iOS 的正则表达式使用

最新推荐文章于 2022-11-06 16:54:11 发布

Jack X H LAO

最新推荐文章于 2022-11-06 16:54:11 发布

阅读量396

点赞数

CC 4.0 BY-SA版权

分类专栏： iOS

本文链接：https://blog.youkuaiyun.com/Lx_Lao/article/details/79385655

iOS 专栏收录该内容

6 篇文章

订阅专栏

本文介绍了一套实用的文本验证方法，包括emoji检测、手机号验证、纯数字验证、IP地址验证及邮箱验证等。每种验证都提供了具体的正则表达式和实现代码，适用于iOS和其他Objective-C应用开发。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

判断文本是否含有 emoji（部分第三方 emoji 不能识别）

+ (BOOL)isContainsEmoji:(NSString *)string {
    __block BOOL returnValue = NO;
    [string enumerateSubstringsInRange:NSMakeRange(0, [string length]) options:NSStringEnumerationByComposedCharacterSequences usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
        const unichar hs = [substring characterAtIndex:0];
        if (0xd800 <= hs && hs <= 0xdbff) {
            if (substring.length > 1) {
                const unichar ls = [substring characterAtIndex:1];
                const int uc = ((hs - 0xd800) * 0x400) + (ls - 0xdc00) + 0x10000;
                if (0x1d000 <= uc && uc <= 0x1f77f) {
                    returnValue = YES;
                }
            }
        }
        else if (substring.length > 1) {
            const unichar ls = [substring characterAtIndex:1];
            if (ls == 0x20e3) {
                returnValue = YES;
            }
        }
        else {
            if (0x2100 <= hs && hs <= 0x27ff) {
                returnValue = YES;
            } else if (0x2B05 <= hs && hs <= 0x2b07) {
                returnValue = YES;
            } else if (0x2934 <= hs && hs <= 0x2935) {
                returnValue = YES;
            } else if (0x3297 <= hs && hs <= 0x3299) {
                returnValue = YES;
            } else if (hs == 0xa9 || hs == 0xae || hs == 0x303d || hs == 0x3030 || hs == 0x2b55 || hs == 0x2b1c || hs == 0x2b1b || hs == 0x2b50) {
                returnValue = YES;
            }
        }
    }];
    return returnValue;
}

判断手机号

+ (BOOL)isMobileNum:(NSString *)mobileNum {
    /**
     * 手机号码
     * 移动：134[0-8],135,136,137,138,139,150,151,157,158,159,182,183,187,188
     * 联通：130,131,132,152,155,156,185,186
     * 电信：133,1349,153,180,189
     */
    NSString * MOBILE = @"^1(3[0-9]|5[0-35-9]|8[0235-9])\\d{8}$";
    /**
     * 中国移动：China Mobile
     * 134[0-8],135,136,137,138,139,150,151,157,158,159,182,183,187,188
     */
    NSString * CM = @"^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\\d)\\d{7}$";
    /**
     * 中国联通：China Unicom
     * 130,131,132,152,155,156,185,186
     */
    NSString * CU = @"^1(3[0-2]|5[256]|8[56])\\d{8}$";
    /**
     * 中国电信：China Telecom
     * 133,1349,153,180,189,181(增加)
     */
    NSString * CT = @"^1((33|53|8[019])[0-9]|349)\\d{7}$";
    /**
     * 大陆地区固话及小灵通
     * 区号：010,020,021,022,023,024,025,027,028,029
     * 号码：七位或八位
     */
    NSString * PHS = @"^0(10|2[0-5789]|\\d{3})\\d{7,8}$";
    
    NSPredicate *regextestmobile    = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBILE];
    NSPredicate *regextestcm        = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM];
    NSPredicate *regextestcu        = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU];
    NSPredicate *regextestct        = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT];
    NSPredicate *regextestPHS       = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", PHS];
    
    if (([regextestmobile evaluateWithObject:mobileNum] == YES)
        || ([regextestcm evaluateWithObject:mobileNum] == YES)
        || ([regextestct evaluateWithObject:mobileNum] == YES)
        || ([regextestcu evaluateWithObject:mobileNum] == YES)
        || ([regextestPHS evaluateWithObject:mobileNum] == YES)){
        return YES;
    }
    else{
        return NO;
    }
}

判断纯数字

+ (BOOL)isNumber:(NSString *)number {
    NSString *numberRegex = @"^[0-9]*$";
    NSPredicate *numberPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", numberRegex];
    BOOL isNumber = [numberPredicate evaluateWithObject:number];
    return isNumber;
}

判断 IP 地址

+ (BOOL)isIpAddress:(NSString *)ip {
    NSString *ipRegex = @"(\\d{1,2}|1\\d\\d|2[0-4]\\d|25[0-5])\\.(\\d{1,2}|1\\d\\d|2[0-4]\\d|25[0-5])\\.(\\d{1,2}|1\\d\\d|2[0-4]\\d|25[0-5])\\.(\\d{1,2}|1\\d\\d|2[0-4]\\d|25[0-5])";
    NSPredicate *ipPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", ipRegex];
    BOOL isIp = [ipPredicate evaluateWithObject:ip];
    return isIp;
}

判断邮箱

+ (BOOL)isEmail:(NSString *)email {
    NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
    NSPredicate *emailPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
    BOOL isEmail = [emailPredicate evaluateWithObject:email];
    return isEmail;
}