问题描述
我为 Mac Catalyst
启用了 iPad App
,但遇到了 display Problem
的奇怪 Sidebar
。
代码:
@State private var selection: NavigationItem? = .start
NavigationView {
List(selection: $selection) {
NavigationLink(destination: StartView(),tag: NavigationItem.start,selection: $selection) {
Label("Start",systemImage: "square.grid.2x2.fill")
.accessibility(label: Text("Start"))
}
.tag(NavigationItem.start)
// 4 more Items
}
.listStyle(SidebarListStyle())
.navigationBarTitle("Impfpass+")
StartView()
}
问题:此代码在 Standard Sidebar
上生成 iPad
,但是,如您所见,Mac Version
与此 {{1 }}。我怎样才能达到angular design
?
解决方法
我遇到了同样的问题。
结果是内置的 SidebarListStyle 在 macOS 上运行不正确。
Here 是 Steven Troughton-Smith 建议的解决方案,它意味着将 SwiftUI 视图包装在 UISplitViewController 中。
基本上:
struct SidebarSplitView: View,UIViewControllerRepresentable {
typealias UIViewControllerType = UISplitViewController
let splitViewController = UISplitViewController(style: .doubleColumn)
var columnA = UIViewController()
var columnB = UIViewController()
init<A:View,B:View>(@ViewBuilder content: @escaping () -> TupleView <(A,B)>) {
let content = content()
columnA = UIHostingController(rootView: content.value.0)
columnB = UIHostingController(rootView: content.value.1)
columnA.view.backgroundColor = .clear
columnB.view.backgroundColor = .clear
splitViewController.viewControllers = [columnA,columnB]
}
func makeUIViewController(context: Context) -> UIViewControllerType {
splitViewController.primaryBackgroundStyle = .sidebar
return splitViewController
}
func updateUIViewController(_ uiView: UIViewControllerType,context: Context) { }
}
然后你就可以把它称为:
struct ContentView: View {
var body: some View {
SidebarSplitView {
Sidebar() // here goes your sidebar
MainView() // here your main view
}
}
}