如何在SwiftUI中按条件将.fullScreenCover()添加到按钮？

struct ContentView: View {
    @State private var isPresented = false
    
    var body: some View {
        Button(action: {
            isPresented = true
        }) {
            Text("Show Full Screen Cover")
        }
        .fullScreenCover(isPresented: $isPresented) {
            FullScreenCoverView()
        }
    }
}

struct FullScreenCoverView: View {
    var body: some View {
        Text("This is a full screen cover view")
            .font(.largeTitle)
            .foregroundColor(.white)
            .frame(maxWidth: .infinity, maxHeight: .infinity)
            .background(Color.blue)
            .edgesIgnoringSafeArea(.all)
    }
}