ios - View 内从一个 VC 到另一个 VC 的自定义转换

Question

我有这段代码，可以将 View (containerView)内的一个 VC 更改为另一个 VC。该代码有效，但如何设置两个 View 之间的转换？

var childVC: UIViewController?
@IBOutlet weak var containerView: UIView!

func ChangeViewController() { 
    childVC?.willMoveToParentViewController(nil)
    childVC?.view.removeFromSuperview()
    childVC?.removeFromParentViewController()
    childVC = storyboard?.instantiateViewControllerWithIdentifier("identifier") as? UIViewController
    if let childVC = childVC {
        addChildViewController(childVC)
        childVC.view.frame = containerView.bounds 
        containerView.addSubview(childVC.view)
        childVC.didMoveToParentViewController(self)
    }
}

我尝试过，但没有成功:

let oldView = childVC?.view
UIView.transitionFromView(oldView!, toView: childVC.view, duration: 2, options: UIViewAnimationOptions.TransitionFlipFromLeft, completion: { (succeed) -> Void in

        })

Answer 1

要在 VC 之间进行转换，您可以在 View 中显示每个 VC，并以动画方式将它们移入和移出容器 View 的 View 。大致如下:

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.0];
[UIView setAnimationDelegate:self.containerView];

// Your animations here

[UIView commitAnimations];