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Anna Korol
3,772 PointsNo keyboard showed, when I click on the field. Can anyone spot what is wrong with my code?
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var nameTextField: UITextField!
@IBOutlet weak var textFieldBottomConstraint: NSLayoutConstraint!
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self, selector: #selector(ViewController.keyboardWillShow(_:)), name: Notification.Name.UIKeyboardWillShow, object: nil)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "StartAdventure" {
do {
if let name = nameTextField.text {
if name == "" {
throw AdventureError.nameNotProvided
} else {
guard let pageController = segue.destination as? PageController else
{ return }
pageController.page = Adventure.story(withName: name)
}
}
} catch AdventureError.nameNotProvided {
let alertController = UIAlertController(title: "Name Not Provided", message: "Provide a name to start the story", preferredStyle: .alert)
let action = UIAlertAction(title: "OK", style: .default, handler: nil)
alertController.addAction(action)
present(alertController, animated: true, completion: nil)
} catch let error {
fatalError("\(error.localizedDescription)")
}
}
}
@objc func keyboardWillShow(_ notification: Notification) {
if let info = notification.userInfo, let keyboardFrame = info [UIKeyboardFrameEndUserInfoKey] as? NSValue {
let frame = keyboardFrame.cgRectValue
textFieldBottomConstraint.constant = frame.size.height + 10
UIView.animate(withDuration: 0.8) {
self.view.layoutIfNeeded()
}
}
}
deinit {
NotificationCenter.default.removeObserver(self)
}
}
extension ViewController: UITextFieldDelegate {
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
}
```swift
3 Answers

Guillermo Tame
18,542 PointsIn the newest versions of the simulator you have to toggle the keyboard manually. Go to hardware > Keyboard > Toggle Software Keyboard.

JLN CRML
30,362 PointsAre you using the simulator? I remember having some issues there while everything was fine on my hardware device.

David Oliveira
iOS Development with Swift Techdegree Student 4,549 PointsThis didn't work in the simulator, but it did work on my device like you stated.
Interesting! Wonder why that happens like that...
Thanks for this!

Joey Liu
3,982 PointsIf the keyboard is not shown on stimulator, you can press "command⌘ + k" and it will pop up.