media-play-system-sound-on-mac | ios-app-dev-memo

swift

@State var selectedSoundEffect: SoundEffect? = nil

SoundEffectPicker(selection: $selectedSoundEffect)

swift

import AudioToolbox

struct SoundEffect: Hashable {
	let id: SystemSoundID
	let name: String

	func play() {
		AudioServicesPlaySystemSoundWithCompletion(id, nil)
	}
}

extension SoundEffect {
	static let systemSoundEffects: [SoundEffect] = {
		guard let systemSoundFiles = getSystemSoundFileEnumerator() else { return [] }
		return systemSoundFiles.compactMap { item in
			guard let url = item as? URL, let name = url.deletingPathExtension().pathComponents.last else { return nil }
			var soundId: SystemSoundID = 0
			AudioServicesCreateSystemSoundID(url as CFURL, &soundId)
			return soundId > 0 ? SoundEffect(id: soundId, name: name) : nil
		}.sorted(by: { $0.name.compare($1.name) == .orderedAscending })
	}()
}

func getSystemSoundFileEnumerator() -> FileManager.DirectoryEnumerator? {
	guard let libraryDirectory = NSSearchPathForDirectoriesInDomains(.libraryDirectory, .systemDomainMask, true).first,
		  let soundsDirectory = NSURL(string: libraryDirectory)?.appendingPathComponent("Sounds"),
		  let soundFileEnumerator = FileManager.default.enumerator(at: soundsDirectory, includingPropertiesForKeys: nil) else { return nil }
	return soundFileEnumerator
}

import SwiftUI

struct SoundEffectPicker: View {
	@Binding var selection: SoundEffect?

	var body: some View {
		Picker(selection: $selection, label: Text("Sound:")) {
			Text("None").tag(nil as SoundEffect?)
			ForEach(SoundEffect.systemSoundEffects, id: \.self) { sound in
				Text(sound.name).tag(sound as SoundEffect?)
			}
		}.onChange(of: selection) { _, sound in
			sound?.play()
		}
	}
}

func applicationDidFinishLaunching(_: Notification) {
   _ = SoundEffect.systemSoundEffects
}