Add initialPosition and initialIndex parameters to load.

just_audio/android/src/main/java/com/ryanheise/just_audio/AudioPlayer.java

@@ -64,6 +64,8 @@ public class AudioPlayer implements MethodCallHandler, Player.EventListener, Aud
     private Long start;
     private Long end;
     private Long seekPos;
+    private long initialPos;
+    private Integer initialIndex;
     private Result prepareResult;
     private Result playResult;
     private Result seekResult;
@@ -185,6 +187,11 @@ public class AudioPlayer implements MethodCallHandler, Player.EventListener, Aud
 
     @Override
     public void onTimelineChanged(Timeline timeline, int reason) {
+        if (initialPos != C.TIME_UNSET || initialIndex != null) {
+            player.seekTo(initialIndex, initialPos);
+            initialIndex = null;
+            initialPos = C.TIME_UNSET;
+        }
         if (reason == Player.TIMELINE_CHANGE_REASON_DYNAMIC) {
             onItemMayHaveChanged();
         }
@@ -285,7 +292,11 @@ public class AudioPlayer implements MethodCallHandler, Player.EventListener, Aud
         try {
             switch (call.method) {
             case "load":
-                load(getAudioSource(request.get("audioSource")), result);
+                Long initialPosition = getLong(request.get("initialPosition"));
+                Integer initialIndex = (Integer)request.get("initialIndex");
+                load(getAudioSource(request.get("audioSource")),
+                        initialPosition == null ? C.TIME_UNSET : initialPosition / 1000,
+                        initialIndex, result);
                 break;
             case "play":
                 play(result);
@@ -316,7 +327,7 @@ public class AudioPlayer implements MethodCallHandler, Player.EventListener, Aud
             case "seek":
                 Long position = getLong(request.get("position"));
                 Integer index = (Integer)request.get("index");
-                seek(position == null ? C.TIME_UNSET : position / 1000, result, index);
+                seek(position == null ? C.TIME_UNSET : position / 1000, index, result);
                 break;
             case "concatenatingInsertAll":
                 concatenating(request.get("id"))
@@ -492,7 +503,9 @@ public class AudioPlayer implements MethodCallHandler, Player.EventListener, Aud
         return new DefaultDataSourceFactory(context, httpDataSourceFactory);
     }
 
-    private void load(final MediaSource mediaSource, final Result result) {
+    private void load(final MediaSource mediaSource, final long initialPosition, final Integer initialIndex, final Result result) {
+        this.initialPos = initialPosition;
+        this.initialIndex = initialIndex;
         switch (processingState) {
         case none:
             break;
@@ -662,7 +675,7 @@ public class AudioPlayer implements MethodCallHandler, Player.EventListener, Aud
         player.setShuffleModeEnabled(enabled);
     }
 
-    public void seek(final long position, final Result result, final Integer index) {
+    public void seek(final long position, final Integer index, final Result result) {
         if (processingState == ProcessingState.none || processingState == ProcessingState.loading) {
             result.success(new HashMap<String, Object>());
             return;

just_audio/example/pubspec.lock

@@ -120,16 +120,16 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.5.4"
+    version: "0.5.4+1"
   just_audio_platform_interface:
     dependency: transitive
     description:
-      name: just_audio_platform_interface
+      path: "../../just_audio_platform_interface"
-      url: "https://pub.dartlang.org"
+      relative: true
-    source: hosted
+    source: path
     version: "1.1.0"
   just_audio_web:
-    dependency: "direct main"
+    dependency: transitive
     description:
       path: "../../just_audio_web"
       relative: true

just_audio/lib/just_audio.dart

@@ -442,20 +442,25 @@ class AudioPlayer {
   Future<Duration> setAsset(String assetPath) =>
       load(AudioSource.uri(Uri.parse('asset:///$assetPath')));
 
-  /// Loads audio from an [AudioSource] and completes when the audio is ready
+  /// Loads audio from an [AudioSource] and completes when the audio is ready to
-  /// to play with the duration of that audio, or null if the duration is unknown.
+  /// play with the duration of that audio, or null if the duration is unknown.
+  /// Optionally specify [initialPosition] and [initialIndex] to seek to an
+  /// initial position within a particular item (defaulting to position zero of
+  /// the first item).
   ///
   /// This method throws:
   ///
   /// * [PlayerException] if the audio source was unable to be loaded.
   /// * [PlayerInterruptedException] if another call to [load] happened before
   /// this call completed.
-  Future<Duration> load(AudioSource source) async {
+  Future<Duration> load(AudioSource source,
+      {Duration initialPosition, int initialIndex}) async {
     if (_disposed) return null;
     try {
       _audioSource = source;
       _broadcastSequence();
-      final duration = await _load(source);
+      final duration = await _load(source,
+          initialPosition: initialPosition, initialIndex: initialIndex);
       // Wait for loading state to pass.
       await processingStateStream
           .firstWhere((state) => state != ProcessingState.loading);
@@ -474,7 +479,8 @@ class AudioPlayer {
     _audioSources[source._id] = source;
   }
 
-  Future<Duration> _load(AudioSource source) async {
+  Future<Duration> _load(AudioSource source,
+      {Duration initialPosition, int initialIndex}) async {
     try {
       if (!kIsWeb && source._requiresHeaders) {
         if (_proxy == null) {
@@ -484,7 +490,11 @@ class AudioPlayer {
       }
       await source._setup(this);
       _durationFuture = (await _platform)
-          .load(LoadRequest(audioSourceMessage: source._toMessage()))
+          .load(LoadRequest(
+            audioSourceMessage: source._toMessage(),
+            initialPosition: initialPosition,
+            initialIndex: initialIndex,
+          ))
           .then((response) => response.duration);
       final duration = await _durationFuture;
       _durationSubject.add(duration);

just_audio/pubspec.lock

@@ -110,10 +110,17 @@ packages:
   just_audio_platform_interface:
     dependency: "direct main"
     description:
-      name: just_audio_platform_interface
+      path: "../just_audio_platform_interface"
-      url: "https://pub.dartlang.org"
+      relative: true
-    source: hosted
+    source: path
     version: "1.1.0"
+  just_audio_web:
+    dependency: "direct main"
+    description:
+      path: "../just_audio_web"
+      relative: true
+    source: path
+    version: "0.1.0"
   matcher:
     dependency: transitive
     description:

just_audio/pubspec.yaml

@@ -8,8 +8,12 @@ environment:
   flutter: ">=1.12.13+hotfix.5"
 
 dependencies:
-  just_audio_platform_interface: ^1.1.0
+  # just_audio_platform_interface: ^1.2.0
-  just_audio_web: ^0.1.0
+  # just_audio_web: ^0.1.0
+  just_audio_platform_interface:
+    path: ../just_audio_platform_interface
+  just_audio_web:
+    path: ../just_audio_web
   audio_session: ^0.0.9
   rxdart: ^0.24.1
   path: ^1.6.4

just_audio_platform_interface/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.2.0
+
+- Add initialPosition and initialIndex to LoadRequest.
+
 ## 1.1.0
 
 - Player is now disposed via JustAudioPlatform.disposePlayer().

just_audio_platform_interface/lib/just_audio_platform_interface.dart

@@ -297,11 +297,19 @@ class DisposePlayerResponse {
 /// audio source.
 class LoadRequest {
   final AudioSourceMessage audioSourceMessage;
+  final Duration initialPosition;
+  final int initialIndex;
 
-  LoadRequest({@required this.audioSourceMessage});
+  LoadRequest({
+    @required this.audioSourceMessage,
+    this.initialPosition,
+    this.initialIndex,
+  });
 
   Map<dynamic, dynamic> toMap() => {
         'audioSource': audioSourceMessage.toMap(),
+        'initialPosition': initialPosition?.inMicroseconds,
+        'initialIndex': initialIndex,
       };
 }
 

just_audio_platform_interface/pubspec.yaml

@@ -3,7 +3,7 @@ description: A common platform interface for the just_audio plugin.
 homepage: https://github.com/ryanheise/just_audio/tree/master/just_audio_platform_interface
 # NOTE: We strongly prefer non-breaking changes, even at the expense of a
 # less-clean API. See https://flutter.dev/go/platform-interface-breaking-changes
-version: 1.1.0
+version: 1.2.0
 
 dependencies:
   flutter:

just_audio_web/pubspec.yaml

@@ -11,7 +11,9 @@ flutter:
         fileName: just_audio_web.dart
 
 dependencies:
-  just_audio_platform_interface: ^1.1.0
+  # just_audio_platform_interface: ^1.2.0
+  just_audio_platform_interface:
+    path: ../just_audio_platform_interface
   flutter:
     sdk: flutter
   flutter_web_plugins: