Question

我有一个嵌入在导航控制器中的ViewController。我想要向右滑动，然后将视图控制器从VC1更改为VC2，这要归功于我设法完成stackoverflow的人员。但是，现在我想在VC2上向左滑动回到VC1时，沿传统方式向左（向右推）。

这是我在VC1中的代码（向右轻扫以转到VC2）：

override func viewDidLoad() {
        super.viewDidLoad()

        //Swipe right gesture

        let gesture = UISwipeGestureRecognizer(target: self, action: #selector(SelectedTopicViewController.performChange))

        gesture.direction = .right
        self.view.addGestureRecognizer(gesture)

}

@objc func performChange() {
        self.performSegue(withIdentifier: "goTo", sender: nil)
    }

这是我在VC2中的代码（向左滑动即可返回VC1）：

override func viewDidLoad() {
        super.viewDidLoad()
        self.navigationController?.setNavigationBarHidden(true, animated: false)
        //swipe left gesture
        let gesture = UISwipeGestureRecognizer(target: self, action: #selector(SendMessageTopicViewController.performChange))

        gesture.direction = .left
        self.view.addGestureRecognizer(gesture)

        // Do any additional setup after loading the view.
    }

    @objc func performChange() {
        //self.navigationController?.popViewController(animated: true)
        //print("swipe detected")
        self.performSegue(withIdentifier: "goBackToRight", sender: nil)


    }

这也是我的自定义segue代码（用于左右滑动）：

import Foundation
import UIKit
import QuartzCore

class SegueFromLeft: UIStoryboardSegue {
    override func perform() {
        let src: UIViewController = self.source
        let dst: UIViewController = self.destination
        let transition: CATransition = CATransition()
        let timeFunc : CAMediaTimingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
        transition.duration = 0.25
        transition.timingFunction = timeFunc
        transition.type = kCATransitionPush
        transition.subtype = kCATransitionFromLeft
        src.navigationController!.view.layer.add(transition, forKey: kCATransition)
        src.navigationController!.pushViewController(dst, animated: false)
    }


}

class SegueFromRight: UIStoryboardSegue {
    override func perform() {
        let src = self.source
        let dst = self.destination

        src.view.superview?.insertSubview(dst.view, aboveSubview: src.view)
        dst.view.transform = CGAffineTransform(translationX: src.view.frame.size.width*2, y: 0) //Double the X-Axis
        UIView.animate(withDuration: 0.25, delay: 0.0, options: UIViewAnimationOptions.curveEaseInOut, animations: {
            dst.view.transform = CGAffineTransform(translationX: 0, y: 0)
        }) { (finished) in
            src.present(dst, animated: false, completion: nil)
        }
}
}

这是我的故事板，请注意，我有一个到VC2的序列，另一个有回到VC1的序列（都是使用不同类的自定义序列）。

即使用户在VC2上滑动时，即使我有print("swiped")，它也不会在控制台中打印出来，因此为什么我认为滑动还是有问题...

结论：在VC1上可以滑动但在VC2上选择是有效的，但是在VC2上滑动却根本不起作用...

不能通过.left滑动回到原来的ViewController吗？

0 个答案: