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Proper replacement for introspectNavigationController #386
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I'am working on rafactoring of the module and updated to swiftui-introspect 1.1.1 from 0.1.1. What is proper migration for introspectNavigationController in a such case:
@State private var navigationController: UINavigationController?
ZStack {
contentView
}
.introspectNavigationController { navC in
navigationController = navC
}
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Is your navigation view inside content? If not, then your view is inside the navigation view instead. If that's the case, then you need to override the lookup scope to introspect outwardly to find ancestors like this:
.introspect(.navigationView(style: .stack), on: .iOS(.v14, .v15, .v16, .v17), scope: .ancestor) { navC in navigationController = navC // breakpoint here }
Replies: 2 comments 2 replies
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Also note, storing it in @State will cause a memory leak. Use @Weak instead — see https://github.com/siteline/swiftui-introspect?tab=readme-ov-file#keep-instances-outside-the-customize-closure.
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@davdroman I saw this, but unfortunately it not working in my case( I've refactored this part as follows:
@_spi(Advanced) import SwiftUIIntrospect
...
@Weak private var navigationController: UINavigationController?
var body: some View {
ZStack {
content
}
.introspect(.navigationView(style: .stack), on: .iOS(.v14, .v15, .v16, .v17)) { navC in
navigationController = navC // breakpoint here
}
...
}
And breakpoin shows that it's not called. So navigationController is nil and that is way it brokes part of the app's functionality. Maybe I've missed something?
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Is your navigation view inside content? If not, then your view is inside the navigation view instead. If that's the case, then you need to override the lookup scope to introspect outwardly to find ancestors like this:
.introspect(.navigationView(style: .stack), on: .iOS(.v14, .v15, .v16, .v17), scope: .ancestor) { navC in navigationController = navC // breakpoint here }
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🎉 1
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Thank you, it works)
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👍 1