import SwiftUI

struct SheetsBasicDemo: View {
  @State private var show = false
  var body: some View {
    Button("Show Sheet") { show = true }
      .sheet(isPresented: $show) {
        VStack(spacing: 12) {
          Text("Modal")
          Button("Close") { show = false }
        }
        .padding()
      }
  }
}

                    

import SwiftUI

struct ContentView: View {
  var body: some View { SheetsBasicDemo() }
}

                    

import SwiftUI

@main
struct MyApp: App {
  var body: some Scene { WindowGroup { ContentView() } }
}