Apple讨论了如何在此document中的两个子视图控制器之间进行容器视图控制器转换。我想设置一个简单的垂直向上滑动动画,与UIModalTransitionStyleCoverVertical
中的UIModalTransitionStyle
相同。但是,transitionFromViewController
仅允许使用UIViewAnimationOptions
,而不允许使用过渡样式。那么如何动画播放视图呢?
奇怪的是,要在子视图控制器之间进行切换,您无法调用UINavigationController
中类似的简单推送方法来为转换设置动画。
答案 0 :(得分:4)
加载子视图,在底部屏幕下使用origin.y设置框架。在动画块中将其更改为0后。例如:
enum Animation {
case LeftToRight
case RightToLeft
}
func animationForLoad(fromvc: UIViewController, tovc: UIViewController, with animation: Animation) {
self.addChildViewController(tovc)
self.container.addSubview(tovc.view)
self.currentVC = tovc
var endOriginx: CGFloat = 0
if animation == Animation.LeftToRight {
tovc.view.frame.origin.x = -self.view.bounds.width
endOriginx += fromvc.view.frame.width
} else {
tovc.view.frame.origin.x = self.view.bounds.width
endOriginx -= fromvc.view.frame.width
}
self.transition(from: fromvc, to: tovc, duration: 0.35, options: UIViewAnimationOptions.beginFromCurrentState, animations: {
tovc.view.frame = fromvc.view.frame
fromvc.view.frame.origin.x = endOriginx
}, completion: { (finish) in
tovc.didMove(toParentViewController: self)
fromvc.view.removeFromSuperview()
fromvc.removeFromParentViewController()
})
}
上面的代码是2个子视图之间的过渡和弹出水平动画。