swiftui

问题 I have a SwiftUI app that I want to maintain iOS 13 support for, but on iOS 14 I want to use the new LazyVStack and LazyHStack . I was thinking typealias would be perfect for this, but wasn't sure how to properly set this up so the alias is used on iOS 13 but not on 14. I tried this, but believe this would make the alias available on iOS 13 and up, so would include it on iOS 14 too. Is there a way to set the availability to iOS 13 only? Or is there a better way to do this? @available(iOS 13.0

问题 I have a SwiftUI app that I want to maintain iOS 13 support for, but on iOS 14 I want to use the new LazyVStack and LazyHStack . I was thinking typealias would be perfect for this, but wasn't sure how to properly set this up so the alias is used on iOS 13 but not on 14. I tried this, but believe this would make the alias available on iOS 13 and up, so would include it on iOS 14 too. Is there a way to set the availability to iOS 13 only? Or is there a better way to do this? @available(iOS 13.0

问题 I came across a weird Issue in SwiftUI. I created a simple View that only holds a Button and a TabView that uses the PageViewStyle. It seems that the TabView does not update it's content correctly depending on the State of the Variable. It seems that the content gets updated somehow but the View wont be updated how I would expect Here is the Code of my View: struct ContentView: View { @State var numberOfPages: Int = 0 @State var selectedIndex = 0 var body: some View { VStack { Text("Tap Me")

问题 I came across a weird Issue in SwiftUI. I created a simple View that only holds a Button and a TabView that uses the PageViewStyle. It seems that the TabView does not update it's content correctly depending on the State of the Variable. It seems that the content gets updated somehow but the View wont be updated how I would expect Here is the Code of my View: struct ContentView: View { @State var numberOfPages: Int = 0 @State var selectedIndex = 0 var body: some View { VStack { Text("Tap Me")

问题 I'm trying to create a nested hierarchical list, so that for each task I can have subtasks like in iOS reminders app: First attempt was to embed another list inside a list cell. import SwiftUI struct SwiftUIView: View { var body: some View { List { List { Text("Hello, World!") } } } } struct SwiftUIView_Previews: PreviewProvider { static var previews: some View { SwiftUIView() } But, didn't work out... Anyone can help? cheers 回答1: Why do you think it should be List in List... Such visual

问题 I'm trying to create a nested hierarchical list, so that for each task I can have subtasks like in iOS reminders app: First attempt was to embed another list inside a list cell. import SwiftUI struct SwiftUIView: View { var body: some View { List { List { Text("Hello, World!") } } } } struct SwiftUIView_Previews: PreviewProvider { static var previews: some View { SwiftUIView() } But, didn't work out... Anyone can help? cheers 回答1: Why do you think it should be List in List... Such visual

问题 I'm trying to create a nested hierarchical list, so that for each task I can have subtasks like in iOS reminders app: First attempt was to embed another list inside a list cell. import SwiftUI struct SwiftUIView: View { var body: some View { List { List { Text("Hello, World!") } } } } struct SwiftUIView_Previews: PreviewProvider { static var previews: some View { SwiftUIView() } But, didn't work out... Anyone can help? cheers 回答1: Why do you think it should be List in List... Such visual

问题 At this answer the solution work for Scene plus swiftUI. However using @main like: @main struct MyApp: App { @StateObject private var model = MyModel() var body: some Scene { WindowGroup { Router { AppContent() }.environmentObject(self.model) } } } I also tried to get the main window by using var window: NSWindow? { let window = NSApplication.shared.mainWindow return window } Nevertheless, the mainWindow always return nil Update: I need the NSWindow due to the need of conforming with

问题 At this answer the solution work for Scene plus swiftUI. However using @main like: @main struct MyApp: App { @StateObject private var model = MyModel() var body: some Scene { WindowGroup { Router { AppContent() }.environmentObject(self.model) } } } I also tried to get the main window by using var window: NSWindow? { let window = NSApplication.shared.mainWindow return window } Nevertheless, the mainWindow always return nil Update: I need the NSWindow due to the need of conforming with

问题 At this answer the solution work for Scene plus swiftUI. However using @main like: @main struct MyApp: App { @StateObject private var model = MyModel() var body: some Scene { WindowGroup { Router { AppContent() }.environmentObject(self.model) } } } I also tried to get the main window by using var window: NSWindow? { let window = NSApplication.shared.mainWindow return window } Nevertheless, the mainWindow always return nil Update: I need the NSWindow due to the need of conforming with