项目需求是用户输入身份证号自动匹配出年龄和性别
首先是要判断身份证号是否合法
#pragma mark -- 判断身份证号是否合法
- (BOOL)judgeIdentityStringValid:(NSString *)identityString {
if (identityString.length != 18) return NO;
// 正则表达式判断基本 身份证号是否满足格式
NSString *regex2 = @"^(^[1-9]\\d{7}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])\\d{3}$)|(^[1-9]\\d{5}[1-9]\\d{3}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])((\\d{4})|\\d{3}[Xx])$)$";
NSPredicate *identityStringPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
//如果通过该验证，说明身份证格式正确，但准确性还需计算
if(![identityStringPredicate evaluateWithObject:identityString]) return NO;
//** 开始进行校验 *//
//将前17位加权因子保存在数组里
NSArray *idCardWiArray = @[@"7", @"9", @"10", @"5", @"8", @"4", @"2", @"1", @"6", @"3", @"7", @"9", @"10", @"5", @"8", @"4", @"2"];
//这是除以11后，可能产生的11位余数、验证码，也保存成数组
NSArray *idCardYArray = @[@"1", @"0", @"10", @"9", @"8", @"7", @"6", @"5", @"4", @"3", @"2"];
//用来保存前17位各自乖以加权因子后的总和
NSInteger idCardWiSum = 0;
for(int i = 0;i < 17;i++) {
NSInteger subStrIndex = [[identityString substringWithRange:NSMakeRange(i, 1)] integerValue];
NSInteger idCardWiIndex = [[idCardWiArray objectAtIndex:i] integerValue];
idCardWiSum+= subStrIndex * idCardWiIndex;
}
//计算出校验码所在数组的位置
NSInteger idCardMod=idCardWiSum%11;
//得到最后一位身份证号码
NSString *idCardLast= [identityString substringWithRange:NSMakeRange(17, 1)];
//如果等于2，则说明校验码是10，身份证号码最后一位应该是X
if(idCardMod==2) {
if(![idCardLast isEqualToString:@"X"]||[idCardLast isEqualToString:@"x"]) {
return NO;
}
}
else{
//用计算出的验证码与最后一位身份证号码匹配，如果一致，说明通过，否则是无效的身份证号码
if(![idCardLast isEqualToString: [idCardYArray objectAtIndex:idCardMod]]) {
return NO;
}
}
return YES;
}
然后是在网上找到得到性别的方法
-(NSString *)sexStrFromIdentityCard:(NSString *)numberStr{
NSString *result = nil;
BOOL isAllNumber = YES;
if([numberStr length]<17)
return result;
//**截取第17为性别识别符
NSString *fontNumer = [numberStr substringWithRange:NSMakeRange(16, 1)];
//**检测是否是数字;
const char *str = [fontNumer UTF8String];
const char *p = str;
while (*p!='\0') {
if(!(*p>='0'&&*p<='9'))
isAllNumber = NO;
p++;
}
if(!isAllNumber)
return result;
int sexNumber = [fontNumer integerValue];
if(sexNumber%2==1)
result = @"男";
///result = @"M";
else if (sexNumber%2==0)
result = @"女";
//result = @"F";
return result;
}
没有找到正确的得出年龄的方法
所以就自己一步一步截取字符串 拼接 最后得出年龄 觉得会有更好的方法
-(NSString *)ageStrFromIdentityCard:(NSString *)numberStr{
if (numberStr.length > 0) {//身份证号为******19920319****
NSString *dateSt = [numberStr substringWithRange:NSMakeRange(6, 8)];//19920319
NSMutableString *dateS = [NSMutableString stringWithFormat:@"%@", dateSt];
[dateS insertString:@"-" atIndex:4];//1992-0319
[dateS insertString:@"-" atIndex:7];//1992-03-19
NSString *dateStr = [NSString stringWithFormat:@"%@ 00:00:01",dateS];
NSCalendar *calendar = [NSCalendar currentCalendar];
// 需要对比的时间数据
NSCalendarUnit unit = NSCalendarUnitYear | NSCalendarUnitMonth
| NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
NSDateFormatter *format=[[NSDateFormatter alloc] init];
[format setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate *fromdate=[format dateFromString:dateStr];
NSTimeZone *fromzone = [NSTimeZone systemTimeZone];
NSInteger frominterval = [fromzone secondsFromGMTForDate: fromdate];
NSDate *fromDate = [fromdate dateByAddingTimeInterval: frominterval];
NSLog(@"fromdate=%@",fromDate);
NSDate *date = [NSDate date];
NSTimeZone *zone = [NSTimeZone systemTimeZone];
NSInteger interval = [zone secondsFromGMTForDate: date];
NSDate *localeDate = [date dateByAddingTimeInterval: interval];
NSLog(@"enddate=%@",localeDate);
NSDateComponents *components = [calendar components:unit fromDate:fromDate toDate:localeDate options:0];
NSInteger year = [components year];//年
NSLog(@"%d",year);
return [NSString stringWithFormat:@"%d",year];
}
return nil;
}
