Created
July 24, 2020 02:28
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| import UIKit | |
| import SwiftUI | |
| class ViewController: UIViewController { | |
| var hosting: UIHostingController<SwiftUIView>? | |
| override func viewDidLoad() { | |
| super.viewDidLoad() | |
| let rootView = SwiftUIView(delegate: self, toggleStatus: false, stepper: 18) | |
| self.hosting = UIHostingController(rootView: rootView) | |
| self.addChild(hosting!) | |
| hosting!.view.frame = self.view.frame | |
| self.view.addSubview(hosting!.view) | |
| } | |
| func buttonPressed(toggleStatus: Bool) { | |
| let message = toggleStatus ? "on" : "off" | |
| let alert = UIAlertController(title: "hello", message: "The toggle is \(message)", preferredStyle: .alert) | |
| let ok = UIAlertAction(title: "OK", style: .default) { (_) in | |
| alert.dismiss(animated: true, | |
| completion: nil) | |
| } | |
| alert.addAction(ok) | |
| self.present(alert, animated: true, completion: nil) | |
| } | |
| } | |
| struct SwiftUIView: View { | |
| weak var delegate: ViewController? | |
| @State var toggleStatus = false | |
| @State var stepper = 0 | |
| func change() { | |
| self.toggleStatus = true | |
| self.stepper = 18 | |
| print("change") | |
| } | |
| func checkup() -> Bool { | |
| return stepper <= 25 && toggleStatus == true | |
| } | |
| var body: some View { | |
| VStack { | |
| Text("Hello") | |
| Text("World") | |
| Spacer() | |
| Toggle(isOn: $toggleStatus, label: { Text("Toggle") }) | |
| Stepper(value: $stepper, in: 0...999, label: { Text("\(stepper) years old") }) | |
| Spacer() | |
| Button(action: { | |
| self.delegate?.buttonPressed(toggleStatus: self.toggleStatus) | |
| }) { | |
| Text("Press Me") | |
| }.disabled(checkup() == false) | |
| } | |
| .padding(.horizontal) | |
| } | |
| } |
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