有没有办法改变模态视图控制器外观的动画样式？ [英] Is there a way to change the animation style of a modal view controller appearance?

问题描述

我使用了以下两行代码：

  self.modalTransitionStyle = UIModalTransitionStyleCoverVertical; 
 [self presentModalViewController：viewcontroller animated：YES]; 
  

使视图控制器的视图从屏幕底部动画，效果很好。 p>

我的问题是：我可以改变这个动画的风格，使视图不总是从屏幕的底部滑动吗？例如

解决方案

modalTransitionStyle 视图控制器上的属性设置视图控制器将如何显示，而不是它将用于呈现不同控制器的动画。所以你可以这样做：

  viewcontroller.modalTransitionStyle = UIModalTransitionStyleCoverVertical; 
 [self presentModalViewController：viewcontroller animated：YES]; 
  

（我习惯于让视图控制器指定自己的模式过渡样式initWithCoder :,但这是一个样式问题，我猜）。

可用的转换风格列表是在此处。所以，尝试动画，一个控制器翻转像一张扑克牌，好像另一个打印在对面：

  viewcontroller.modalTransitionStyle = UIModalTransitionStyleFlipHorizo​​ntal; 
 [self presentModalViewController：viewcontroller animated：YES]; 
  

I am trying to animate the appearance and disappearance of two view controllers' view.

I used the following two lines of code:

self.modalTransitionStyle=UIModalTransitionStyleCoverVertical;
[self presentModalViewController:viewcontroller animated:YES]; 

to make the view controller's view animate in from the bottom of the screen, which works well.

My question is: can I change the style of this animation so that the view isn't always sliding in from the bottom of the screen? How can I make it animate in from the top of the screen, for example?

解决方案

The modalTransitionStyle property on a view controller sets how that view controller will appear, not the animation that it will use to present a different controller. So you'd do something like:

viewcontroller.modalTransitionStyle=UIModalTransitionStyleCoverVertical; 
[self presentModalViewController:viewcontroller animated:YES];

(and I'm in the habit of having view controllers dictate their own modal transition style in an overridden initWithCoder:, but that's a style question I guess).

The list of available transition styles is here. So, to try the animation where one controller flips over like a playing card, as if the other were printed on the opposite side:

viewcontroller.modalTransitionStyle=UIModalTransitionStyleFlipHorizontal; 
[self presentModalViewController:viewcontroller animated:YES];

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