正则表达式集锦(一)

1、正则表达式（0.0-9.9）

- (BOOL)validateRebt:(NSString *)text

{

    NSPredicate *pred = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@",@"^(\\d|9)(\\.\\d)?$"]; 

    if (text.length ==0) {

        returnYES;

    }

    return [predevaluateWithObject:text];

}

2、正则表达式（0.00 - 999999.99）

- (BOOL)validatePrice:(NSString *)text

{

    //

    NSPredicate *pred = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@",@"^\\d{1,6}(\\.\\d{1,2})?$"];

    

    if (text.length ==0) {

        

        returnYES;

    }

    

    return [predevaluateWithObject:text];

}

3、正则表达式（0 - 9999）

- (BOOL)validateNum:(NSString *)text

{

    // (\\d{0,})?

    NSPredicate *pred = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@",@"([1-9][0-9]＊)|([0])"];

    

    if (text.length ==0) {

        returnYES;

    }

    

    return [predevaluateWithObject:text];

}

4、正则表达式：判断是否是一个有效的邮箱地址

- (BOOL)isValidateEmail:(NSString *)Email

{

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

    NSPredicate *emailTest = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@",emailCheck];

    return [emailTestevaluateWithObject:Email];

}

5、正则表达式：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 = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@",carRegex];

    return [carTestevaluateWithObject:carNo];

}

6、正则表达式：车型

- (BOOL) validateCarType:(NSString *)CarType

{

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

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

    return [carTestevaluateWithObject:CarType];

}

7、正则表达式：判断中文

- (BOOL)validateChinese:(NSString *)chinese

{

    NSString *chineseRegex =@"^[\u4e00-\u9fa5]{0,}$";

    NSPredicate *passWordPredicate = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@",chineseRegex];

    return [passWordPredicateevaluateWithObject:chinese];

}

8、正则表达式：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 = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@",regex2];

    return [identityCardPredicateevaluateWithObject:identityCard];

}

9、正则表达式：判断字符串是否全部为数字

- (BOOL)isAllNmubersWithText:(NSString *)text

{

    //^[0-9]*$

    NSString *numbers =@"^[0-9]+$";

    NSPredicate *numbersTest = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@",numbers];

    return [numbersTestevaluateWithObject:text];

}

10、正则表达式：小数点后两位，整数位数自定义（numbers=0表示整数位无限制，numbers>0表示整数位限制为numbers位）

+(BOOL)validateNumber:(NSString *)text withIntegerNumber:(int)numbers

{

    if (numbers>0) {

        NSString *str = [NSStringstringWithFormat:@"^\\d{1,%d}(\\.\\d{1,2})?$",numbers];

        NSPredicate *pred = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@", str];

        if (text.length ==0) {

            returnYES;

        }

        return [predevaluateWithObject:text];

    }else{

        NSPredicate *pred = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@",@"^(?!0\\d)\\d+(\\.\\d{1,2})?$"];

        if (text.length ==0) {

            returnYES;

        }

        return [predevaluateWithObject:text];

    }

}