检查给定字符是否为Objective-C中的表情符号

NSString *character = @"😀"; // 给定字符
NSString *string = [NSString stringWithString:character];
NSRange range = [string rangeOfComposedCharacterSequenceAtIndex:0];
NSString *substring = [string substringWithRange:range];
NSData *data = [substring dataUsingEncoding:NSUTF8StringEncoding];
const char *bytes = [data bytes];

BOOL isEmoji = NO;
for (NSUInteger i = 0; i < [data length]; i++) {
    if ((bytes[i] & 0xF0) == 0xE0) { // 判断是否为表情符号的编码范围
        isEmoji = YES;
        break;
    }
}

if (isEmoji) {
    NSLog(@"给定字符是Objective-C中的表情符号");
} else {
    NSLog(@"给定字符不是Objective-C中的表情符号");
}