问题

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:

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

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

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1:

Here is the code for pushing

  let transition:CATransition = CATransition()
    transition.duration = 0.5
    transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
    transition.type = kCATransitionPush
    transition.subtype = kCATransitionFromBottom
    self.navigationController!.view.layer.add(transition, forKey: kCATransition)
    self.navigationController?.pushViewController(dstVC, animated: false)

and type of transition you can use are

 kCATransitionFromLeft
 kCATransitionFromBottom
 kCATransitionFromRight
 kCATransitionFromTop

回答2:

Swift3:

for push :

    // 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:

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3:

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

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4:

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:

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:

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

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

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 :)

回答5:

Swift 5.0 And Later

  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)

来源：https://stackoverflow.com/questions/31970617/push-up-view-controller-from-bottom-using-swift

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