ios开发之常用正则表达式-优快云博客

本文链接：https://blog.youkuaiyun.com/shiyunjiangnan/article/details/48053519

本文提供了一套常用的正则表达式验证方法，包括邮箱、手机号码、车牌号等多种格式的有效性验证。通过将这些验证逻辑封装为独立的方法，提高了代码的重用性和项目的开发效率。

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在开发用户登录模块的时候,往往需要对用户名和密码进行一个条件判断,如果每次手写就显得水平有些low了,代码重用性不高,最好的方式就是把代码抽取取出来.

把以下代码抽取成一个.m文件,把方法名抽取成一个.h 文件,然后导入项目文件,在需要的地方进行类方法调用即可.

//邮箱

+ (BOOL) validateEmail:(NSString *)email

{

NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";

NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];

return [emailTest evaluateWithObject:email];

}

//手机号码验证

+ (BOOL) validateMobile:(NSString *)mobile

{

//手机号以13， 15，18开头，八个 \d 数字字符

NSString *phoneRegex = @"^((13[0-9])|(15[^4,\\D])|(18[0,0-9]))\\d{8}$";

NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",phoneRegex];

return [phoneTest evaluateWithObject:mobile];

}

//车牌号验证

+ (BOOL) validateCarNo:(NSString *)carNo

{

NSString *carRegex = @"^[\u4e00-\u9fa5]{1}[a-zA-Z]{1}[a-zA-Z_0-9]{4}[a-zA-Z_0-9_\u4e00-\u9fa5]$";

NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",carRegex];

NSLog(@"carTest is %@",carTest);

return [carTest evaluateWithObject:carNo];

}

//车型

+ (BOOL) validateCarType:(NSString *)CarType

{

NSString *CarTypeRegex = @"^[\u4E00-\u9FFF]+$";

NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",CarTypeRegex];

return [carTest evaluateWithObject:CarType];

}

//用户名

+ (BOOL) validateUserName:(NSString *)name

{

NSString *userNameRegex = @"^[A-Za-z0-9]{6,20}+$";

NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex];

BOOL B = [userNamePredicate evaluateWithObject:name];

return B;

}

//密码

+ (BOOL) validatePassword:(NSString *)passWord

{

NSString *passWordRegex = @"^[a-zA-Z0-9]{6,20}+$";

NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",passWordRegex];

return [passWordPredicate evaluateWithObject:passWord];

}

//昵称

+ (BOOL) validateNickname:(NSString *)nickname

{

NSString *nicknameRegex = @"^[\u4e00-\u9fa5]{4,8}$";

NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",nicknameRegex];

return [passWordPredicate evaluateWithObject:nickname];

}

//身份证号

+ (BOOL) validateIdentityCard: (NSString *)identityCard

{

BOOL flag;

if (identityCard.length <= 0) {

flag = NO;

return flag;

}

NSString *regex2 = @"^(\\d{14}|\\d{17})(\\d|[xX])$";

NSPredicate *identityCardPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];

return [identityCardPredicate evaluateWithObject:identityCard];

}