创建一个nspredicate的分类:nspredicate+HMAdditions
在.h中:
#import <Foundation/Foundation.h> @interface nspredicate (HMAdditions) + (BOOL)checkEmail:(Nsstring *)email; + (BOOL)checkIDNumber:(Nsstring *)IDNumber; @end
在.m中
#import "nspredicate+HMAdditions.h" @implementation nspredicate (HMAdditions) + (BOOL)checkEmail:(Nsstring *)email { Nsstring *regex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; nspredicate *predicate = [self predicateWithFormat:@"SELF MATCHES %@",regex]; return [predicate evaluateWithObject:email]; } + (BOOL)checkIDNumber:(Nsstring *)IDNumber { BOOL flag = NO; if (IDNumber.length <= 0) { return flag; } Nsstring *regex = @"^(^[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 *predicate = [self predicateWithFormat:@"SELF MATCHES %@",regex]; flag = [predicate evaluateWithObject:IDNumber]; //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(flag) { if(IDNumber.length==18) { //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",@"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",@"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 = [[IDNumber 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= [IDNumber 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 flag; }else { flag = NO; return flag; } }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 flag; } else { flag = NO; return flag; } } } else { flag = NO; return flag; } } else { return flag; } } @end
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