自定义视图控制器转换 xcode8

Question

我正在尝试在此 tutorial 之后进行自定义视图转换。这是我的代码

class ItemsTableViewController: UITableViewController, UIViewControllerTransitioningDelegate {

let customPresentAnimationController = CustomPresentAnimationController()

// viewDidLoad and TableView methods

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "showAction" {
        let toViewController = segue.destination as UIViewController
        toViewController.transitioningDelegate = self
        toViewController.modalPresentationStyle = .custom
    }
}

func animationControllerForPresentedController(presented: UIViewController, presentingController presenting: UIViewController, sourceController source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
    return customPresentAnimationController
}

}

以及 CustomPresentAnimationController

class CustomPresentAnimationController: NSObject, UIViewControllerAnimatedTransitioning {

func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
    return 5
}

func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {

    let fromViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.from)!
    let toViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to)!
    let finalFrameForVC = transitionContext.finalFrame(for: toViewController)
    let containerView = transitionContext.containerView
    let bounds = UIScreen.main.bounds
    toViewController.view.frame = finalFrameForVC.offsetBy(dx: 0, dy: bounds.size.height)
    containerView.addSubview(toViewController.view)

    UIView.animate(withDuration: transitionDuration(using: transitionContext), delay: 0.0, usingSpringWithDamping: 0.5, initialSpringVelocity: 0.0, options: .curveLinear, animations: {
        fromViewController.view.alpha = 0.5
        toViewController.view.frame = finalFrameForVC
        }, completion: {
            finished in
            transitionContext.completeTransition(true)
            fromViewController.view.alpha = 1.0
    })
}

}

但是自定义转换不起作用。问题是没有调用 animationControllerForPresentedController 方法。我该如何解决这个问题？

Answer 1

中swift3方法

func animationControllerForPresentedController(presented: UIViewController, presentingController presenting: UIViewController, sourceController source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return customPresentAnimationController
}

已替换为

func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
    return customPresentAnimationController
}

自定义视图控制器转换 xcode8

Custom View Controller Transitions xcode8

xcode

uiviewcontroller

uiviewanimationtransition

ios

swift