iOS ViewController间切换的转场动画

• 适用于ViewController通过UINavigation的Push和Pop切换时的转场动画。

• 适用于ViewController通过Present和Dismiss切换时的转场动画。

(以ViewControllerA切换到ViewControllerB为例)

在ViewControllerA中导入头文件：UIViewController+XLBubbleTransition.h
添加如下代码，设置push和pop设置动画，并设置锚点。

self.xl_pushTranstion = [XLBubbleTransition transitionWithAnchorRect:button.frame];
self.xl_popTranstion = [XLBubbleTransition transitionWithAnchorRect:button.frame];

首先在ViewControllerB中导入头文件：UIViewController+XLBubbleTransition.h
添加如下代码，设置Present和Dismiss设置动画，并设置锚点。

self.xl_presentTranstion = [XLBubbleTransition transitionWithAnchorRect:button.frame];
self.xl_dismissTranstion = [XLBubbleTransition transitionWithAnchorRect:button.frame];