Gesture 초기화와 재스쳐에 따른 뷰 애니메이션

viewDidload  에 

[self initGestureRecognizer];   initGestureRecognizer를 초기화 해준후 

특정 제스쳐에 반응 에니메이션을 걸어준다. 

- (void)initGestureRecognizer {

    UISwipeGestureRecognizer *swipeRecognizer;

    

    swipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeHandler:)];

    swipeRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;

    [self.view addGestureRecognizer:swipeRecognizer];

    [swipeRecognizer release];

    

    swipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeHandler:)];

    swipeRecognizer.direction = UISwipeGestureRecognizerDirectionRight;

    [self.view addGestureRecognizer:swipeRecognizer];

    [swipeRecognizer release];

    

    UITapGestureRecognizer *tapRecognizer;

    

    tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapHandler:)];

    [tapRecognizer setNumberOfTapsRequired:1];

    [self.view addGestureRecognizer:tapRecognizer];

    [tapRecognizer release];

}

- (void)swipeHandler:(UISwipeGestureRecognizer *)recognizer {

   NSString *obj;

    if(recognizer.direction == UISwipeGestureRecognizerDirectionLeft) {

      //  directionLabel.text = @"Down";

        imageIndex = (imageIndex > 0 )? imageIndex - 1: [imgName count]-1;

         obj = kCATransitionFromRight;

    }

    else if(recognizer.direction == UISwipeGestureRecognizerDirectionRight) {

        //directionLabel.text = @"Up";

        imageIndex = (imageIndex < [imgName count]-1 )?  imageIndex + 1 : 0 ;

         obj = kCATransitionFromLeft;

    }

    

    CATransition *transition = [CATransition animation];

    transition.duration = 0.5f;

    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];

    transition.type = kCATransitionPush;

    imageFrame.image = [UIImage imageNamed:[imgName objectAtIndex:imageIndex]];

    transition.subtype = obj;

    [imageFrame.layer addAnimation:transition forKey:nil];