//
    // backward compatibility of handling URL
    //
    NSString* osVersion = [[UIDevice currentDevice] systemVersion];
    if ([osVersion compare:@"3.9" options:NSNumericSearch] == NSOrderedAscending) {
        NSURL *url = [launchOptions objectForKey:UIApplicationLaunchOptionsURLKey];
        if (url) {
            [self performSelector:@selector(handleURL:) withObject:url afterDelay:.1];
        }
    }