iOS 验证输入内容

前言

平时开发中textField比较常用，比如限制输入等。本文主要讨论textField相关代理方法于正则表达式的结合。

相关方法

/**
 *  判断是否包含空格
 *
 *  @param str NSString
 *
 *  @return BOOL
 */
+ (BOOL)CheckisBlank:(NSString *)str{
    
    NSRange _range = [str rangeOfString:@" "];
    if (_range.location != NSNotFound) {
        //有空格
        return YES;
    }else {
        //没有空格
        return NO;
    }
}

/**
 *  判断是否包含中文
 *
 *  @param string NSString
 *
 *  @return BOOL
 */
+ (BOOL)checkIsChinese:(NSString *)string{
    
    for (int i=0; i<string.length; i++) {
        unichar ch = [string characterAtIndex:i];
        if (0x4E00 <= ch  && ch <= 0x9FA5) {
            return YES;
        }
    }
    return NO;
}


/**
 *  判断是否包含特殊字符
 *
 *  @param string NSString
 *
 *  @return BOOL
 */
+ (BOOL)isIncludeSpecialCharact: (NSString *)str {
    
    //***需要过滤的特殊字符：~￥#&*<>《》()[]{}【】^@/￡¤￥|§¨「」『』￠￢￣~@#￥&*（）——+|《》$_€。
    NSRange urgentRange = [str rangeOfCharacterFromSet: [NSCharacterSet characterSetWithCharactersInString: @"~￥#&*<>《》()[]{}【】^@/￡¤￥|§¨「」『』￠￢￣~@#￥&*（）——+|《》$_€"]];
    if (urgentRange.location == NSNotFound)
    {
        return NO;
    }
    return YES;
}



/**
 *  判断是否包含表情
 *
 *  @param string NSString
 *
 *  @return BOOL
 */
+ (BOOL)validateContainsEmoji:(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;
}

一些字符串验证方法

//验证手机号
+(BOOL)isMobileNumber:(NSString *)mobileNum{
    NSString *regex = @"^((13[0-9])|(147)|(15[^4,\\D])|(18[0,5-9]))\\d{8}$";
    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
    BOOL isMatch = [pred evaluateWithObject:mobileNum];
    return isMatch;
}

//验证车牌号
+(BOOL)validateCarNo:(NSString*)carNo{
    NSString *carRegex = @"^[A-Za-z]{1}[A-Za-z_0-9]{5}$";
    NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",carRegex];
    NSLog(@"carTest is %@",carTest);
    return [carTest evaluateWithObject:carNo];
}

//正则匹配用户身份证号15或18位
+ (BOOL)checkUserIdCard: (NSString *) idCard{
    NSString *pattern = @"(^[0-9]{15}$)|([0-9]{17}([0-9]|X)$)";
    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", pattern];
    BOOL isMatch = [pred evaluateWithObject:idCard];
    return isMatch;
}

// 正则匹配URL
+ (BOOL)checkURL : (NSString *) url{
    NSString *pattern = @"^[0-9A-Za-z]{1,50}";
    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", pattern];
    BOOL isMatch = [pred evaluateWithObject:url];
    return isMatch;
}

//正则匹配用户密码6-18位数字和字母组合
+ (BOOL)checkPassword:(NSString *) password{
    NSString *pattern = @"^(?![0-9]+$)(?![a-zA-Z]+$)[a-zA-Z0-9]{6,18}";
    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", pattern];
    BOOL isMatch = [pred evaluateWithObject:password];
    return isMatch;
}

总结

以上就是自己总结的常用正则和输入限制，后期会持续更新。。。