标签: custom-transition

在示例中我似乎只能使用变换或正在修改帧.我错过了一些明显的事吗？目前其他动画(淡入淡出)都工作正常,但约束仍然锁定在位.

一个快速的代码片段:

[[customViewController view] layoutIfNeeded];
[UIView animateWithDuration:2 animations:^{

    [[customViewController constraintToAnimate] setConstant:1024];
    [[customViewController view] layoutIfNeeded];

} completion:^(BOOL finished) {
    [transitionContext completeTransition:YES];
}];

我有两个观点,我想做一个轻扫样式转换,我已经完成了当有一个segue行动,但我没有在这里,所以我不知道如何应用我的动画类.我班上的所有内容都是:

let stb = UIStoryboard(name: "Walkthrough", bundle: nil)
    let walkthrough = stb.instantiateViewControllerWithIdentifier("walk") as! BWWalkthroughViewController

self.presentViewController(walkthrough, animated: true, completion: nil)

我想申请申请以下自定义segue:

class CustomSegue: UIStoryboardSegue {

  override func perform() {
    // Assign the source and destination views to local variables.
    var firstVCView = self.sourceViewController.view as UIView!
    var secondVCView = self.destinationViewController.view as UIView!

    // Get the screen width and height.
    let screenWidth = UIScreen.mainScreen().bounds.size.width
    let screenHeight = UIScreen.mainScreen().bounds.size.height

    // Specify the initial position of the destination view.
    secondVCView.frame = CGRectMake(0.0, screenHeight, screenWidth, screenHeight) …

我的应用程序有两个视图控制器(VC A和B)以及它们之间的自定义转换.

当在VC A上使用左向平移手势时,交互式动画过渡在模式上呈现VC B从A向右滑动(从右到左).要关闭VC B,用户可以:

• 使用右向平移手势:将触发交互式转换,将VC B向右滑动并揭开VC A. VC B的位置由平移手势状态交互确定.交互由UIPercentDrivenInteractiveTransition对象"驱动" .
• 使用VC B导航栏上的"关闭"按钮.这将触发自定义过渡(向右滑动)而不进行交互(仅动画).

问题是在Xcode 10 Seed(build 10A254a)+ iOS 12 Simulator(X或XR或XS)上进行测试我可以很容易地进入自定义转换永远不会完成且UI处于奇怪状态的状态:

• UI卡在VC B上,没有手势或点击工作.
• 该应用程序没有卡住 - 我可以看到conosle日志仍在滚动,netwrok活动正在运行(日志中没有错误)
• 暂停应用程序处于这种卡住状态我可以看到com.apple.main-thread没有卡住.
• 当我点击"调试视图层次结构"时,会发生一些奇怪的事情:在SIM屏幕上,我仍然可以看到VC B并禁用所有UI.在视图调试器主视图上 - 我可以看到VC A的子视图被绘制,就像转换完成一样.在视图调试器左侧树视图 - 我可以看到VC B的视图层次结构.

此问题从未出现在任何先前版本的Xcode和/或iOS Xcode 10/iOS12之前.

这是animateTransition我的自定义方法UIViewControllerAnimatedTransitioning

func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {

    guard let fromVC = transitionContext.viewController(forKey: .from), let toVC = transitionContext.viewController(forKey: .to) else {
        transitionContext.completeTransition(false)
        return
    }

    let containterView = transitionContext.containerView
    containterView.insertSubview(toVC.view, …

我是iOS开发中的新手,最近在iOS 9中通过自定义过渡遇到了这个问题.

我有一个对象符合UIViewControllerTransitioningDelegate协议和实现animationControllerForDismissedController,如:

@implementation MyCustomizedTransitioningDelegate

#pragma mark - UIViewControllerTransitioningDelegate

- (id<UIViewControllerAnimatedTransitioning>)animationControllerForDismissedController:(UIViewController *)dismissed
{
    MyCustomizedTransitionAnimator *animator = [[MyCustomizedTransitionAnimator alloc] init];
    animator.presenting = NO;
    return animator;
}

@end

触发模态转换的过程如下:

@implementation MyViewController

#pragma mark - Initializers

+ (MyCustomizedTransitioningDelegate *)modalTransitioningDelegateSingletonInstance;
{
    static MyCustomizedTransitioningDelegate *delegateInst = nil;
    static dispatch_once_t onceToken = 0;
    dispatch_once(&onceToken, ^{
        delegateInst = [[MyCustomizedTransitioningDelegate alloc] init];
    });

    return delegateInst;
}

#pragma mark - UIViewController

- (void)dismissViewControllerAnimated:(BOOL)animated completion:(void (^)(void))completion;
{
    [self prepareForDismissViewControllerAnimated:animated completion:&completion];
    [super dismissViewControllerAnimated:animated completion:completion];
}

- (void)prepareForDismissViewControllerAnimated:(BOOL)animated …

我想在具有不同UINavigationBar背景颜色的视图之间实现流畅的动画。嵌入的视图具有相同的背景颜色UINavigationBar，我想模仿推/弹出过渡动画，如：

我准备了自定义过渡：

class CustomTransition: NSObject, UIViewControllerAnimatedTransitioning {

    private let duration: TimeInterval
    private let isPresenting: Bool

    init(duration: TimeInterval = 1.0, isPresenting: Bool) {
        self.duration = duration
        self.isPresenting = isPresenting
    }

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

    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
        let container = transitionContext.containerView
        guard
            let toVC = transitionContext.viewController(forKey: .to),
            let fromVC = transitionContext.viewController(forKey: .from),
            let toView = transitionContext.view(forKey: .to),
            let fromView = transitionContext.view(forKey: .from)
        else {
            return
        }

        let rightTranslation = …

我有一个View控制器,当点击表格单元格时,它具有自定义推送转换,并在点击后退栏按钮项目时执行标准弹出转换.问题是当我尝试从前一个控制器转到相同的视图控制器时,应用程序崩溃了.以下是UINavigationControllerDelegate我正在实现的功能:

- (id<UIViewControllerAnimatedTransitioning>)navigationController:(UINavigationController *)navigationController animationControllerForOperation:(UINavigationControllerOperation)operation fromViewController:(UIViewController *)fromVC toViewController:(UIViewController *)toVC
{
    return (operation == UINavigationControllerOperationPush ? animator : nil);
}

任何线索都表示赞赏!

提前致谢.