正则表达式

1、判断用户名，在2－16位

-(BOOL)CheckInput:(NSString *)_text

 

{

    NSString *Regex = @"^\\w{2,16}$";

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

    return [emailTest evaluateWithObject:_text];

}

 

 

2、判断手机号码，1开头的十一位数字

-(BOOL)CheckInput:(NSString *)_text

{

    NSString *Regex = @"1\\d{10}";

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

    return [emailTest evaluateWithObject:_text];

}

 

 

3、判断邮箱

-(BOOL)CheckInput:(NSString *)_text

{

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

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

    return [emailTest evaluateWithObject:_text];

}

 

 

 

4、判断密码，6－16位 

-(BOOL)CheckInput:(NSString *)_text

{

    NSString *Regex = @"\\w{6,16}";

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

    return [emailTest evaluateWithObject:_text];

}