bug fixes & download improvement

MusicPlayer Watch App/ContentView.swift

@@ -10,96 +10,216 @@ import Network
 import AVFoundation
 import UIKit
 
-class IDStr : Identifiable {
-    var s : String = ""
-    var art : Image?
-    var m : AVPlayerItem?
-    init () {self.m = nil}
+class TrackInfo : NSObject, Identifiable, ObservableObject {
+    @Published var s : String = ""
+    @Published var art : Image? = nil
+    @Published var m : AVPlayerItem? = nil
+    @Published var changed = false
+    var cv : ContentView? = nil
+    override init() {
+        super.init()
+    }
     init (str : String, music : AVPlayerItem) {
         self.s = str
         self.m = music
     }
+    func equals_to (other: TrackInfo) -> Bool {
+        return self.m == other.m
+    }
+    func from(other : TrackInfo) {
+        self.s = other.s
+        self.art = other.art
+        self.m = other.m
+        self.changed = !self.changed
+    }
+    override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
+        if (change![.newKey] is NSNull) {
+            self.changed = !self.changed
+            return
+        }
+        if let cv = self.cv {
+            if let idx = cv.music.music.firstIndex(where: { s in
+                change![.newKey] as? AVPlayerItem == s.m
+            }){
+                self.from(other: cv.music.music[idx])
+                cv.update_pbv(idx: idx)
+            }
+        }
+    }
 }
 
 class ListViewModel: ObservableObject {
 
-    @Published var music = Array<IDStr>()
-    
+    @Published var music = Array<TrackInfo>()
+
     func addItem(i : String, m : AVPlayerItem) {
-        music.append(IDStr(str: i, music: m))
+        music.append(TrackInfo(str: i, music: m))
    }
-    func addItem(str : IDStr) {
+    func addItem(str : TrackInfo) {
         music.append(str)
    }
 }
 
 class PlaybackViewProxy {
     var pbv : PlaybackView
-    init(v : PlaybackView) {
+    var tabpbv : PlaybackView
+    init() {
+        pbv = PlaybackView()
+        tabpbv = PlaybackView()
+    }
+    init(v : PlaybackView, tabpbv: PlaybackView) {
         self.pbv = v
+        self.tabpbv = tabpbv
     }
 }
 
 struct ContentView: View {
     @ObservedObject var music = ListViewModel()
+    @ObservedObject var nowplaying : TrackInfo
     @State var pushState = false
-    @State var geo :CGSize = .zero
-    @State var _curr_sel_music : IDStr = IDStr()
-    let pbv : PlaybackViewProxy
+    @State var geo:CGSize = .zero
+    @State var active = false
+    //@State var _curr_sel_music : TrackInfo = TrackInfo()
+    var pbv : PlaybackViewProxy
+    var dir: String
+    
+    func update_pbv(idx: Int) {
+        let m = music.music[idx]
+        if (idx != 0) {
+            music.music = Array(music.music[idx ... (music.music.endIndex - 1)] + music.music[0...idx - 1])
+            self.player.removeAllItems()
+            for i in music.music {
+                i.m!.seek(to: .zero)
+                player.insert(i.m!, after: nil)
+            }
+        }
+        else {
+            m.m!.seek(to: CMTime(value: 1, timescale: 10000))
+        }
+        
+        //if !m.equals_to(other: self.nowplaying) {
+        if (self.active) {
+            self.pbv.tabpbv.update(music: m)
+        }
+        else {
+            self.pbv.pbv.update(music: m)
+        }
+        
+    }
+    
+    func update_pbv(m: TrackInfo) {
+        if let idx = music.music.firstIndex(where: { s in s.s == m.s }){
+            self.update_pbv(idx: idx)
+        }
+    }
     var body: some View {
-        GeometryReader { geometry in
-            NavigationView(){
-                List() {
-                    ForEach(music.music) { m in
-                        VStack(){
-                            Button(m.s, action: {
-                                let idx = music.music.firstIndex { s in
-                                    s.s == m.s
-                                }
-                                if (idx != nil) {
-                                    if (idx != 0) {
-                                        music.music = Array(music.music[idx! ... (music.music.endIndex - 1)] + music.music[0...idx! - 1])
-                                        self.player?.removeAllItems()
-                                        for i in music.music {
-                                            i.m!.seek(to: .zero)
-                                            player?.insert(i.m!, after: nil)
-                                        }
-                                    }
-                                    else {
-                                        m.m!.seek(to: .zero)
-                                    }
-                                }
-                                self._curr_sel_music = m
-                                self.pbv.pbv.update(music: _curr_sel_music)
-                                pushState = true
-                            }).ignoresSafeArea(.all).cornerRadius(.zero).padding(.zero).frame(maxHeight: CGFloat(50)).foregroundColor(.white)
-                            
-                            NavigationLink(destination: self.pbv.pbv, isActive: $pushState) {
-                                EmptyView()
+        NavigationStack {
+            TabView {
+                GeometryReader { geometry in
+                    List() {
+                        ForEach(music.music) { m in
+                            VStack(){
+                                NavigationLink(m.s, value: m)
+                                    .ignoresSafeArea(.all)
+                                    .cornerRadius(.zero)
+                                    .padding(.zero)
+                                    .frame(maxHeight: CGFloat(50))
+                                    .foregroundColor(.white)
                             }
                         }
+                        Label("\(music.music.count) Files.    ", systemImage: "heart.fill").background(.clear).labelStyle(.titleAndIcon).frame(width: geometry.size.width, alignment: .center)
                     }
-                    Label("\(music.music.count) Files.    ", systemImage: "heart.fill").background(.clear).labelStyle(.titleAndIcon).frame(width: geometry.size.width, alignment: .center)
-                }
-            }.onAppear {
-                geo = geometry.size
-                self.pbv.pbv.parent = self
+                    .navigationTitle("Songs")
+                    .navigationBarBackButtonHidden(false)
+                    .onAppear {
+                        self.active = true
+                        geo = geometry.size
+                        self.pbv.tabpbv.update(music: self.nowplaying)
+                    }
+                }.navigationDestination(for: TrackInfo.self) { m in
+                    {
+                        m -> PlaybackView in
+                        if self.active {
+                            self.active = false
+                            update_pbv(m:m)
+                        }
+                        self.pbv.tabpbv.trackInfo.m = nil
+                        return self.pbv.pbv
+                    } (m)
+                }.navigationBarBackButtonHidden(false)
+                    .toolbar(.visible, for: .navigationBar)
+                
+                self.pbv.tabpbv
             }
         }
-        }
+        
+    }
      
-    var player : AVQueuePlayer? = nil
+    var player : AVQueuePlayer
+    func add_music (filename: String) {
+        
+        let file_url = URL(filePath: dir + "/Documents/" + filename)
+        let asset = AVAsset(url: file_url)
+        let track = TrackInfo()
     
+        asset.loadMetadata(for: .iTunesMetadata) {
+            items, b in
+            if (items == nil) { return }
+            for i in items! {
+                if(i.identifier == .iTunesMetadataCoverArt) {
+                    Task{
+                        let imageData = try await i.load(.dataValue)
+                        track.art = Image(uiImage: UIImage(data: imageData!)!)
+                        /*if (track.art != nil) {
+                            track.art!.resizable().scaledToFill().frame(width: geo.width, height: geo.height)
+                        }*/
+                    }
+                }
+            }
+        }
+        let item = AVPlayerItem(url: file_url)
+        track.s = filename.prefix(filename.count - 4).removingPercentEncoding!
+        track.m = item
+        self.music.addItem(str: track)
+        //item.addObserver(self, forKeyPath: "status", context: nil)
+        self.player.insert(item, after: nil)
+        
+        if (self.player.status == .failed) {
+            print(self.player.error!)
+        }
+        else {
+            //self.player.play()
+        }
+    }
     init() {
-        self.pbv = PlaybackViewProxy(v: PlaybackView())
+        self.pbv = PlaybackViewProxy()
         let base = "https://billsun.dev/webdav/music-test"
         let url = URL(string: base)
-        let request: URLRequest = URLRequest(url: url!)
+        var request: URLRequest = URLRequest(url: url!)
         let session = URLSession(configuration: .default)
-        let dir = NSHomeDirectory()
+        self.dir = NSHomeDirectory()
+        let dir = self.dir
+        
+        do {
+            let session = AVAudioSession.sharedInstance()
+            try session.setCategory(AVAudioSession.Category.playback)
+        } catch {
+            print(error)
+        }
+        self.player = AVQueuePlayer()
+        self.nowplaying = TrackInfo()
+        
+        self.nowplaying.cv = self
+        
+        self.pbv.pbv.parent = self
+        self.pbv.tabpbv.parent = self
+        
+        self.player.audiovisualBackgroundPlaybackPolicy = .continuesIfPossible
+        
+        self.player.addObserver(self.nowplaying, forKeyPath: "currentItem",options: [.old, .new], context: &self)
         
         session.dataTask(with: request, completionHandler:
-        { (data, response, error) -> Void in
+        { [self] (data, response, error) -> Void in
             if (error != nil) { return }
             let reply = String(data: data!, encoding: String.Encoding.utf8)!
             
@@ -131,66 +251,58 @@ struct ContentView: View {
                     check_file(filepath)
                     check_file("\(dir)/Documents/\(_file)")
                     if (download) {
-                        session.dataTask(with: URLRequest(url: URL(string: base + "/" +  _file)!)) {
-                            (data, response, error) -> Void in
+                        var tries = 16
+                        /*
+                        func try_save_response (data: Data?, response: URLResponse?, error: Error?) -> Void {
                             if (error == nil) {
                                 let fp = fopen(filepath, "wb")
                                 data!.withUnsafeBytes({ ptr in
                                     fwrite(ptr, 1, data!.count, fp)
                                 })
                                 fclose(fp)
+                                add_music(filename: file)
+                            }
+                            else {
+                                if (tries > 0) {
+                                    tries -= 1
+                                    session.dataTask(with: URLRequest(url: URL(string: base + "/" +  _file)!, timeoutInterval: TimeInterval(100000 * (5 - tries))), completionHandler: try_save_response).resume()
+                                }
                             }
-                        }.resume()
+                        }*/
+                        
+                        var req = URLRequest(url: URL(string: base + "/" +  _file)!, timeoutInterval: 65536)
+                        func try_download (u: URL?, r: URLResponse?, e: Error?) -> Void { // use download to avoid memory overflow
+                            if (e == nil) {
+                                do {
+                                    try FileManager.default.moveItem(at: u!, to: URL(filePath: filepath))
+                                } catch { print(error) }
+                                add_music(filename: file)
+                            } else if (tries > 0) {
+                                tries -= 1
+                                if let e = e as? NSError,
+                                   let data = e.userInfo[NSURLSessionDownloadTaskResumeData] as? Data {
+                                    session.downloadTask(withResumeData: data, completionHandler: try_download).resume()
+                                }
+                                else {
+                                    session.downloadTask(with: req, completionHandler: try_download).resume()
+                                }
+                            }
+                        }
+                        session.downloadTask(with: req, completionHandler: try_download).resume()
+                        
+                    
+                        //session.dataTask(with: URLRequest(url: URL(string: base + "/" +  _file)!, timeoutInterval: TimeInterval(65535)), completionHandler: try_save_response).resume()
                     }
                 }
             }catch{}
         }
         ).resume()
+        
         let enumerator = FileManager.default.enumerator(atPath: dir + "/Documents/")
-        enumerator!.forEach({ e in
-            if (self.player == nil) {
-                do {
-                    let session = AVAudioSession.sharedInstance()
-                    try session.setCategory(AVAudioSession.Category.playback)
-                } catch {
-                    print(error)
-                }
-                self.player = AVQueuePlayer()
-            }
-            let filename = (e as! String)
-            let file_url = URL(filePath: dir + "/Documents/" + filename)
-            let asset = AVAsset(url: file_url)
-            let idstr = IDStr()
-            let geo = self.geo
-            asset.loadMetadata(for: .iTunesMetadata) {
-                items, b in
-                if (items == nil) { return }
-                for i in items! {
-                    if(i.identifier == .iTunesMetadataCoverArt) {
-                        Task{
-                            let imageData = try await i.load(.dataValue)
-                            idstr.art = Image(uiImage: UIImage(data: imageData!)!)
-                            /*if (idstr.art != nil) {
-                                idstr.art!.resizable().scaledToFill().frame(width: geo.width, height: geo.height)
-                            }*/
-                        }
-                    }
-                }
-            }
-            let item = AVPlayerItem(url: file_url)
-            idstr.s = filename.prefix(filename.count - 4).removingPercentEncoding!
-            idstr.m = item
-            self.music.addItem(str: idstr)
-            //item.addObserver(self, forKeyPath: "status", context: nil)
-            self.player?.insert(item, after: nil)
-            
-            if (self.player?.status == .failed) {
-                print(self.player!.error!)
-            }
-            else {
-                self.player?.play()
-            }
-        })
+        enumerator!.forEach({ e in add_music(filename: (e as! String))})
+        
+        self.pbv.pbv.update(music: self.nowplaying)
+        self.pbv.tabpbv.update(music: self.nowplaying)
     }
     
 }

MusicPlayer Watch App/MusicPlayerApp.swift

@@ -13,7 +13,14 @@ struct MusicPlayer_Watch_AppApp: App {
     
     var body: some Scene {
         WindowGroup {
-            ContentView().cornerRadius(.zero).padding(.zero)
+            ContentView().cornerRadius(.zero)
+                .padding(.zero)
+                .frame(
+                    width: WKInterfaceDevice.current().screenBounds.width,
+                    height: WKInterfaceDevice.current().screenBounds.height
+                ).tabItem {
+                    Image(systemName: "circle.fill")
+                }
         }
     }
     

MusicPlayer Watch App/PlaybackView.swift

@@ -8,110 +8,129 @@
 import SwiftUI
 import UIKit
 
+class AppearTimer : ObservableObject {
+    @Published var appear = false
+    var timeout = 0
+    let lock : NSLock = NSLock()
+    
+    func appear(time: Int = 5, _appear: Bool = false) {
+        self.lock.lock()
+        self.timeout = self.timeout + time
+        self.appear = timeout > 0
+        DispatchQueue.main.asyncAfter(deadline: .now().advanced(by: .seconds(time)),
+            execute: {
+                self.lock.lock()
+                self.timeout -= time
+                self.appear = self.timeout > 0
+                self.lock.unlock()
+            }
+        )
+        self.lock.unlock()
+    }
+}
 
 
 struct PlaybackView: View {
-    
-    var placeholder: Image? = nil
-    var music : IDStr? = nil
+    //var music : TrackInfo? = nil
     var parent : ContentView? = nil
     //@ObservedObject var timeout = Timeout(timeout: 5)
     var title = ""
+    
     @State var playing = true
-    @State private var appearSelf = true
+    @State private var appearSelf = 3
     
+    @ObservedObject var appearTimer = AppearTimer()
+    @ObservedObject var trackInfo : TrackInfo = TrackInfo()
+    
+
     var body: some View {
-        if parent != nil {
+        if trackInfo.m != nil {
             GeometryReader { geo in
                 ZStack {
-                    if(placeholder == nil) {
-                        Image(systemName: "square")
+                    if(trackInfo.art == nil) {
+                        
+                        Image(systemName: "music.note")
                             .resizable()
-                            .scaledToFill()
-                            .foregroundColor(.black)
+                            .scaledToFit()
+                            .foregroundColor(.white)
+                            .frame(width: geo.size.width*0.84, height: geo.size.height*0.84)
+                            .padding(.leading, geo.size.width*0.08)
+                            .padding(.top, geo.size.height*0.08)
                     }
                     else {
-                        placeholder!.resizable().scaledToFill()
+                        trackInfo.art!.resizable().scaledToFill()
                     }
-                    if (appearSelf)
+                    if (appearTimer.appear)
                     {
-                       NavigationView{
-                            VStack{
-                                HStack{
-                                    Button {
-                                        if ( parent!.player!.timeControlStatus == .playing ) {
-                                            parent!.player!.pause()
-                                            self.playing = false
-                                        } else {
-                                            parent!.player!.play()
-                                            self.playing = true
-                                        }
-                                    } label: {
-                                        (
-                                            self.playing ?
-                                            Image(systemName: "stop") :
-                                                Image(systemName: "play")
-                                        )
+                        VStack {
+                            HStack {
+                                Button {
+                                    if ( parent!.player.timeControlStatus == .playing ) {
+                                        parent!.player.pause()
+                                        self.playing = false
+                                    } else {
+                                        parent!.player.play()
+                                        self.playing = true
+                                    }
+                                } label: {
+                                    (
+                                        self.playing ?
+                                        Image(systemName: "stop") :
+                                            Image(systemName: "play")
+                                    )
+                                    .resizable()
+                                    .scaledToFit()
+                                    .frame(width: geo.size.width/5.5)
+                                }.background(Color(red: 0,green: 0,blue: 0,opacity: 0.2))
+                                    .frame(width: geo.size.width/2.5)
+                                    .cornerRadius(90, antialiased: true)
+                                    .foregroundColor(.white)
+                                    .opacity(1)
+                                    .buttonStyle(.plain)
+                                Button {
+                                    let curr = parent!.player.currentItem
+                                    parent!.player.advanceToNextItem()
+                                    curr!.seek(to: .zero)
+                                    parent!.player.play()
+                                    self.playing = true
+                                } label : {
+                                    Image(systemName: "chevron.forward")
                                         .resizable()
                                         .scaledToFit()
-                                        .frame(width: geo.size.width/5.5)
-                                    }.background(Color(red: 0,green: 0,blue: 0,opacity: 0.2))
-                                        .frame(width: geo.size.width/2.5)
-                                        .cornerRadius(90, antialiased: true)
-                                        .foregroundColor(.white)
-                                        .opacity(1)
-                                        .buttonStyle(.plain)
-                                    Button {
-                                        let curr = parent!.player!.currentItem
-                                        parent!.player!.advanceToNextItem()
-                                        curr!.seek(to: .zero)
-                                        parent!.player!.play()
-                                        self.playing = true
-                                    } label : {
-                                        Image(systemName: "chevron.forward")
-                                            .resizable()
-                                            .scaledToFit()
-                                            .frame(width: geo.size.width/7, height: geo.size.height/7)
-                                    }.background(Color.clear)
-                                        .clipShape(Circle())
-                                        .foregroundColor(.white)
-                                        .frame(width: geo.size.width/4, height: geo.size.height/4)
-                                        .padding(0)
-                                        .opacity(1)
-                                        .buttonStyle(.plain)
-                                }
-                            }.onAppear(){
-                                DispatchQueue.main.asyncAfter(deadline: .now() + 3, execute: {
-                                    appearSelf = false
-                                })
-                            }.navigationTitle("\(self.title)")
-                       }.opacity(0.65).navigationBarBackButtonHidden(false)
+                                        .frame(width: geo.size.width/7, height: geo.size.height/7)
+                                }.background(Color.clear)
+                                    .clipShape(Circle())
+                                    .foregroundColor(.white)
+                                    .frame(width: geo.size.width/4, height: geo.size.height/4)
+                                    .padding(0)
+                                    .opacity(1)
+                                    .buttonStyle(.plain)
+                            }
+                        }
                     }
                 }.onTapGesture {
-                    appearSelf = true
-                    DispatchQueue.main.asyncAfter(deadline: .now() + 5, execute: {
-                        appearSelf = false
-                    })
+                    appearTimer.appear()
+                }
+            }.navigationBarBackButtonHidden(false)
+                .toolbar(.visible, for: .navigationBar)
+                .onAppear() {
+                    appearTimer.appear(time: 3, _appear: true)
                 }
-            }
        }
    }
     
     init() { }
-    init(parent:ContentView, music: IDStr? = nil) {
+    init(parent:ContentView, music: TrackInfo? = nil) {
         if music != nil && music!.art != nil {
-            self.placeholder = music!.art!
-            self.music = music
             self.parent = parent
-            self.playing = parent.player!.timeControlStatus == .playing
+            self.playing = parent.player.timeControlStatus == .playing
         }
     }
     
-    mutating func update (music: IDStr) {
-        self.placeholder = music.art
-        self.music = music
+    mutating func update (music: TrackInfo) {
+        self.trackInfo.from(other: music)
         self.title = music.s
-        self.playing = self.parent!.player!.timeControlStatus == .playing
+        self.playing = self.parent!.player.timeControlStatus == .playing
     }
 }
 

MusicPlayer Watch App/TODO.md

@@ -10,7 +10,7 @@
   - Download progress bar, pause/cancel/resume
 - Optimize Detailed Control View
   - Use customized controls
-  - Performance tuning, reuse one view object!
+  - Performance tuning
   - Volume and Seekbar
 - UI Improvements
 - Playback functions Shuffle, Stop after next song, Repeat

MusicPlayer.xcodeproj/project.pbxproj

@@ -20,7 +20,7 @@
 			isa = PBXContainerItemProxy;
 			containerPortal = A95C117329C531C000737618 /* Project object */;
 			proxyType = 1;
-			remoteGlobalIDString = A95C117E29C531C100737618;
+			remoteGlobalTrackInfoing = A95C117E29C531C100737618;
 			remoteInfo = "MusicPlayer Watch App";
 		};
 /* End PBXContainerItemProxy section */

MusicPlayer.xcodeproj/xcshareddata/xcschemes/MusicPlayer Watch App 1.xcscheme

@@ -0,0 +1,96 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1430"
+   version = "2.0">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "A95C117E29C531C100737618"
+               BuildableName = "MusicPlayer Watch App.app"
+               BlueprintName = "MusicPlayer Watch App"
+               ReferencedContainer = "container:MusicPlayer.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "A95C117829C531C100737618"
+               BuildableName = "MusicPlayer.app"
+               BlueprintName = "MusicPlayer"
+               ReferencedContainer = "container:MusicPlayer.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      shouldAutocreateTestPlan = "YES">
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Release"
+      selectedDebuggerIdentifier = ""
+      selectedLauncherIdentifier = "Xcode.IDEFoundation.Launcher.PosixSpawn"
+      disableMainThreadChecker = "YES"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugXPCServices = "NO"
+      debugServiceExtension = "internal"
+      enableGPUValidationMode = "1"
+      allowLocationSimulation = "YES"
+      viewDebuggingEnabled = "No"
+      queueDebuggingEnabled = "No">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A95C117E29C531C100737618"
+            BuildableName = "MusicPlayer Watch App.app"
+            BlueprintName = "MusicPlayer Watch App"
+            ReferencedContainer = "container:MusicPlayer.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A95C117E29C531C100737618"
+            BuildableName = "MusicPlayer Watch App.app"
+            BlueprintName = "MusicPlayer Watch App"
+            ReferencedContainer = "container:MusicPlayer.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

MusicPlayer.xcodeproj/xcshareddata/xcschemes/MusicPlayer Watch App.xcscheme

@@ -45,9 +45,9 @@
       </Testables>
    </TestAction>
    <LaunchAction
-      buildConfiguration = "Release"
-      selectedDebuggerIdentifier = ""
-      selectedLauncherIdentifier = "Xcode.IDEFoundation.Launcher.PosixSpawn"
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       enableASanStackUseAfterReturn = "YES"
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"

MusicPlayer.xcodeproj/xcshareddata/xcschemes/MusicPlayer.xcscheme

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1430"
+   version = "1.7">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "A95C117829C531C100737618"
+               BuildableName = "MusicPlayer.app"
+               BlueprintName = "MusicPlayer"
+               ReferencedContainer = "container:MusicPlayer.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      shouldAutocreateTestPlan = "YES">
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A95C117829C531C100737618"
+            BuildableName = "MusicPlayer.app"
+            BlueprintName = "MusicPlayer"
+            ReferencedContainer = "container:MusicPlayer.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A95C117829C531C100737618"
+            BuildableName = "MusicPlayer.app"
+            BlueprintName = "MusicPlayer"
+            ReferencedContainer = "container:MusicPlayer.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

MusicPlayer.xcodeproj/xcuserdata/bill.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist

@@ -7,17 +7,33 @@
       <BreakpointProxy
          BreakpointExtensionID = "Xcode.Breakpoint.FileBreakpoint">
          <BreakpointContent
-            uuid = "97AD3DB1-A549-419A-B226-A00CBDB192CF"
+            uuid = "F041D2A4-68A2-4A72-AF55-126A4671C51F"
             shouldBeEnabled = "Yes"
             ignoreCount = "0"
             continueAfterRunningActions = "No"
             filePath = "MusicPlayer Watch App/ContentView.swift"
             startingColumnNumber = "9223372036854775807"
             endingColumnNumber = "9223372036854775807"
-            startingLineNumber = "135"
-            endingLineNumber = "135"
-            landmarkName = "init()"
-            landmarkType = "7">
+            startingLineNumber = "284"
+            endingLineNumber = "284"
+            landmarkName = "try_download(u:r:e:)"
+            landmarkType = "9">
+         </BreakpointContent>
+      </BreakpointProxy>
+      <BreakpointProxy
+         BreakpointExtensionID = "Xcode.Breakpoint.FileBreakpoint">
+         <BreakpointContent
+            uuid = "49177A11-3378-488A-968C-D4D34C28279D"
+            shouldBeEnabled = "Yes"
+            ignoreCount = "0"
+            continueAfterRunningActions = "No"
+            filePath = "MusicPlayer Watch App/ContentView.swift"
+            startingColumnNumber = "9223372036854775807"
+            endingColumnNumber = "9223372036854775807"
+            startingLineNumber = "287"
+            endingLineNumber = "287"
+            landmarkName = "try_download(u:r:e:)"
+            landmarkType = "9">
          </BreakpointContent>
       </BreakpointProxy>
    </Breakpoints>

MusicPlayer.xcodeproj/xcuserdata/bill.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -4,11 +4,21 @@
 <dict>
 	<key>SchemeUserState</key>
 	<dict>
+		<key>MusicPlayer Watch App 1.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>2</integer>
+		</dict>
 		<key>MusicPlayer Watch App.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
 			<integer>0</integer>
 		</dict>
+		<key>MusicPlayer.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>1</integer>
+		</dict>
 	</dict>
 	<key>SuppressBuildableAutocreation</key>
 	<dict>