網上看到的，還不錯，挺齊全的，轉過來收藏。

原文出處：http://www.2cto.com/kf/201311/256494.html

//郵箱 + (BOOL) validateEmail:(NSString *)email {     NSString *emailRegex = @"[A-Z0-9a-z._%+-][email protected][A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";     NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];     return [emailTest evaluateWithObject:email]; } //手機號碼驗證 + (BOOL) validateMobile:(NSString *)mobile {     //手機號以13， 15，18開頭，八個 \d 數字字元     NSString *phoneRegex = @"^((13[0-9])|(15[^4,\\D])|(18[0,0-9]))\\d{8}$";     NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",phoneRegex];     return [phoneTest evaluateWithObject:mobile]; } //車牌號驗證 + (BOOL) validateCarNo:(NSString *)carNo {     NSString *carRegex = @"^[\u4e00-\u9fa5]{1}[a-zA-Z]{1}[a-zA-Z_0-9]{4}[a-zA-Z_0-9_\u4e00-\u9fa5]$";     NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",carRegex];     NSLog(@"carTest is %@",carTest);     return [carTest evaluateWithObject:carNo]; } //車型 + (BOOL) validateCarType:(NSString *)CarType {     NSString *CarTypeRegex = @"^[\u4E00-\u9FFF]+$";     NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",CarTypeRegex];     return [carTest evaluateWithObject:CarType]; } //使用者名稱 + (BOOL) validateUserName:(NSString *)name {     NSString *userNameRegex = @"^[A-Za-z0-9]{6,20}+$";     NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex];     BOOL B = [userNamePredicate evaluateWithObject:name];     return B; } //密碼 + (BOOL) validatePassword:(NSString *)passWord {     NSString *passWordRegex = @"^[a-zA-Z0-9]{6,20}+$";     NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",passWordRegex];     return [passWordPredicate evaluateWithObject:passWord]; } //暱稱 + (BOOL) validateNickname:(NSString *)nickname {     NSString *nicknameRegex = @"^[\u4e00-\u9fa5]{4,8}$";     NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",nicknameRegex];     return [passWordPredicate evaluateWithObject:nickname]; } //身份證號 + (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]; }