53: "云南", 54: "西藏 ", 61: "陕西", 62: "甘肃", 63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门", 91: "国外 "};String tip = '';bool pass = true;RegExp cardReg = RegExp(r'^\d{6}(18|19|20)?\d{2}(0[1-9]|1[012])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$');if(cardId == null || cardId.isEmpty || !cardReg.hasMatch(cardId)) {tip = '身份证号格式错误';print(tip);pass = false;return pass;}if(city[int.parse(cardId.substring(0,2))] == null) {tip = '地址编码错误';print(tip);pass = false;return pass;}// 18位身份证需要验证最后一位校验位，15位不检测了，现在也没15位的了if (cardId.length == 18) {List numList = cardId.split('');//∑(ai×Wi)(mod 11)//加权因子List factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];//校验位List parity = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2];int sum = 0;int ai = 0;int wi = 0;for (var i = 0; i < 17; i++) {ai = int.parse(numList[i]);wi = factor[i];sum += ai * wi;}var last = parity[sum % 11];if (parity[sum % 11].toString() != numList[17]) {tip = "校验位错误";print(tip);pass = false;}}else {tip = '身份证号不是18位';print(tip);pass = false;}// print('证件格式$pass');return pass;}// 根据身份证号获取年龄int getAgeFromCardId(String cardId) {bool isRight = verifyCardId(cardId);if(!isRight) {return 0;}int len = (cardId + "").length;String strBirthday = "";if (len == 18) { //处理18位的身份证号码从号码中得到生日和性别代码strBirthday = cardId.substring(6, 10) + "-" + cardId.substring(10, 12) + "-" + cardId.substring(12, 14);}if (len == 15) {strBirthday = "19" + cardId.substring(6, 8) + "-" + cardId.substring(8, 10) + "-" + cardId.substring(10, 12);}int age = getAgeFromBirthday(strBirthday);return age;}// 根据出生日期获取年龄int getAgeFromBirthday(String strBirthday) {if(strBirthday == null || strBirthday.isEmpty) {print('生日错误');return 0;}DateTime birth = DateTime.parse(strBirthday);DateTime now = DateTime.now();int age = now.year - birth.year;//再考虑月、天的因素if (now.month < birth.month || (now.month == birth.month && now.day < birth.day)) {age --;}return age;}// 根据身份证获取性别String getSexFromCardId(String cardId) {String sex = "";bool isRight = verifyCardId(cardId);if (!isRight) {return sex;}if (cardId.length == 18) {if (int.parse(cardId.substring(16, 17)) % 2 == 1) {sex = "男";} else {sex = "女";}}if (cardId.length == 15) {if (int.parse(cardId.substring(14, 15)) % 2 == 1) {sex = "男";} else {sex = "女";}}return sex;}
