【Swift】非同期関数の直列実行 - withCheckedContinuation 👉 https://android.benigumo.com/20240305/sereial-async/

serialize-async-functions.swift

import SwiftUI
import AVFoundation

struct TestView: View {
  var body: some View {
    Button("Play1") {
      AudioServicesPlaySystemSound(1000)
    }

    Divider()

    Button("Play2") {
      AudioServicesPlaySystemSound(SystemSoundID(1000))
    }

    Divider()

    Button("Play3") {
      for i in 1000...1010 {
        AudioServicesPlaySystemSound(SystemSoundID(i))
      }
    }

    Divider()

    Button("Play4") {
      AudioServicesPlaySystemSoundWithCompletion(SystemSoundID(1000)) {
        print("completed.")
      }
    }

    Divider()

    Button("Play5") {
      Task {
        for i in 1000...1010 {
          await withCheckedContinuation { continuation in
            AudioServicesPlaySystemSoundWithCompletion(SystemSoundID(i)) {
              continuation.resume()
            }
          }
        }
      }
    }
  }
}

#Preview {
  TestView()
}