Programmatically go back to previous ViewController in Swift

问题

I send the user over to a page on a button click. This page is a UITableViewController.

Now if the user taps on a cell, I would like to push him back to the previous page.

I thought about something like self.performSegue("back").... but this seems to be a bad idea.

What is the correct way to do it?

回答1:

Swift 3:

If you want to go back to the previous view controller

_ = navigationController?.popViewController(animated: true)

If you want to go back to the root view controller

_ = navigationController?.popToRootViewController(animated: true)

回答2:

Swift 3, Swift 4

if movetoroot { 
    navigationController?.popToRootViewController(animated: true)
} else {
    navigationController?.popViewController(animated: true)
}

navigationController is optional because there might not be one.

回答3:

Swift 3

I might be late in the answer but for swift 3 you can do it this way:

override func viewDidLoad() {
    super.viewDidLoad()

    navigationItem.leftBarButtonItem = UIBarButtonItem(title: "< Back", style: .plain, target: self, action: #selector(backAction))

    // Do any additional setup if required.
}

func backAction(){
    //print("Back Button Clicked")
    dismiss(animated: true, completion: nil)
}

回答4:

Swift 4

there's two ways to return/back to the previous ViewController :

1. First case : if you used : self.navigationController?.pushViewController(yourViewController, animated: true) in this case you need to use self.navigationController?.popViewController(animated: true)
2. Second case : if you used : self.present(yourViewController, animated: true, completion: nil) in this case you need to use self.dismiss(animated: true, completion: nil)

In the first case , be sure that you embedded your ViewController to a navigationController in your storyboard

回答5:

In the case where you presented a UIViewController from within a UIViewController i.e...

// Main View Controller
self.present(otherViewController, animated: true)

Simply call the dismiss function:

// Other View Controller
self.dismiss(animated: true)

回答6:

swift 5 and above

case 1 : using with Navigation controller

self.navigationController?.popViewController(animated: true)

case 2 : using with present view controller

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

回答7:

If Segue is Kind of 'Show' or 'Push' then You can invoke "popViewController(animated: Bool)" on Instance of UINavigationController. Or if segue is kind of "present" then call "dismiss(animated: Bool, completion: (() -> Void)?)" with instance of UIViewController

回答8:

for swift 3 you just need to write the following line of code

_ = navigationController?.popViewController(animated: true)

回答9:

Try this: for the previous view use this:

navigationController?.popViewController(animated: true)  

pop to root use this code:

navigationController?.popToRootViewController(animated: true) 

回答10:

Swift 4.0 Xcode 10.0 with a TabViewController as last view

If your last ViewController is embebed in a TabViewController the below code will send you to the root...

navigationController?.popToRootViewController(animated: true)
navigationController?.popViewController(animated: true)

But If you really want to go back to the last view (That could be Tab1, Tab2 or Tab3 view..)you have to write the below code:

_ = self.navigationController?.popViewController(animated: true)

This works for me, i was using a view after one of my TabView :)

回答11:

For questions regarding how to embed your viewController to a navigationController in the storyboard:

1. Open your storyboard where your different viewController are located
2. Tap the viewController you would like your navigation controller to start from
3. On the top of Xcode, tap "Editor"
4. -> Tap embed in
5. -> Tap "Navigation Controller

回答12:

This one works for me (Swift UI)

struct DetailView: View {
@Environment(\.presentationMode) var presentationMode: Binding<PresentationMode>

  var body: some View {
      VStack {
        Text("This is the detail view")
        Button(action: {
          self.presentationMode.wrappedValue.dismiss()
        }) {
          Text("Back")
        }
      }
    }
}

回答13:

I can redirect to root page by writing code in "viewDidDisappear" of navigated controller,

override func viewDidDisappear(_ animated: Bool) { self.navigationController?.popToRootViewController(animated: true) }

来源：https://stackoverflow.com/questions/28760541/programmatically-go-back-to-previous-viewcontroller-in-swift