新建一个字符串分类：NSString(Check),定义类方法更方便
.h文件
#import <Foundation/Foundation.h> @interface NSString (Check) //验证用户名输入时必须以字母开头 + (BOOL)checkUserName:(NSString *)userName showWainingInView:(UIView *)view; //验证用户名输入时必须为手机号 + (BOOL)checkTelPhone:(NSString *)telPhone showWainingInView:(UIView *)view; //验证邮箱是否输入正确 + (BOOL)checkEmail:(NSString *)email showWaingInView:(UIView *)view; //验证用户名是否为普通账号 + (BOOL)isUserName:(NSString *)userName; //验证用户名是否为手机号 + (BOOL)isTelPhone:(NSString *)telPhone; @end
.m文件
#import "NSString+Check.h" @implementation NSString (Check) //验证用户名输入时必须以字母开头 + (BOOL)checkUserName:(NSString *)userName showWainingInView:(UIView *)view { //判断是否以字母开头 NSString *regex = @"^[A-Za-z][A-Za-z0-9]*$"; NSPredicate *pre = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; BOOL isMatch = [pre evaluateWithObject:userName]; if (!isMatch) { [MBProgressHUD showError:@"用户名必须以字母开头" toView:view]; dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ [MBProgressHUD hideHUDForView:view]; }); return NO; } return YES; } //验证用户名输入时必须为手机号 + (BOOL)checkTelPhone:(NSString *)telPhone showWainingInView:(UIView *)view { NSString *regex = @"^[1][358][0-9]{9}$"; NSPredicate *pre = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; BOOL isMatch = [pre evaluateWithObject:telPhone]; if (!isMatch) { [MBProgressHUD showError:@"手机号格式不正确" toView:view]; dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ [MBProgressHUD hideHUDForView:view]; }); return NO; } return YES; } //验证邮箱是否输入正确 + (BOOL)checkEmail:(NSString *)email showWaingInView:(UIView *)view{ NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex]; BOOL isMatch = [emailTest evaluateWithObject:email]; if (!isMatch) { [MBProgressHUD showError:@"邮箱格式不正确" toView:view]; dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.8 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ [MBProgressHUD hideHUDForView:view]; }); return NO; } return YES; } //验证用户名是否为普通账号 + (BOOL)isUserName:(NSString *)userName{ NSString *regex = @"^[A-Za-z][A-Za-z0-9]*$"; NSPredicate *pre = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; BOOL isMatch = [pre evaluateWithObject:userName]; if (!isMatch) { return NO; } return YES; } //验证用户名是否为手机号 + (BOOL)isTelPhone:(NSString *)telPhone{ NSString *regex = @"^[1][358][0-9]{9}$"; NSPredicate *pre = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; BOOL isMatch = [pre evaluateWithObject:telPhone]; if (!isMatch) { return NO; } return YES; } @end
其他参考：http://my.oschina.net/zhuzhu1223/blog/422157
iOS开发中邮箱，电话号码，身份证，密码，昵称，车牌号正则表达式验证
//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]; }