ios emoji demo code

    for (int i=0x1F300; i<0x1F5FF; i++) {
        UniChar c[2];
        
        CFStringGetSurrogatePairForLongCharacter(i, c);
        
        NSString *s = [NSString stringWithCharacters:c length:2];
        
        NSLog(@"%@",s);
    }

ios 5+