iOS 表情替换成字符串

//系统表情替换

+ (NSString *)stringReplaceWithFace:(NSString *)str

{

    NSString *mutaStr = str;

    

    for (int i=0x1F600; i<=0x1F64F; i++) {

        if (i < 0x1F641 || i > 0x1F644) {

            int sym = EMOJI_CODE_TO_SYMBOL(i);

            NSString *emoT = [[NSString alloc] initWithBytes:&sym length:sizeof(sym) encoding:NSUTF8StringEncoding];

            

            mutaStr = [mutaStr stringByReplacingOccurrencesOfString:emoT withString:[NSString stringWithFormat:@"%d",sym]];

        }

    }

    

    return mutaStr;

}