iOS正则验证

        // 正则验证
        NSError *error;
        NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"^1\\d{10}$"
                                                                               options:NSRegularExpressionCaseInsensitive
                                                                                 error:&error];
        NSUInteger count = [regex numberOfMatchesInString:userPhone
                                                  options:NSRegularExpressionCaseInsensitive
                                                    range:NSMakeRange(0, [userPhone length])];
        // 格式验证失败
        if (count != 1) {
            ...
        }