UISwipeGestureRecognizer swipe multiple views in iphone sdk

- (void)viewDidLoad
{
    [super viewDidLoad];
    appDel = (AppDelegate*)[[UIApplication sharedApplication]delegate];
    appDel.IsCenter = TRUE;
    firstView = [[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil];
    secondView = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];
   
   
    UISwipeGestureRecognizer *leftSwipe  =  [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(leftSwipe:)];
    [leftSwipe setDirection:(UISwipeGestureRecognizerDirectionUp)];
    leftSwipe.delegate  =   self;
    [self.view addGestureRecognizer:leftSwipe];
    [leftSwipe release];
   
    UISwipeGestureRecognizer *rightSwipe  =  [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(rightSwipe:)];
    [rightSwipe setDirection:(UISwipeGestureRecognizerDirectionDown)];
    rightSwipe.delegate   =   self;
    [self.view addGestureRecognizer:rightSwipe];
    [rightSwipe release];


    // Do any additional setup after loading the view, typically from a nib.
}
- (void)leftSwipe:(UISwipeGestureRecognizer *)recognizer
{
           if (appDel.IsCenter == TRUE) {
               CATransition *transition = [CATransition animation];
               transition.duration = 0.75;
               transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
               transition.type = kCATransitionPush;
               transition.subtype =kCATransitionFromTop;
               transition.delegate = self;
               [self.view.layer addAnimation:transition forKey:nil];
             [self.view addSubview:firstView.view];
            appDel.IsCenter = FALSE;
        }
        else {
            [secondView.view removeFromSuperview];
            appDel.IsCenter = TRUE;
        }
  
}
- (void)rightSwipe:(UISwipeGestureRecognizer *)recognizer
{
        if (appDel.IsCenter == TRUE) {
            CATransition *transition = [CATransition animation];
            transition.duration = 0.75;
            transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
            transition.type = kCATransitionPush;
            transition.subtype =kCATransitionFromBottom;
            transition.delegate = self;
           
            [self.view.layer addAnimation:transition forKey:nil];
           
             [self.view addSubview:secondView.view];
            appDel.IsCenter = FALSE;
        }
        else {
            [firstView.view removeFromSuperview];
            appDel.IsCenter = TRUE;
      
    }
}
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