实现效果
- 验证 15 位或 18 位身份证号的格式
- 检验身份证号的有效性
- (BOOL)validateIDCardNumber:(NSString *)idCardNumber {
idCardNumber = [idCardNumber stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
NSInteger length =0;
if (!idCardNumber) {
return NO;
}else {
length = idCardNumber.length;
//不满足15位和18位，即身份证错误
if (length !=15 && length !=18) {
return NO;
}
}
// 省份代码
NSArray *areasArray = @[@"11",@"12", @"13",@"14", @"15",@"21", @"22",@"23", @"31",@"32", @"33",@"34", @"35",@"36", @"37",@"41", @"42",@"43", @"44",@"45", @"46",@"50", @"51",@"52", @"53",@"54", @"61",@"62", @"63",@"64", @"65",@"71", @"81",@"82", @"91"];
// 检测省份身份行政区代码
NSString *valueStart2 = [idCardNumber substringToIndex:2];
BOOL areaFlag =NO; //标识省份代码是否正确
for (NSString *areaCode in areasArray) {
if ([areaCode isEqualToString:valueStart2]) {
areaFlag =YES;
break;
}
}
if (!areaFlag) {
return NO;
}
NSRegularExpression *regularExpression;
NSUInteger numberofMatch;
int year =0;
//分为15位、18位身份证进行校验
switch (length) {
case 15:
//获取年份对应的数字
year = [idCardNumber substringWithRange:NSMakeRange(6,2)].intValue +1900;
if (year %4 ==0 || (year %100 ==0 && year %4 ==0)) {
//创建正则表达式 NSRegularExpressionCaseInsensitive：不区分字母大小写的模式
//测试出生日期的合法性
regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$" options:NSRegularExpressionCaseInsensitive error:nil];
}else {
//测试出生日期的合法性
regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$" options:NSRegularExpressionCaseInsensitive error:nil];
}
//使用正则表达式匹配字符串 NSMatchingReportProgress:找到最长的匹配字符串后调用block回调
numberofMatch = [regularExpression numberOfMatchesInString:idCardNumber options:NSMatchingReportProgress range:NSMakeRange(0, idCardNumber.length)];
if(numberofMatch >0) {
return YES;
}else {
return NO;
}
case 18:
year = [idCardNumber substringWithRange:NSMakeRange(6,4)].intValue;
if (year %4 ==0 || (year %100 ==0 && year %4 ==0)) {
regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$" options:NSRegularExpressionCaseInsensitive error:nil];//测试出生日期的合法性
}else {
regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$" options:NSRegularExpressionCaseInsensitive error:nil];//测试出生日期的合法性
}
numberofMatch = [regularExpression numberOfMatchesInString:idCardNumber options:NSMatchingReportProgress range:NSMakeRange(0, idCardNumber.length)];
if(numberofMatch >0) {
//1：校验码的计算方法 身份证号码17位数分别乘以不同的系数。从第一位到第十七位的系数分别为：7－9－10－5－8－4－2－1－6－3－7－9－10－5－8－4－2。将这17位数字和系数相乘的结果相加。
int S = [idCardNumber substringWithRange:NSMakeRange(0,1)].intValue*7 + [idCardNumber substringWithRange:NSMakeRange(10,1)].intValue *7 + [idCardNumber substringWithRange:NSMakeRange(1,1)].intValue*9 + [idCardNumber substringWithRange:NSMakeRange(11,1)].intValue *9 + [idCardNumber substringWithRange:NSMakeRange(2,1)].intValue*10 + [idCardNumber substringWithRange:NSMakeRange(12,1)].intValue *10 + [idCardNumber substringWithRange:NSMakeRange(3,1)].intValue*5 + [idCardNumber substringWithRange:NSMakeRange(13,1)].intValue *5 + [idCardNumber substringWithRange:NSMakeRange(4,1)].intValue*8 + [idCardNumber substringWithRange:NSMakeRange(14,1)].intValue *8 + [idCardNumber substringWithRange:NSMakeRange(5,1)].intValue*4 + [idCardNumber substringWithRange:NSMakeRange(15,1)].intValue *4 + [idCardNumber substringWithRange:NSMakeRange(6,1)].intValue*2 + [idCardNumber substringWithRange:NSMakeRange(16,1)].intValue *2 + [idCardNumber substringWithRange:NSMakeRange(7,1)].intValue *1 + [idCardNumber substringWithRange:NSMakeRange(8,1)].intValue *6 + [idCardNumber substringWithRange:NSMakeRange(9,1)].intValue *3;
//2：用加出来和除以11，看余数是多少？余数只可能有0－1－2－3－4－5－6－7－8－9－10这11个数字
int Y = S %11;
NSString *M =@"F";
NSString *JYM =@"10X98765432";
M = [JYM substringWithRange:NSMakeRange(Y,1)];// 3：获取校验位
NSString *lastStr = [idCardNumber substringWithRange:NSMakeRange(17,1)];
NSLog(@"%@",M);
NSLog(@"%@",[idCardNumber substringWithRange:NSMakeRange(17,1)]);
//4：检测ID的校验位
if ([lastStr isEqualToString:@"x"]) {
if ([M isEqualToString:@"X"]) {
return YES;
}else{
return NO;
}
}else{
if ([M isEqualToString:[idCardNumber substringWithRange:NSMakeRange(17,1)]]) {
return YES;
}else {
return NO;
}
}
}else {
return NO;
}
default:
return NO;
}
}
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