I’ve a SwiftUI (document-based) app utilizing Swift Knowledge, working on an iPhone 13 with iOS 17.2. In one of many Views, I’ve
@Setting(.openURL) non-public var openURL
var physique: some View {
VStack {
Button("Open Browser") {
openURL(URL(string: "https://some.url")!)
}
}
.navigationTitle("Settings")
}
When clicking the button, the browser launches usually. Nonetheless, when returning to the app utilizing the “again” navigation hyperlink on the highest left, the app first logs
Publishing adjustments from background threads isn't allowed; make sure that to publish values from the principle thread (through operators like obtain(on:)) on mannequin updates.
Then, in a group getter of 1 the Swift Knowledge @Mannequin-s, presupposed to get a group that’s learn when the app’s GUI is rendered, the appliance crashes, saying
Thread 1: Deadly error: Unable to get worth - no backing Managed Object
The entire thing appears to me as if, when switching again from the browser to my app, your complete GUI had been rendered from a non-main thread (which, as this thread additionally has no ModelContainer und ModelContext, can not load the SwiftData fashions).
Sadly, the decision stack of this Deadly Error above isn’t of a lot assist – the generated SwiftData getter is the one Swift code I see there, up the stack are simply areas throughout the compiled meeting code.
P.s. If I simply manually put my app into the background, begin doing one thing else after which return, the app works fantastic.
Why is that this occurring?
