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我在 Swift UI 中有一些主要细节。这里是:

import SwiftUI

struct MenuItemView: View {
    var title: String
    @Environment(\.presentationMode) var presentationMode

    private var btnBack : some View { Button(action: {
        //if landscape just show list on the left
        //same if swipe from left
        //how to do that???


        self.presentationMode.wrappedValue.dismiss()
    }) {
        Text("Menu")
        }
    }

    var body: some View {
        Text(title)
            .navigationBarTitle(Text(title), displayMode: .inline)
            .navigationBarBackButtonHidden(true)
            .navigationBarItems(leading: btnBack)
    }
}

struct ContentView: View {
    @State private var items: [String] = ["Home", "Events", "Topics", "Latest"]

    var body: some View {
        NavigationView {
            List {
                ForEach(self.items, id: \.self) { item in
                    NavigationLink(destination: MenuItemView(title: item)) {
                        Text(item)
                    }
                }
            }
            .listStyle(GroupedListStyle())
            .navigationBarTitle(Text("TimelessToday"), displayMode: .inline)

            Text("Initial")
        }
    }
}

#if DEBUG
struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}
#endif

这与我为任何 iPhone 以纵向模式计划的工作方式完全相同。但是在 iPhone 11 的横向或纵向的 iPad 中,我希望按下“菜单”按钮以显示带有项目列表的左侧菜单。就像从左侧滑动显示它一样。

无法理解如何做到这一点。

4

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