iOS15 - 如果新视图的出现更新 ObservedObject，则第一个 NavigationLink 不起作用

Question

This is a really weird issue that I haven't been able to resolve.

It happens only on iOS 15 and only the 1st time I try to open this specific NavigationLink.

I have 3 SwiftUI Views:

• ContentView (entry point)
• DetailView
• ItemView

ContentView is a list of DetailViews and in detail views there can be any amount if ItemViews.

I have an ObservableObject with a Published property count , that is only accessed from ContentView. In ItemView I have function that's triggered by onAppear , that updates count in the ObservedObject.

When I open an ItemView for the first time after opening the App, it moves to the view but immediately goes back to DetailView. It doesn't happen, when I open it again, even though count is updated again.

I have spent a lot of time debugging this issue, but I'm out of ideas. I have tried reproducing it in a Swift Playground, but everything I've tried there seems to work as expected.

I hope someone has an idea on how I can resolve this issue, I would be most grateful!

Answer 1

If you are using a nav link, I would highly suggest using a custom one instead. I can't understand why this is only happening in ios 15 for you, but I have had a similar bugs with the same views/logic in previous OS versions.