57 questions
1
vote
0
answers
63
views
How to open and display different files in WindowGroup windows (tabs) using fileImporter from CommandGroup on the WindowGroup?
In code below the @State var modelData initializes with empty structures, and in that case the ContentView shows nothing. (This is fine.)
The modelData can also initialize from a file obtained from ...
- 3,288
0
votes
2
answers
226
views
LazyGrid with onTap gesture on items does not work as intended with sheet presentation
I am trying to understand @State. Ignoring the view model in the picture, I am trying to present a view modally with sheet modifier on tapping any item on my lazygrid. For some reason an empty view is ...
- 706
0
votes
1
answer
28
views
Why does the state change back to original state?
I'm new to SwiftUI and I couldn't understand why the selectedUser is set to nil on the fullScreenCover block. Note that User is a class from a third party library and doesn't conform to ...
- 7,848
1
vote
1
answer
222
views
Navigation state restoration with NavigationStack breaks binding
I'm developing an iOS app that lists items in a List inside a NavigationStack. When the user clicks on a item it shows its details, and if he clicks then on the Edit button, he can edit its values (on ...
- 350
0
votes
1
answer
628
views
Publishing a Var from Another @ObservableObject During Init()
How does one publish a property from another ObservableObject which is created during initialization?
I want to ensure a specific property is captured as a @Published/@Binding/@State variable (so it's ...
- 3,802
6
votes
3
answers
2k
views
How to pass the result of @Query as Binding to a view
I want to pass some queried data from SwiftData in other views that receive a Binding array. Like the example below:
struct View1: View {
@Query var data: [MyModel]
var body: some View {
...
- 205
1
vote
1
answer
588
views
Executing Code Based on Elapsed Time in SwiftUI's TimelineView
Lets say you have a SwiftUI app where you are implementing navigation like this:
import SwiftUI
enum ScreenToShow {
case main, child
}
@Observable
class NavigationController {
var screen: ...
- 7,723
3
votes
1
answer
2k
views
SwiftUI view is not updating when embedded into UIHostingController
I have the following simple SwiftUI view:
struct ContentView: View {
var body: some View {
Text(self.label)
}
@State var label = "Initial text."
}
This view is embedded ...
- 330
0
votes
1
answer
184
views
SwiftUI - immutable @State variable when change it "from outside" via UIHostController
Situation
During migration of some UIKit view classes to SwiftUI, I have faced next case:
I have a simple view class, responsible for data fetching and displaying. Its structure is pretty simple and ...
- 1,177
6
votes
3
answers
984
views
SwiftUI: Bound @State Variable Not Updated When Showing Sheet
I am experiencing an issue with SwiftUI where a bound @State variable (displayString) does not seem to get updated in time when a sheet is presented. The code provided consists of a parent view (...
- 7,723
-1
votes
1
answer
53
views
Weird @Binding behavior, doesn't update the value until I set it into different one
So I have this simple test code to test how I can communicate between two views using @Binding. It's supposed to be simple in which there's a list of buttons that when it's pressed it'll open a simple ...
0
votes
0
answers
851
views
SwiftUI Button animation
I use ButtonStyle, for button style. But when I updated button from enable to disable, and change thread, the button change without animation.
//I have ButtonStyle:
struct WizardButtonStyle: ...
- 1
0
votes
1
answer
356
views
NavigationView doesn't update when @State changes (NavigationStack works well)
I encountered this situation when trying to replace my NavigationStack (iOS 16+) by a NavigationView (for backward compatibility reasons). What I hoped for would be that NavigationStack and ...
- 13
3
votes
4
answers
4k
views
SwiftUI State in Preview with PreviewProvider is not working
I've a simple button that work on simulator as expected, the shape changes with click;
struct ButtonTest: View {
@State var isLiked = true
var body: some View {
VStack {
...
- 5,706
0
votes
3
answers
1k
views
setTitleColor not working for custom UIButton in .disabled state
I have a form to collect basic user info. There is a "Continue" button on the form that has different appearances based on whether it is in the .enabled or .disabled state.
The .enabled ...
- 3