NSScreencast Episode #88 Interactive View Controller Transitions

Interactive View Controller Transitions - NSScreencast

スクリーンが上から垂れ下がるようなエフェクトの戻すパターン

• @interface InteractiveSwipe : UIPercentDrivenInteractiveTransition
  • @property (nonatomic, strong) UIPanGestureRecognizer *pan;
  • [self updateInteractiveTransition:percent];
  • [self cancelInteractiveTransition];
  • [self finishInteractiveTransition];
  • completionSpeed
    • return 1 - self.percentComplete;
• switch (pan.state) {
  • case UIGestureRecognizerState
    • Began
    • Changed
    • Ended
    • Cancelled
• wireUpInteraction
  • id animator = [self.transitioningDelegate animationControllerForDismissedController:self];
  • id interactor = [self.transitioningDelegate interactionControllerForDismissal:animator];
  • if ([interactor respondsToSelector:@selector(attachToViewController:)]) {
    • [interactor attachToViewController:self];
• SwatchTransition
  • animateTransition
  • hacky
    • [toVC viewWillAppear:YES];
    • [toVC viewDidAppear:YES];
  • if ([transitionContext transitionWasCancelled]) {
    • [transitionContext completeTransition:NO];
• switch case
  • break; 忘れない