I'm working on the audio player portion of my app and inside the player view, I have a simple if statement check. It looks to make sure there is an instance of the audioManager.player and if there is one, it created the vstacks/hstacks etc.
For some reason, it is failing on that check and saying there is no instance of the audioManager and not loading the appropriate view. Its not working with the simulator where I create the instance of AudioManager() on app start up and its not working in the preview either where I'm directly injecting the instance which makes no sense.
I do notice that .autoconnect() is white? I'm not sure if that means its not recognizing something or what.
Here is the code for the view player
import SwiftUI
struct listeningActivity: View {
@EnvironmentObject var audioManager: AudioManager
var listeningActivityVM:ListeningActivityViewModel
@State private var value: Double = 0.0
@State private var isEditing: Bool = false
let timer = Timer.publish(every: 0.5, on: .main, in: .common)
.autoconnect()
var body: some View {
ZStack{
Image("pot")
.resizable()
.scaledToFill()
.frame(width: UIScreen.main.bounds.width)
.ignoresSafeArea()
VStack(spacing: 32) {
HStack {
Button {
} label: {
Image(systemName: "xmark.circle.fill")
.font(.system(size:36))
.foregroundColor(.white)
}
Spacer()
}
Text("pasta carbonoara")
.font(.title)
.foregroundColor(.white)
Spacer()
if let player = audioManager.player {
VStack(spacing: 5){
Slider(value: $value, in: 0...player.duration) { editing
in
print("editing", editing)
isEditing = editing
if !editing {
player.currentTime = value
}
}
.scaleEffect(1.5)
.frame(width: 200, height: 20)
.tint(.orange)
.padding(.top, 50)
HStack{
Text(DateComponentsFormatter.positional
.string(from: player.currentTime) ?? "0:00")
Spacer()
Text(DateComponentsFormatter.positional
.string(from: player.duration - player.currentTime) ?? "0:00")
}.padding([.leading, .trailing], 40)
.padding(.top, 15)
}
HStack{
PlaybackControlButton(systemName: "repeat") {
}
Spacer()
PlaybackControlButton(systemName: "gobackward.10") {
}
Spacer()
PlaybackControlButton(systemName: player.isPlaying ? "pause.circle.fill" : "play.circle.fill", fontSize: 44) {
audioManager.playPlause()
}
Spacer()
PlaybackControlButton(systemName: "goforward.10") {
}
Spacer()
PlaybackControlButton(systemName: "stop.fill") {
}
}
}
}
.padding(20)
}
.onAppear{
audioManager.startPlayer(track: listeningActivityVM.audioAct.track)
}.onReceive(timer) { _ in
guard let player = audioManager.player, !isEditing else {return}
value = player.currentTime
}
}
}
struct listeningActivity_Previews: PreviewProvider {
static let listeningActivityVM = ListeningActivityViewModel(audioAct: audioActivty.data)
static var previews: some View {
listeningActivity(listeningActivityVM: listeningActivityVM)
.environmentObject(AudioManager())
}
}
This is my AudioManager() code
import Foundation
import AVKit
final class AudioManager: ObservableObject{
var player: AVAudioPlayer?
func startPlayer(track: String) {
guard let url = Bundle.main.url(forResource: track, withExtension: "wav") else {
print("Resource not found: \(track)")
return
}
do {
try AVAudioSession.sharedInstance().setCategory(.playback, mode: .default)
try AVAudioSession.sharedInstance().setActive(true)
player = try AVAudioPlayer(contentsOf: url)
player?.play()
}catch{
print("Fail to initialize player", error)
}
}
func playPlause() {
guard let player = player else {
print("Instance of audio player not found")
return
}
if player.isPlaying {
player.pause()
}else {
player.play()
}
}
}
