joyanokane.swift

import SwiftUI
import AVKit

struct ContentView: View {
  @State var soundLabelIsShows = false
  var body: some View {

    ZStack(alignment: .center) {
      Image("kane")
        .resizable()
        .scaledToFill()
        .frame(height: 200)

      if soundLabelIsShows {
        Text("ゴ〜ン")
          .fontWeight(.bold)
          .font(.system(size: 22))
          .transition(.slide)
          .onAppear {
            DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
              soundLabelIsShows = false
            }
          }
      }
    }
    .padding()
    .onShake {
      sound()
      soundLabelIsShows = true
    }
  }

  func sound() {
    var soundIDBell: SystemSoundID = 0
    let soundURL = URL(fileURLWithPath: Bundle.main.path(forResource: "kane", ofType:"mp3")!)
    AudioServicesCreateSystemSoundID(soundURL as NSURL, &soundIDBell)
    AudioServicesPlaySystemSound(soundIDBell)
  }
}

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

extension UIDevice {
  static let deviceDidShakeNotification = Notification.Name(rawValue: "deviceDidShakeNotification")
}

extension UIWindow {
  open override func motionEnded(_ motion: UIEvent.EventSubtype, with event: UIEvent?) {
    if motion == .motionShake {
      NotificationCenter.default.post(name: UIDevice.deviceDidShakeNotification, object: nil)
    }
  }
}


struct DeviceShakeViewModifier: ViewModifier {
  let action: () -> Void

  func body(content: Content) -> some View {
    content
      .onAppear()
      .onReceive(NotificationCenter.default.publisher(for: UIDevice.deviceDidShakeNotification)) { _ in
        action()
      }
  }
}

extension View {
  func onShake(perform action: @escaping () -> Void) -> some View {
    modifier(DeviceShakeViewModifier(action: action))
  }
}