Swift ui userinput
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This document provides an overview of some key differences between UIKit and SwiftUI frameworks in iOS development. It discusses ContentView and the State framework in SwiftUI, and how to update UI using bindings instead of directly updating UIKit elements. It also summarizes options for alerts, action sheets, sheets and popovers and when to use each. Finally it briefly introduces some common Swift property wrappers like State, ObservedObject, EnvironmentObject and their uses.
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Swift ui userinput
- 3. ContentView @State framework . SwiftUI .
- 4. 1. 2 • •
- 5. UIKIT // count var count = 0 { didSet { countLabel.text = “(count)” } } // UITableView func appendData() { data.append(“New Data”) tableView.reloadData() }
- 6. , !
- 7. SWIFTUI .
- 8. (Toggle) on off . body , @State .
- 9. , . class viewcontroller: ViewController { let model: String = “ ” // func moveToNextView() { let viewController = InfoInputViewController() viewController.model = self.model // self.present(viewController, animated: false, completion: nil) }
- 10. .
- 11. ✅
- 12. ObservableObject @ObservedObject - - @ObservedObject ObservableObject . @State , @ObservedObject . @Published
- 13. @EnvironmentObject . Model 1 , 2 Binding !
- 15. ALERT
- 17. ACTIONSHEET
- 23. • , , . • . • @State .
- 24. ! • @IBOutlet • @NSCopying • @objc • lazy • …
- 26. - . - , . - . - .