ios-navigationview

来源： https://stackoverflow.com/questions/57661962/is-onappear-and-ondisappear-in-a-navigationview-of-a-swiftui-app-behaving-as-exp

来源： https://stackoverflow.com/questions/57661962/is-onappear-and-ondisappear-in-a-navigationview-of-a-swiftui-app-behaving-as-exp

来源： https://stackoverflow.com/questions/57661962/is-onappear-and-ondisappear-in-a-navigationview-of-a-swiftui-app-behaving-as-exp

问题 I am working with a SwiftUI based app that relies on a NavigationView to transition from screens. I have a requirement to set the background color on the navigation bar and have found code that makes this work most of the time. When the app is launched in portrait mode, everything works properly across rotations. However, when the app is launched in landscape mode, the bar is the default gray and only updates after the first rotation. Below, I have the minimal amount of code to recreate my

问题 I have a SwiftUI app where sometimes a bug in the display appears. I have a NavagigationView that sould display like this : But sometimes in devices it appears like this(bug display at the top of the page): I don't understand where this comes from. EDIT: Here is the code of this page: struct FilesAdminView: View { @EnvironmentObject var session : SessionStore @ObservedObject var fileAdminViewModel : FileAdminViewModel = FileAdminViewModel() @State var showFilterPopUp : Bool = false @State var

问题 I am using SwiftUI to create NavigationLinks from rows to detail views in a NavigationView (similar to what is being done in the tutorial https://developer.apple.com/tutorials/swiftui/building-lists-and-navigation). However, when I test in my app, the NavgiationLink immediately navigates back from the detail view to the previous view after being tapped (the detail view only shows up for only a second). Here's the code: struct ItemsView: View { var body: some View { NavigationView { VStack {

问题 I'm working with SwiftUI and I have a starting page. When a user presses a button on this page, a modal sheet pops up. In side the modal sheet, I have some code like this: NavigationLink(destination: NextView(), tag: 2, selection: $tag) { EmptyView() } and my modal sheet view is wrapped inside of a Navigation View. When the value of tag becomes 2, the view does indeed go to NextView(), but it's also presented as a modal sheet that the user can swipe down from, and I don't want this. I'd like

问题 I want to set an image in the titleView of NavigationBar in SwiftUI, as we do in UIKit navigationItem.titleView = UIImageView(image: UIImage(named: "logo")) this is how we do it in UIKit. anyone know how to do it? 回答1: Here's how to do it: Add SwiftUIX to your project. Set your custom title view via View.navigationBarTitleView(_:displayMode:) Example code: struct ContentView: View { public var body: some View { NavigationView { Text("Hello World") .navigationBarTitleView(MyView()) } } } 回答2:

问题 I want to set an image in the titleView of NavigationBar in SwiftUI, as we do in UIKit navigationItem.titleView = UIImageView(image: UIImage(named: "logo")) this is how we do it in UIKit. anyone know how to do it? 回答1: Here's how to do it: Add SwiftUIX to your project. Set your custom title view via View.navigationBarTitleView(_:displayMode:) Example code: struct ContentView: View { public var body: some View { NavigationView { Text("Hello World") .navigationBarTitleView(MyView()) } } } 回答2:

问题 I want to set an image in the titleView of NavigationBar in SwiftUI, as we do in UIKit navigationItem.titleView = UIImageView(image: UIImage(named: "logo")) this is how we do it in UIKit. anyone know how to do it? 回答1: Here's how to do it: Add SwiftUIX to your project. Set your custom title view via View.navigationBarTitleView(_:displayMode:) Example code: struct ContentView: View { public var body: some View { NavigationView { Text("Hello World") .navigationBarTitleView(MyView()) } } } 回答2: