iOS过渡动画

Question

我想创建一个透明的模态弹出式动画，除了当我旋转视图时，我得到了工作，它保持相同的大小。有人能指出我正确的方向吗？以下是我目前正在使用的动画代码

- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext { 
    UIView *inView = [transitionContext containerView]; 
    UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey]; 
    UIViewController *fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey]; 

    [inView addSubview:toVC.view]; 

    CGRect screenRect = fromVC.view.bounds; 
    [toVC.view setFrame:CGRectMake(0, screenRect.size.height, fromVC.view.frame.size.width, fromVC.view.frame.size.height)]; 

    [UIView animateWithDuration:0.25f 
     animations:^{ 

      [toVC.view setFrame:CGRectMake(0, 0, fromVC.view.frame.size.width, fromVC.view.frame.size.height)]; 
     } 
     completion:^(BOOL finished) { 
      [transitionContext completeTransition:YES]; 
     }]; 
} 

Answer 1

我刚刚尝试了自动布局组合的代码，并且视图为我调整了大小。只是为了确定，这是你想要实现的目标吗？

编辑 这里是我跟着来实现这个

1. 一个SEGUE添加到视图控制器在故事板
2. 创建过渡类的步骤（比如MyTransitionClass ）。
3. 添加UIViewControllerTransitioningDelegate父视图控制器

4. 实现父视图控制器animationControllerForPresentedController方法，像这样

   -(id<UIViewControllerAnimatedTransitioning>)animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController:(UIViewController *)source{ 
   return [[MyTransitionClass alloc] init]; 
   }