Questions tagged [environmentobject]
120 questions
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2 answers
Can't get SwiftUI View objects to update from @Published ObservableObject or @EnvironmentObject variables
I've done a ton of searching and read a bunch of articles but I cannot get SwiftUI to dynamically update the view based on changing variables in the model, at least the kind of thing I'm doing. Basically I want to update the view based on the app's…
Jordan
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1
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1 answer
Swift Preview problem with @EnvironmentObject
I am having trouble getting an updated preview when using @EnvironmentObject in my Swift project. In the simulator it works fine, but previewing is not. The error it shows is following:
ASET - Audio System Engineer Tools crashed due to missing…
Fabian H.
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1 answer
SwiftUI View Not Updating to Environment Object
I am having an issue getting the ContentBodyView to update properly when a button is pressed in the MenuView.
When I print out the @Published currentPage var, it changes on button press, but doesn't appear to get carried across into ContentBodyView.…
cjochum
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3 answers
SwiftUI @EnvironmentObject error: may be missing as an ancestor of this view -- accessing object in the init()
The following code produces the runtime error: @EnvironmentObject error: may be missing as an ancestor of this view. The tState in the environment is an @ObservedObject.
struct TEditorView: View {
@EnvironmentObject private var tState: TState
…
LostInTheTrees
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1 answer
Get @EnvironmentObject to NSObject class
I have a simple ObservableObject class which I initialize in the App.swift file and pass to the first view:
final class Counter: ObservableObject {}
@main
struct MyCoolApp: App {
@UIApplicationDelegateAdaptor(AppDelegate.self)
private var…
Gargoyle
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0 answers
@Published property in @EnvironmentObject doesn't update the root view of my application
I am trying to make a router object for my application using @EnvironmentObject. But the problem is the @Published property doesn't update the root view when the root view type is updated.
How it should work
A user clicks Sign in with Apple…
vcvcvcvc
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2 answers
String variable in Environment is a get only. Swift
I can get a variable in my environment but I cannot set/update the variable.
My environment object looks like this:
import SwiftUI
import Combine
class UserData: ObservableObject{
@Published var examples = exampleData
}
I have a load function…
Louis Ye
- 134
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1 answer
Swifui: MacOS App: Fetching Core Data in ContentView OK, but how to use the result from AppDelegate?
With Xcode 11.6 (11E708), SwiftUI, for a MacOS app, I have data generated in the ContentView.swift. But I cannot use those data inside the AppDelegate.swift:
Build Succeeded but the print(contentView.order.item) (please see below) produce this…
kali mera
- 13
- 4
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1 answer
SwiftUI Subscribing to property change with EnvironmentObject
Here is my Model:
class Channel: Identifiable, Decodable, ObservableObject {
var id = UUID()
var channelId = ""
var title = ""
var thumbnail = ""
@Published var thumbnailImage : UIImage?
enum CodingKeys: String,…
AvsBest
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1 answer
SwiftUI - ObservableObject, EnvironmentObject, SummaryView
After creating the code, i would like to create a summary view that allows me to view the values that have been chosen in the picker.
How can I do? I read some forums about @ObservableObject and about @EnvironmentObject, but I can't understand…
user13952226
1
vote
1 answer
How do you make a two way binding within a class?
Using @EnvironmentObject I created a class that inherits from ObservableObject and is the hub for @Published global variables. I couldn't create a two way binding from within the class though. How can I accomplish that? The $ doesn't work in classes…
Rich
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1
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1 answer
How to change @EnvironmentObject from class, and not a View
I have a TabView with two child views - PageOneView and PageTwoView. I also have an @EnvironmentObject Data initialized in SceneDelegate. I also have a nested child for each of the PageOneView and PageTwoView. For PageTwoView the nested child is…
Alina
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1
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1 answer
SwiftUI Fatal error: No ObservableObject of type found
I want a single point in my app where I can store some data and quick access it. Before SwiftUI I just had ApplicationDelegate for this purposes. Before I just needed to call kind of appDelegate.userService and it provides to me a single point in…
Matrosov Oleksandr
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1 answer
When using SwiftUI EnvironmentObjects, I get the error saying missing ObservableObject
I get the error Fatal error: No ObservableObject of type RegistrationViewModel found. A View.environmentObject(_:) for RegistrationViewModel may be missing as an ancestor of this view.
struct ContentView: View {
@StateObject var spotifyData =…
SeanMeek
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- 2
0
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1 answer
Setting an @EnvironmentObject value when using AVAudioPlayerDelegate in a SwiftUI view hierarchy
I'm playing a sound in a SwiftUI view, and I'd like to set a value in an @EnvironmentObject when the sound completes.
So, I declare protocol compliance, and my completion handler is duly called. BUT, I can't set a value in my @EnvironmentObject,…
Andromeda
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