Question

我想呈现模态视图，并在关闭后再次呈现它。

struct ContentView : View {
    var body: some View {
        NavigationView {
            Group {
                Text("hi")
                Text("hello")
                }
                .navigationBarItem(title: Text("Demo"))
                .navigationBarItems(trailing:
                    PresentationButton(
                        Image(systemName: "person.crop.circle")
                            .imageScale(.large)
                            .accessibility(label: Text("User Profile"))
                            .padding(),
                        destination: Text("User Profile")
                    )
            )
        }
    }
}

仅在第一次点击时触发。取消目标视图后，点击PresentationButton不会执行任何操作。有人对此有解决方案吗？

Answer 1

它看起来像个错误，这是一种解决方法：

struct ContentView : View {

    @State var showModal: Bool = false

    var body: some View {
        NavigationView {
            Group {
                Text("hi")
                Text("hello")
            }
            .navigationBarItem(title: Text("Demo"))
            .navigationBarItems(trailing:
                Button(action: {
                    self.showModal = true
                }) {
                    Image(systemName: "person.crop.circle")
                }
            )
            }.presentation(showModal ? Modal(Text("Hey"),
                                             onDismiss: { self.showModal = false }) : nil)
    }
}

PresentationButton没有两次触发动作

1 个答案: