1. -(NSString *)birthdayStrFromIdentityCard:(NSString *)numberStr{
   
2.    
   
3.     if(numberStr.length == 0)
   
4.         return nil;
   
5.     NSMutableString *result = [NSMutableString stringWithCapacity:0];
   
6.     NSString *year = nil;
   
7.     NSString *month = nil;
   
8.    
   
9.     BOOL isAllNumber = YES;
   
10.     NSString *day = nil;
    
11.     if([numberStr length]<14)
    
12.         return result;
    
13.    
    
14.     //**截取前14位
    
15.     NSString *fontNumer = [numberStr substringWithRange:NSMakeRange(0, 13)];
    
16.    
    
17.     //**检测前14位否全都是数字;
    
18.     const char *str = [fontNumer UTF8String];
    
19.     const char *p = str;
    
20.     while (*p!='\0') {
    
21.         if(!(*p>='0'&&*p<='9'))
    
22.             isAllNumber = NO;
    
23.         p++;
    
24.     }
    
25.    
    
26.     if(!isAllNumber)
    
27.         return result;
    
28.    
    
29.     year = [numberStr substringWithRange:NSMakeRange(6, 4)];
    
30.     month = [numberStr substringWithRange:NSMakeRange(10, 2)];
    
31.     day = [numberStr substringWithRange:NSMakeRange(12,2)];
    
32.    
    
33.     [result appendString:year];
    
34.     [result appendString:@"-"];
    
35.     [result appendString:month];
    
36.     [result appendString:@"-"];
    
37.     [result appendString:day];
    
38.     return result;
    
39.    
    
40. }
    

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1. -(NSString *)birthdayStrFromIdentityCard:(NSString *)numberStr{
   
2.    
   
3.     if(numberStr.length == 0)
   
4.         return nil;
   
5.     NSMutableString *result = [NSMutableString stringWithCapacity:0];
   
6.     NSString *year = nil;
   
7.     NSString *month = nil;
   
8.    
   
9.     BOOL isAllNumber = YES;
   
10.     NSString *day = nil;
    
11.     if([numberStr length]<14)
    
12.         return result;
    
13.    
    
14.     //**截取前14位
    
15.     NSString *fontNumer = [numberStr substringWithRange:NSMakeRange(0, 13)];
    
16.    
    
17.     //**检测前14位否全都是数字;
    
18.     const char *str = [fontNumer UTF8String];
    
19.     const char *p = str;
    
20.     while (*p!='\0') {
    
21.         if(!(*p>='0'&&*p<='9'))
    
22.             isAllNumber = NO;
    
23.         p++;
    
24.     }
    
25.    
    
26.     if(!isAllNumber)
    
27.         return result;
    
28.    
    
29.     year = [numberStr substringWithRange:NSMakeRange(6, 4)];
    
30.     month = [numberStr substringWithRange:NSMakeRange(10, 2)];
    
31.     day = [numberStr substringWithRange:NSMakeRange(12,2)];
    
32.    
    
33.     [result appendString:year];
    
34.     [result appendString:@"-"];
    
35.     [result appendString:month];
    
36.     [result appendString:@"-"];
    
37.     [result appendString:day];
    
38.     return result;
    
39.    
    
40. }
    

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