SwiftUI - NavigationView title and back button clipped under status bar after orientation change

问题

Whenever I rotate the device to landscape and back again, the top of the NavigationView (including the title and back button) get clipped under the status bar.

Edit: Minimal reproducible example:

struct ContentView: View {
    var body: some View {
        NavigationView {
            ScrollView {
                VStack {
                    ForEach(0..<15) { _ in
                        Text("Filler")
                        .frame(maxWidth: .infinity)
                        .background(Color.green)
                        .padding()
                    }
                }
            }
            .navigationBarTitle("Data")
        }
    }
}

As long as the content is scrollable, the glitch happens. I originally came across this while using a List. It didn't matter if I clicked a row first, went to the popped view, then rotated the device, or just rotated back in the main screen.

struct ContView: View {
    let data = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen"]
    var body: some View {
        NavigationView {
            List {
                ForEach(data, id: \.self) { word in
                    NavigationLink(destination:
                        Text("Link")
                    ) {
                        Text(word)
                    }
                }
            }
            .navigationBarTitle("Data", displayMode: .large)
            .listStyle(InsetGroupedListStyle())
        }
    }
}

Rotating in the main screen:

Rotating after tapping a row:

Is this a bug, or am I doing something wrong?

I also get this printed in the console:

2020-10-19 09:05:30.613243-0700 MyAppName[43106:5613320] Unbalanced calls to begin/end appearance transitions for <TtGC7SwiftUI19UIHostingControllerGVS_15ModifiedContentVVS_22_VariadicView_Children7ElementGVS_18StyleContextWriterVS_19SidebarStyleContext__: 0x10340c180>.

Xcode version: 12.0 (12A7209), running on an iPhone 7 Plus on iOS 14.0

来源：https://stackoverflow.com/questions/64431327/swiftui-navigationview-title-and-back-button-clipped-under-status-bar-after-or

标签

ios

swift

swiftui

swiftui-navigationview