SwiftUI按钮相对于背景的位置

struct ContentView: View {
    var body: some View {
        ZStack {
            Color.blue
                .frame(width: 200, height: 200)
            
            Button(action: {
                // 按钮点击事件
            }) {
                Text("按钮")
                    .foregroundColor(.white)
                    .padding()
                    .background(Color.red)
                    .alignmentGuide(.horizontal) { d in
                        d[.leading]
                    }
                    .alignmentGuide(.vertical) { d in
                        d[.top]
                    }
            }
        }
    }
}