SwiftUI -将视图悬停在内容视图之外

import SwiftUI

struct ContentView: View {
    var body: some View {
        ZStack {
            // 内容视图
            VStack {
                Text("Hello, SwiftUI!")
                    .font(.largeTitle)
                    .padding()
                
                Spacer() // 用于将内容推至顶部
            }
            
            // 悬浮按钮
            Button(action: {
                // 按钮动作
            }) {
                Image(systemName: "plus")
                    .resizable()
                    .frame(width: 50, height: 50)
                    .background(Color.blue)
                    .foregroundColor(.white)
                    .cornerRadius(25)
            }
            .position(x: UIScreen.main.bounds.width / 2, y: UIScreen.main.bounds.height - 75) // 定位按钮
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}