小编Can*_*ndy的帖子

我想像 safari 一样按滚动方向显示或隐藏项目。向上滚动时隐藏某些内容，向下滚动时显示它。

我在我的代码中使用了以下示例（iOS SwiftUI：以编程方式弹出或关闭视图），但我不知道如何创建动画，就像翻页一样，并在点击 [Button] 时延迟几秒钟。有谁知道解决方案？

struct DetailView: View {
    @Environment(\.presentationMode) var presentationMode: Binding<PresentationMode>
    var body: some View {
        Button(
            "Here is Detail View. Tap to go back.",
            action: {

                //withAnimation(.linear(duration: 5).delay(5))// Error occurred in dalay.(Type of expression is ambiguous without more context)
                withAnimation(.linear(duration: 5)) // not work 
                {
                    self.presentationMode.wrappedValue.dismiss()
                }
        }
        )
    }
}

struct RootView: View {
    var body: some View {
        VStack {
            NavigationLink(destination: DetailView())
            { Text("I am Root. Tap for Detail View.")
        }
    }
}

struct …