ios 使用 Swift 从底部向上推视图控制器

Push Up View Controller from Bottom using Swift

提问by Daniel Bramhall

I would like to push a view controller using Swift and animate it so it appears from the bottom and moves up. I have the following code to push my view controller:

我想使用 Swift 推送一个视图控制器并为其设置动画，使其从底部出现并向上移动。我有以下代码来推送我的视图控制器：

let helloTableViewController = self.storyboard!.instantiateViewControllerWithIdentifier("helloTableViewController") as! HelloTableViewController
self.navigationController!.pushViewController(helloTableViewController, animated: true)

I have found the following from another questionbut cannot seem to get it to work in Swift:

我从另一个问题中找到了以下内容，但似乎无法在 Swift 中使用它：

CATransition *animation = [CATransition animation]; 
[animation setDuration:2]; 
[animation setType:kCATransitionPush]; 
[animation setSubtype:kCATransitionFromTop]; 
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]]; 
SecondView *sObj=[[SecondView alloc] initWithNibName:@"SecondView" bundle:nil];
[self.navigationController pushViewController:sObj animated:YES];
[[sObj.view layer] addAnimation:animation forKey:@"SwitchToView1"];

回答by Besat

Swift3:

斯威夫特3：

for push :

推：

    // push view controller but animate modally
    let storyBoard: UIStoryboard = UIStoryboard(name: "myStoryBoard", bundle: nil)
    let vc = storyBoard.instantiateViewController(withIdentifier: "myViewControllerIdentifier") as! MyViewController

    let navigationController = self.navigationController


    vc.navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Close", style: .plain, target: vc, action: #selector(vc.closeView))
    vc.navigationItem.leftBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: vc, action: nil)

    let transition = CATransition()
    transition.duration = 0.5
    transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
    transition.type = kCATransitionMoveIn
    transition.subtype = kCATransitionFromTop
    navigationController?.view.layer.add(transition, forKey: nil)
    navigationController?.pushViewController(vc, animated: false)

and in vc for pop:

在 vc 中流行：

func closeView() {
    let transition = CATransition()
    transition.duration = 0.5
    transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
    transition.type = kCATransitionReveal
    transition.subtype = kCATransitionFromBottom
    navigationController?.view.layer.add(transition, forKey: nil)
    _ = navigationController?.popViewController(animated: false)
}

回答by Nex Mishra

Here is the code for pushing

这是推送的代码

let transition:CATransition = CATransition()
transition.duration = 0.5
transition.timingFunction = CAMediaTimingFunction(name:CAMediaTimingFunctionName.easeInEaseOut)
transition.type = CATransitionType.push
transition.subtype = CATransitionSubtype.fromBottom
self.hostNavController?.view.layer.add(transition, forKey: kCATransition)
self.hostNavController?.popViewController(animated: true)

and type of transition you can use are

您可以使用的过渡类型是

kCATransitionFromLeft
kCATransitionFromBottom
kCATransitionFromRight
kCATransitionFromTop

回答by Tamás Sengel

Swift 4.2+ solution based on Nex Mishra's answer:

基于Nex Mishra 回答的Swift 4.2+ 解决方案：

let transition = CATransition()
transition.duration = 0.5
transition.timingFunction = CAMediaTimingFunction(name: .easeInEaseOut)
transition.type = .push
transition.subtype = .fromBottom
navigationController?.view.layer.add(transition, forKey: kCATransition) 
navigationController?.pushViewController([destination VC], animated: false)

回答by Starsky

I had a similar situation where I needed to show a navigation item with some UIBarButtonItems on a view controller, but when presenting modally, it wasn't showing up. It was showing only when pushing from a navigationController, but I really needed the animation from bottom -> up. I tried the CATransition examples from above, but it brought up another bug where there was like a black shadow / translucent background during the animation. I came up with a pretty simple solution in the end:

我有一个类似的情况，我需要在视图控制器上显示带有一些 UIBarButtonItems 的导航项，但是当以模态呈现时，它没有显示出来。它仅在从导航控制器推送时显示，但我真的需要从底部 - > 向上的动画。我尝试了上面的 CATransition 示例，但它带来了另一个错误，在动画过程中出现黑色阴影/半透明背景。最后我想出了一个非常简单的解决方案：

let someVC = storyboard?.instantiateViewController(withIdentifier: "SomeVC") as! SomeVC
let navController = UINavigationController(rootViewController: someVC)
navigationController?.present(navController, animated: true, completion: nil)

And to close the view controller and get rid of the navigation controller altogether, you just call:

要关闭视图控制器并完全摆脱导航控制器，您只需调用：

self.dismiss(animated: true, completion: nil)

This will dismiss the view controller, and will release our navigationController from memory.

这将关闭视图控制器，并将从内存中释放我们的 navigationController。

It is a simple solution in the end, but I spent some time until coming up with it. Maybe I'll save someone else's time :)

最后这是一个简单的解决方案，但我花了一些时间才想出它。也许我会节省别人的时间:)

回答by COVID19

Swift 5.0 And Later

Swift 5.0 及更高版本

  let transition:CATransition = CATransition()
  transition.duration = 0.5
  transition.timingFunction = CAMediaTimingFunction(name: CAMediaTimingFunctionName.easeInEaseOut)
  transition.type = CATransitionType.push
  transition.subtype = CATransitionSubtype.fromTop
  self.navigationController!.view.layer.add(transition, forKey: kCATransition)

回答by Jogendra.Com

Updated with Swift 5 and Xcode 11.4

使用 Swift 5 和 Xcode 11.4 更新

Controller push in present animation style

当前动画风格的控制器推送

    let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
    let viewController = storyBoard.instantiateViewController(withIdentifier: "ViewController") as! ViewController

    let transition = CATransition()
    transition.duration = 0.5
    transition.timingFunction = CAMediaTimingFunction(name: CAMediaTimingFunctionName.easeInEaseOut)
    transition.type = CATransitionType.moveIn
    transition.subtype = CATransitionSubtype.fromTop
    self.navigationController?.view.layer.add(transition, forKey: nil)
    self.navigationController?.pushViewController(viewController, animated: false)

PopToView Controller in Dismiss Style

Dismiss 风格的 PopToView 控制器

            let transition:CATransition = CATransition()
        transition.duration = 0.5
        transition.timingFunction = CAMediaTimingFunction(name:CAMediaTimingFunctionName.easeInEaseOut)
        transition.type = CATransitionType.reveal
        transition.subtype = CATransitionSubtype.fromBottom
        self.navigationController?.view.layer.add(transition, forKey: kCATransition)
        self.navigationController?.popViewController(animated: false)