In swift playgrounds how do you setup a viewcontroller and use it? I've done it with a UIView before but the UI gets cut when in a difference orientation so I want to try use a viewcontroller.
I've got let view = UIViewController()
but after that how do I set it up to add a background and stuff on it?
To create a view controller in a Swift playground you need this code:
import UIKit
import PlaygroundSupport
class ViewController: UIViewController{
override func viewDidLoad() {
super.viewDidLoad()
// do setup here
}
}
let viewController = ViewController()
PlaygroundPage.current.liveView = viewController
PlaygroundPage.current.needsIndefiniteExecution = true
Example of UIViewController in Playground with multiple Subviews and Auto layout.
import UIKit
import PlaygroundSupport
class ViewController : UIViewController {
var yellowView: UIView!
var redView: UIView!
override func loadView() {
// UI
let view = UIView()
view.backgroundColor = .white
yellowView = UIView()
yellowView.backgroundColor = .yellow
view.addSubview(yellowView)
redView = UIView()
redView.backgroundColor = .red
view.addSubview(redView)
// Layout
redView.translatesAutoresizingMaskIntoConstraints = false
yellowView.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
yellowView.topAnchor.constraint(equalTo: view.topAnchor, constant: 20),
yellowView.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 20),
yellowView.widthAnchor.constraint(equalToConstant: 80),
yellowView.heightAnchor.constraint(equalToConstant: 80),
redView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: -20),
redView.trailingAnchor.constraint(equalTo: view.trailingAnchor,constant: -20),
redView.widthAnchor.constraint(equalToConstant: 80),
redView.heightAnchor.constraint(equalToConstant: 80)
])
self.view = view
}
override func viewDidLoad() {
super.viewDidLoad()
}
}
PlaygroundPage.current.liveView = ViewController()
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With