Swift 中类似控制中心的滑动视图实现
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【中文标题】Swift 中类似控制中心的滑动视图实现【英文标题】:Control Center-like sliding view implementation in Swift 【发布时间】:2016-10-05 13:28:24 【问题描述】:我正在尝试在 App 上创建交互式滑动过渡。
目标是当视图控制器从底部拖动时呈现一个 uiview(而不是从底部边缘,因此它不会与控制中心冲突)并将部分覆盖主视图控制器(就像 ios控制中心)。过渡应该是交互式的,即根据用户的拖动。
很高兴听到有关可用 API 的想法。
【问题讨论】:
我之前做过这个,我没有密码,但是如果你仍然没有答案,我可以在我回家时将它发送给你。 感谢@JacobKing 的快速回复,我正在等待您的答复。 @JacobKing 能否分享一下代码 @user6520705 我不再为该公司工作,所以我无法访问他们的源代码控制存储库......我可能有一个旧的本地副本,但我怀疑它,会看看什么时候我有机会。 【参考方案1】:以下代码将执行在 Xcode 8 中测试并工作的简单 slideView 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)
让我知道代码对你有用...
【讨论】:
【参考方案2】:对不起,如果这个问题有点老了。 您可以继承 UIView 并覆盖 touchesBegan(_ , with) 以保存原始触摸位置
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?)
guard let touch = touches.first else print("No touch"); return
startPoint = touch.location(in: self)
startHeight = heightConstraint.constant
slideDirection = .none
super.touchesBegan(touches, with: event)
和 touchesMoved(_,with) 在手指滑动视图时更新高度约束。
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?)
guard let touch = touches.first else print("touchesMovedno touches"); return
let endPoint = touch.location(in: self)
let diff = endPoint.y - startPoint.y
// This causes the view to move along the drag
switch anchorLocation
case .top :
heightConstraint.constant = startHeight + diff
case .bottom :
heightConstraint.constant = startHeight - diff
self.layoutIfNeeded()
// Update direction
if diff == 0.0
self.slideDirection = .none
else
self.slideDirection = (diff > 0) ? .down : .up
super.touchesMoved(touches, with: event)
如果您愿意,可以覆盖 touchesEnded(_, with) 以添加动画
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?)
self.modifyHeightConstraints()
self.animateViewTransition(duration: animDuration, delay: animDelay, clearance: animClearance, springDampingRatio: animSpringDampingRatio, initialSpringVelocity: animInitialSpringVelocity, complete:
self.slideDirection = .none
)
super.touchesEnded(touches, with: event)
我创建了一个组件,它可能具有您想要的确切功能。该组件包括可调整的动画弹跳。您可以在情节提要中的视图上布局和设计子视图。
查看 GitHub 中的链接
https://github.com/narumolp/NMPAnchorOverlayView
【讨论】:
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