iOS 判斷字串是否含有Emoji表情

測試 iOS12 表情.

在蘋果新的表情中, 表情字串長度在1~14位. 以下只命中第一位, 如果發現錯誤命中, 請加入多位判斷.

- (BOOL)stringContainsEmoji:(NSString *)string
{
    
    __block BOOL returnValue = NO;
    [string enumerateSubstringsInRange:NSMakeRange(0, [string length])
                               options:NSStringEnumerationByComposedCharacterSequences
                            usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
                                if (substring.length > 0) {
                                    const unichar hs = [substring characterAtIndex:0];
                                    if (0x2194 <= hs && hs <= 0x2199) { returnValue = YES; }
                                    if (0x23e9 <= hs && hs <= 0x23fa) { returnValue = YES; }
                                    if (0x2600 <= hs && hs <= 0x2604) { returnValue = YES; }
                                    if (0x2648 <= hs && hs <= 0x2653) { returnValue = YES; }
                                    if (0x30 <= hs && hs <= 0x39)     { returnValue = YES; }
                                    if (0x26f0 <= hs && hs <= 0x26fd) { returnValue = YES; }
                                    if ( hs == 0x203c || hs == 0x2049 || hs == 0x2122 || hs == 0x2139 || hs == 0x21a9 || hs == 0x21aa || hs == 0x23 || hs == 0x231a || hs == 0x231b || hs == 0x2328 || hs == 0x23cf || hs == 0x24c2 || hs == 0x25b6 || hs == 0x25c0 || hs == 0x260e || hs == 0x2611 || hs == 0x2614 || hs == 0x2615 || hs == 0x2618 || hs == 0x261d || hs == 0x2620 || hs == 0x2622 || hs == 0x2623 || hs == 0x2626 || hs == 0x262a || hs == 0x262e || hs == 0x262f || hs == 0x2638 || hs == 0x2639 || hs == 0x263a || hs == 0x2668 || hs == 0x267b || hs == 0x267f || hs == 0x2692 || hs == 0x2693 || hs == 0x2694 || hs == 0x2696 || hs == 0x2697 || hs == 0x2699 || hs == 0x269b || hs == 0x269c || hs == 0x26a0 || hs == 0x26a1 || hs == 0x26b0 || hs == 0x26b1 || hs == 0x26bd || hs == 0x26be || hs == 0x26c4 || hs == 0x26c5 || hs == 0x26c8 || hs == 0x26ce || hs == 0x26cf || hs == 0x26d1 || hs == 0x26d3 || hs == 0x26d4 || hs == 0x26e9 || hs == 0x26ea || hs == 0x2702 || hs == 0x2705 || hs == 0x2708 || hs == 0x2709 || hs == 0x270a || hs == 0x270b || hs == 0x270c || hs == 0x270d || hs == 0x270f || hs == 0x2712 || hs == 0x2714 || hs == 0x2716 || hs == 0x271d || hs == 0x2721 || hs == 0x2728 || hs == 0x2733 || hs == 0x2734 || hs == 0x2744 || hs == 0x2747 || hs == 0x274c || hs == 0x274e || hs == 0x2753 || hs == 0x2754 || hs == 0x2755 || hs == 0x2757 || hs == 0x2763 || hs == 0x2764 || hs == 0x2795 || hs == 0x2796 || hs == 0x2797 || hs == 0x27a1 || hs == 0x27b0 || hs == 0x27bf || hs == 0x2934 || hs == 0x2935 || hs == 0x2b05 || hs == 0x2b06 || hs == 0x2b07 || hs == 0x2b50 || hs == 0x2b55 || hs == 0x3030 || hs == 0x303d || hs == 0x3297 || hs == 0x3299 || hs == 0x2a || hs == 0xa9 || hs == 0xae || hs == 0xd83c || hs == 0xd83d) { returnValue = YES; }
                                }
                            }];
    return returnValue;
}