ios - SWRevealViewController 滑动手势不起作用

Question

您好，我已经在 swift 中集成了 swrevealview Controller 。

我在应用程序委托(delegate)中编写了以下代码。

let frontView = ViewController(nibName: "ViewController", bundle: nil)
    let rearView = LeftViewController(nibName : "LeftViewController", bundle :nil)

    var frontNavigationController = UINavigationController(rootViewController: frontView)
    var rearNavigationController = UINavigationController(rootViewController: rearView)

    menuSlider = SWRevealViewController(rearViewController: rearNavigationController, frontViewController: frontNavigationController)
    menuSlider?.delegate = self

    let rightView = LeftViewController(nibName : "RightViewController", bundle :nil)

    menuSlider?.rightViewController = rightView

    self.window?.rootViewController = menuSlider
    self.window?.backgroundColor = UIColor.whiteColor()
    self.window?.makeKeyAndVisible()

我写的正面图

 var revealController:SWRevealViewController  = self.revealViewController()
    self.view.addGestureRecognizer(revealViewController().panGestureRecognizer())
    self.view.addGestureRecognizer(revealViewController().tapGestureRecognizer())

如演示所示。我看过很多建议在 View 上添加手势的帖子。

我不确定我做错了什么。请帮助我解决问题。

谢谢

Answer 1

我能想到的一件事是，当涉及到您的代码时，您没有在任何地方存储对前后 View Controller 的强引用。它基本上会在执行离开方法体后立即被释放。在您的情况下，这样的事情可以解决问题:

Class myClass { 

    // Declaration
    var frontNC : UINavigationController!
    var rearNC : UINavigationController!

    ...
    func myFunction() {

       // Usage
       self.frontNC = UINavigationController(rootViewController: frontView)
       self.readNC = UINavigationController(rootViewController: rearView)

       // Note* there is no need to store ViewControllers because those
       // are retained by UINavigationController by default. The only
       // exception is if you want to do something with them later obviously :)
    }
}

虽然它会渲染，但它会产生一整套问题，而根据我的经验，手势识别器是最难跟踪的。

您可以阅读有关 ARC 工作原理的更多详细信息 in the Apple Documentation ，我认为没有人能比那里写的更好地解释它了:)