是否包含中文

#pragma mark - 检验是否包含中文
+ (BOOL)isStringContainChinese:(NSString *)text{

    //第一种方法
//    for(NSInteger i=0; i < [text length]; i++){
//        int a = [text characterAtIndex:i];
//        if( a > 0x4e00 && a < 0x9fff)
//            return YES;
//    }
//    return false;

    //第二种方法
    NSInteger length = [text length];

    for (int i=0; i < length; i++)
    {
        NSRange range = NSMakeRange(i, 1);
        NSString *subString = [text substringWithRange:range];
        const char *cString = [subString UTF8String];
        if (strlen(cString) == 3)
        {
            return YES;
        }
    }
    return false;
}

是否包含表情

#pragma mark - 检验字符串是否包含表情
+ (BOOL)stringContainsEmoji:(NSString *)text{

    __block BOOL returnValue = NO;

    [text enumerateSubstringsInRange:NSMakeRange(0, text.length) options:NSStringEnumerationByComposedCharacterSequences usingBlock:^(NSString * _Nullable substring, NSRange substringRange, NSRange enclosingRange, BOOL * _Nonnull 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;  
}