swift - Swift 中类似控制中心的滑动 View 实现

Question

我正在尝试在应用程序上创建交互式滑动过渡。

目标是当 View Controller 从底部拖动(而不是从底部边缘拖动，因此不会与控制中心冲突)时呈现一个 uiview，并将部分覆盖主视图 Controller (就像 iOS 一样)控制中心)。转换应该是交互式的，即根据用户的拖动。

很高兴听到有关可用 API 的想法。

Answer 1

以下代码将执行在 Xcode 8 中测试并有效的简单幻灯片 View 动画代码。

 import UIKit

class ViewController: UIViewController,UIGestureRecognizerDelegate {

// I am using VisualView as a slideView
@IBOutlet weak var slideView: UIVisualEffectView!

//Button to open slideView
@IBOutlet weak var button: UIBarButtonItem!

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    // setting background for sideView
       slideView.backgroundColor = UIColor(patternImage: UIImage(named: "original.jpg")!)

    //Initial hide so it won't show.when the mainView loads...
      slideView.isHidden = true

    // DownSwipe to hide slideView
       let downSwipe = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.handleSwipes(_:)))
       downSwipe.direction = .down
       view.addGestureRecognizer(downSwipe)
    }

   // set UIButton to open slideVie...(I am using UIBarButton)
     @IBAction func sdrawButton(_ sender: AnyObject) {

      self.slideView.isHidden = false
      slideView.center.y += view.frame.height

      UIView.animate(withDuration: 0.7, delay: 0, options: UIViewAnimationOptions.curveEaseIn, animations:{
        self.slideView.center.y -= self.view.frame.height
        self.button.isEnabled = false
        }, completion: nil)  
}

   func handleSwipes(_ sender:UISwipeGestureRecognizer) {
    if (sender.direction == .down) {
        print("Swipe Down")

        self.slideView.isHidden = true

        self.slideView.center.y -= self.view.frame.height
        UIView.animate(withDuration: 0.7, delay: 0, options: UIViewAnimationOptions.curveEaseOut, animations:{
            self.slideView.center.y += self.view.frame.height
            self.button.isEnabled = true
            }, completion: nil)
  }  
  }
  }

让我知道该代码适合您...