dismissViewControllerAnimated導致EXC_BAD_ACCESS-swift

Question

我試圖用dismissViewControllerAnimated（true，完成：{}）來關閉UIViewController，但是嘗試執行時會得到EXC_BAD_ACCESS。 （也就是說，工作的十分之一）。

我使用了一個自定義的transitionDelegate，並且當我未設置它時，它就可以工作了。

ListTransitionDelegate返回動畫器和presentationController。

PresentationController看起來像這樣

    init(presentingViewController: UIViewController!, presentedViewController: UIViewController!, controllerStyle: SideControllerStyle, shortest: CGFloat) {
    self.controllerStyle = controllerStyle
    self.shortest = shortest

    super.init(presentingViewController: presentingViewController, presentedViewController: presentedViewController)

    self.dimmingView.backgroundColor = UIColor.blackColor()

    var tapGesture = UITapGestureRecognizer(target: self, action: Selector("closePresented"))
    dimmingView.addGestureRecognizer(tapGesture)
}

override func adaptivePresentationStyle() -> UIModalPresentationStyle
{
    return UIModalPresentationStyle.OverFullScreen
}

override func shouldPresentInFullscreen() -> Bool
{
    return true
}

override func presentationTransitionWillBegin() {
    var containerView = self.containerView
    self.dimmingView.frame = self.containerView.bounds
    containerView.insertSubview(self.dimmingView, atIndex:0)

    presentedViewController.transitionCoordinator().animateAlongsideTransition({context in
        self.dimmingView.alpha = 0.5
        }, completion:nil)
}

override func presentationTransitionDidEnd(completed: Bool)
{
    if !completed {
        self.dimmingView.removeFromSuperview()
    }
}

override func dismissalTransitionDidEnd(completed: Bool)
{
    self.dimmingView.removeFromSuperview()
}

override func dismissalTransitionWillBegin() {
    presentedViewController.transitionCoordinator().animateAlongsideTransition({context in
        self.dimmingView.alpha = 0
        }, completion: nil)
}

func closePresented() {
    var presenting = self.presentingViewController

   presentedViewController.dismissViewControllerAnimated(true, completion: nil)
}

override func sizeForChildContentContainer(container: UIContentContainer!, withParentContainerSize parentSize: CGSize) -> CGSize {
    var size : CGSize

    switch self.controllerStyle {
    case .Left, .Right:
        size = CGSizeMake(self.shortest, parentSize.height)

    case .Bottom, .Top:
        size = CGSizeMake(parentSize.width, self.shortest)

    default:
        size = CGSizeMake(parentSize.width, parentSize.height)
    }

    return size
}

override func frameOfPresentedViewInContainerView() -> CGRect {
    var frame : CGRect
    var size = sizeForChildContentContainer(nil, withParentContainerSize: containerView.bounds.size)

    switch self.controllerStyle {
    case .Left:
        frame = CGRectMake(containerView.bounds.size.width - size.width, 0, size.width, size.height)

    case .Right:
        frame = CGRectMake(0, 0, size.width, size.height)

    case .Bottom:
        frame = CGRectMake(0, containerView.bounds.size.height - size.height, size.width, size.height)

    case .Top:
        frame = CGRectMake(0, 0, size.width, size.height)

    default:
        frame = CGRectMake(0, 0, size.width, size.height)
    }
    return frame
}

Answer 1

嘗試在方案設置中啟用僵屍對象。 （請記住在完成操作后將其關閉，因為該更改不會顯示在源代碼控制中，並且您確實不想在沒有ARC的情況下發布應用程序！）

如果收到錯誤消息

-[_UILayoutGuide superview]: message sent to deallocated instance 0x1781ac6a0

然后只需將此代碼添加到被關閉的視圖控制器中即可：

deinit {
    self.view.removeFromSuperview()
}

UILayoutGuide是一個私有的自動布局類。 我相信這是一個錯誤（並以此形式提交），因為為什么被解雇的視圖控制器需要自動布局？ 從其父視圖中移除類將搶先阻止在自動布局約束被釋放后訪問它們。

Answer 2

斯威夫特1.1

嘗試使用完成參數代替nil use {} 。 例如： presentedViewController.dismissViewControllerAnimated(true, completion: {})

Answer 3

在關閉viewController之前，應將TransitioningDelegate設置為nil。

Answer 4

我有同樣的問題。 我必須聲明類變量

class firstVC : UIViewController
{
    let customTransitioninDelegate = customTransitioninDelegate().
...

    //Then when created second view controller just assign it
    -func xxx()
    { 
        var secondVC = secondVC();
        secondVC.transitioningDelegate = customTransitioninDelegate;
        self.presentViewController(secondVC, animated: true, completion: nil); 
    }
}
class secondVC: UIViewController
{
...
    func xxx()
    {
        if(self.presentingViewController != nil)
        {
            self.presentingViewController!.dismissViewControllerAnimated(true, completion: nil);
        }
    }
}

並且解雇有效。