ios数字转emoj表情

+(NSString *)convertSimpleUnicodeStr:(NSString *)inputStr{

    int  unicodeIntValue= strtoul([inputStr UTF8String],,);

    UTF32Char inputChar = ; // unicodeIntValue ;

    inputChar = NSSwapHostIntToLittle(inputChar);

    NSString *sendStr = [[NSString alloc] initWithBytes:&inputChar length: encoding:NSUTF32LittleEndianStringEncoding];

    NSLog(@"%@",sendStr);

    return sendStr;
}