我有一个侧导航控制器并通过UIButton呈现它。当我通过[self presentviewcontroller: NC animated: YES completion: nil]
直接将这个NC作为根视图控制器时,某些原因导致NC的菜单面被UITransitionView
阻挡,我无法消失。
我尝试了以下内容:
UIWindow *window = [(AppDelegate *)[[UIApplication sharedApplication] delegate] window];
window.backgroundColor = kmain;
CATransition* transition = [CATransition animation];
transition.duration = .5;
transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
transition.type = kCATransitionPush;
transition.subtype = kCATransitionFromTop;
[nc.view.layer addAnimation:transition forKey:kCATransition];
[UIView transitionWithView:window
duration:0.5
options:UIViewAnimationOptionTransitionNone
animations:^{ window.rootViewController = nc; }
completion:^(BOOL finished) {
for (UIView *subview in window.subviews) {
if ([subview isKindOfClass:NSClassFromString(@"UITransitionView")]) {
[subview removeFromSuperview];
}
}
}];
但它非常hacky,并且随着窗口的rootviewcontroller在转换过程中发生变化,它有点不稳定,部分导航控制器和右上角变黑。看起来很糟糕。
答案 0 :(得分:6)
要通过UITransitionView
获取点按事件,请将containerView
' userInteractionEnabled
设置为false
。这是因为您使用UIViewControllerAnimatedTransitioning
进行自定义过渡动画。
示例,在animateTransition(_:)
:
func animateTransition(transitionContext: UIViewControllerContextTransitioning) {
let containerView = transitionContext.containerView()
containerView.userInteractionEnabled = false
...
}
答案 1 :(得分:1)
我有同样的问题,但在一个不同的场景中,我最终做了一些非常相似的事情来找到视图,但是我没有删除可能更有问题的视图,而是禁用了用户交互,因此任何触摸事件都会抛出它任何其他对象都可以处理用户的交互。 在我的情况下,这只是在将应用程序更新到iOS 10之后才出现,在iOS 9中运行的相同代码并不属于此。
答案 2 :(得分:1)
我遇到了同样的问题,这解决了我的问题,
navigationController.setNavigationBarHidden(true,animated:false)
这对我有用,因为我在视图控制器中将自定义视图作为导航栏。
答案 3 :(得分:0)
我在弹出视图控制器上设置accessibilityElements时遇到了这个问题。我通过删除分配元素数组来解决此问题。
答案 4 :(得分:0)
我有一个类似的问题,即UITransitionView不断阻止我的视图,从而阻止了任何用户交互。
在我的情况下,这是由于自定义动画UIViewController转换未完成。
我忘记使用以下方法正确完成转换:
TransitionContext.completeTransition(transitionContext.transitionWasCancelled)
或
TransitionContext.completeTransition(!transitionContext.transitionWasCancelled)
在
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {}
来自UIViewControllerAnimatedTransitioning
协议
答案 5 :(得分:0)
在我的情况下,我需要一个HalfSize视图控制器。我遵循了this answer which worked great,直到意识到仍然需要与正在呈现的vc(halfSizeVC后面的vc)进行交互。
关键是必须将这两个框架都设置为相同的CGRect值:
halfSizeVC.frame = CGRect(x: 0, y: UIScreen.main.bounds.height / 2, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height)
containerView = CGRect(x: 0, y: UIScreen.main.bounds.height / 2, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height)
这是从 ViewController 到 HalfSizeController 的代码,并使 HalfSizeController 1/2成为屏幕尺寸。即使屏幕上显示halfSizeVC
,您仍然可以与它后面的vc的上半部分进行交互。
如果您想触摸HalfSizeVC内部的某些内容,则还必须制作一个PassthroughView
类。我将其包含在底部。
正在显示的vc是白色的,底部带有紫色按钮。点击紫色按钮将弹出红色halfSizeVC。
vc / presentingVC:
import UIKit
class ViewController: UIViewController {
lazy var purpleButton: UIButton = {
let button = UIButton(type: .system)
button.translatesAutoresizingMaskIntoConstraints = false
button.setTitle("Tap to Present HalfSizeVC", for: .normal)
button.setTitleColor(UIColor.white, for: .normal)
button.backgroundColor = UIColor.systemPurple
button.addTarget(self, action: #selector(purpleButtonPressed), for: .touchUpInside)
button.layer.cornerRadius = 7
button.layer.masksToBounds = true
return button
}()
var halfSizeVC: HalfSizeController?
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .white
// tap gesture on vc will dismiss HalfSizeVC
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(dismissHalfSizeVC))
view.addGestureRecognizer(tapGesture)
}
// tapping the purple button presents HalfSizeVC
@objc func purpleButtonPressed() {
halfSizeVC = HalfSizeController()
// *** IMPORTANT ***
halfSizeVC!.view.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height / 2)
halfSizeVC!.modalPresentationStyle = .custom
present(halfSizeVC!, animated: true, completion: nil)
}
// dismiss HalfSizeVC by tapping anywhere on the white background
@objc func dismissHalfSizeVC() {
halfSizeVC?.dismissVC()
}
}
halfSizeVC / presentedVC
import UIKit
class HalfSizeController: UIViewController {
init() {
super.init(nibName: nil, bundle: nil)
modalPresentationStyle = .custom
transitioningDelegate = self
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
lazy var topHalfDummyView: PassthroughView = {
let view = PassthroughView()
view.translatesAutoresizingMaskIntoConstraints = false
view.backgroundColor = .clear
view.isUserInteractionEnabled = true
return view
}()
var isPresenting = false
let halfScreenHeight = UIScreen.main.bounds.height / 2
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .red
setAnchors()
}
private func setAnchors() {
view.addSubview(topHalfDummyView)
topHalfDummyView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
topHalfDummyView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
topHalfDummyView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
topHalfDummyView.heightAnchor.constraint(equalToConstant: halfScreenHeight).isActive = true
}
public func dismissVC() {
dismiss(animated: true, completion: nil)
}
}
extension HalfSizeController: UIViewControllerTransitioningDelegate, UIViewControllerAnimatedTransitioning {
func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return self
}
func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return self
}
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return 1
}
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
let containerView = transitionContext.containerView
// *** IMPORTANT ***
containerView.frame = CGRect(x: 0, y: halfScreenHeight, width: UIScreen.main.bounds.width, height: halfScreenHeight)
let toViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to)
guard let toVC = toViewController else { return }
isPresenting = !isPresenting
if isPresenting == true {
containerView.addSubview(toVC.view)
topHalfDummyView.frame.origin.y += halfScreenHeight
UIView.animate(withDuration: 0.4, delay: 0, options: [.curveEaseOut], animations: {
self.topHalfDummyView.frame.origin.y -= self.halfScreenHeight
}, completion: { (finished) in
transitionContext.completeTransition(true)
})
} else {
UIView.animate(withDuration: 0.4, delay: 0, options: [.curveEaseOut], animations: {
}, completion: { (finished) in
self.topHalfDummyView.frame.origin.y += self.halfScreenHeight
transitionContext.completeTransition(true)
})
}
}
}
HalfSizeVC中的topHalfDummyView需要PassthroughView
import UIKit
class PassthroughView: UIView {
override func point(inside point: CGPoint, with event: UIEvent?) -> Bool {
print("Passing all touches to the next view (if any), in the view stack.")
return false
}
}
在按下紫色按钮之前:
按下紫色按钮后:
如果您按下白色背景,则红色将消失
您只需c + p所有3个文件并运行您的项目