This is animation is imitate iOS7 task switcher animation, if you have more than 4 cards,it will reues card,and it can delete card
1.add card scroll view
self.cardScrollView = [[CardScrollView alloc] initWithFrame:self.view.frame];
self.cardScrollView.cardDelegate = self;
self.cardScrollView.cardDataSource = self;
[self.view addSubview:self.cardScrollView];2.update card when scrolling
- (void)updateCard:(UIView *)card withProgress:(CGFloat)progress direction:(CardMoveDirection)direction;3.set cards number
- (NSInteger)numberOfCards;4.reuse card
- (UIView *)cardReuseView:(UIView *)reuseView atIndex:(NSInteger)index;5.delete card,this is optional
- (void)deleteCardWithIndex:(NSInteger)index;