如何将手势识别器添加到 ViewController 及其子项？

Question

我正在制作类似于 Euro Sport 的应用程序。我的 rootviewController 是 pageViewController，它有 3 VCs。左右滑动可以更改 VC。接下来，我添加了侧边栏菜单。我想将手势识别器添加到整个 rootViewController。这就是我添加手势的方式：

 self.exitPanGesture = UIPanGestureRecognizer()
        self.exitPanGesture.addTarget(self, action:"handleOffstagePan:")
        self.sourceViewController.view.addGestureRecognizer(self.exitPanGesture)
        self.sourceViewController.navigationController?.view.addGestureRecognizer(self.exitPanGesture)

当我拖动 rootviewController 点击导航栏时，它起作用了。但是其他部分如segmentcontrol, pageContent 不工作

我在这里设置 sourceViewController:

 func resetToMainPage(index: Int!) {
    /* Getting the page View controller */
    mainPageViewController = self.storyboard?.instantiateViewControllerWithIdentifier("MainPageViewController") as UIPageViewController
    self.mainPageViewController.dataSource = self
    self.mainPageViewController.delegate = self

    pageContentViewController = self.viewControllerAtIndex(index)

   // self.transtionManger.sourceViewController = pageContentViewController // adding swipe to the pageContentViewControlle in order to close menu
    self.transtionManger.sourceViewController = mainPageViewController
    self.mainPageViewController.setViewControllers([pageContentViewController!], direction: UIPageViewControllerNavigationDirection.Forward, animated: true, completion: nil)


    self.mainPageViewController.view.frame = CGRectMake(0, 102, self.view.frame.width, self.view.frame.height)
    self.addChildViewController(mainPageViewController)
    self.view.addSubview(mainPageViewController.view)
    self.mainPageViewController.didMoveToParentViewController(self)

}

所以，我的问题是如何将手势识别器添加到整个 rootViewController，包括 navbar、segmentcontrol、pageviewcontrol？

Answer 1

手势识别器只能附加到一个视图。所以下面的行意味着只有 navigationController?.view 正在添加手势。

self.sourceViewController.view.addGestureRecognizer(self.exitPanGesture)
self.sourceViewController.navigationController?.view.addGestureRecognizer(self.exitPanGesture)

您可以为每个要使用的视图复制手势识别器，然后以这种方式添加它们。

self.exitPanGesture1 = UIPanGestureRecognizer()
self.exitPanGesture1.addTarget(self, action:"handleOffstagePan:")
self.sourceViewController.view.addGestureRecognizer(self.exitPanGesture1)

self.exitPanGesture2 = UIPanGestureRecognizer()
self.exitPanGesture2.addTarget(self, action:"handleOffstagePan:")
self.sourceViewController.navigationController?.view.addGestureRecognizer(self.exitPanGesture2)

Answer 2

伙计们，我解决了我的问题，但我遇到了另一个问题。在我的例子中，我创建了 exitGestureRecognizer。我想将其添加到整个 viewcontroller 视图中。所以，这是我的代码：

 for singleView in self.sourceViewController.view.subviews {
                singleView.addGestureRecognizer(exitPanGesture)
                singleView.navigationController??.view.addGestureRecognizer(exitPanGesture)
            }

出于某种原因，navBar.view 上的识别器不起作用。如果我这样写代码：

for singleView in self.sourceViewController.view.subviews {
            singleView.addGestureRecognizer(exitPanGesture)
            singleView.navigationController??.view.addGestureRecognizer(exitPanGesture)
        }
self.sourceViewController.navigationController?.view.addGestureRecognizer(self.exitPanGesture)

只有导航栏手势有效，子视图手势无效。如果我更改此代码的顺序。导航栏手势不起作用，但子视图手势有效。如何向两个视图添加手势？

如何将手势识别器添加到 ViewController 及其子项？

how to add gesture recognizer to ViewController and to its Children?

ios

swift

uigesturerecognizer

gesture