modified: lib/class/audiostate.dart

modified:   lib/episodes/episodedetail.dart
	modified:   lib/main.dart

lib/class/audiostate.dart

@@ -97,6 +97,12 @@ class AudioPlayer extends ChangeNotifier {
   AudioState get audioState => _audioState;
 
   EpisodeBrief get episode => _episode;
+  
+  @override
+  void addListener(VoidCallback listener) {
+    super.addListener(listener);
+    _queue.getPlaylist();
+  }
 
   episodeLoad(EpisodeBrief episode) async {
     AudioSystem.instance.addMediaEventListener(_mediaEventListener);
@@ -409,8 +415,8 @@ class AudioPlayer extends ChangeNotifier {
   }
 
   void _stopBackgroundAudio() {
-    _backgroundAudio..pause();
-    _backgroundAudio..dispose();
+    _backgroundAudio?.pause();
+    _backgroundAudio?.dispose();
     _backgroundAudioPlaying = false;
     AudioSystem.instance.stopBackgroundDisplay();
   }

lib/episodes/episodedetail.dart

@@ -275,7 +275,7 @@ class _MenuBarState extends State<MenuBar> {
           Hero(
             tag: widget.episodeItem.enclosureUrl + widget.heroTag,
             child: Container(
-              padding: EdgeInsets.symmetric(horizontal:10.0),
+              padding: EdgeInsets.symmetric(horizontal: 10.0),
               child: ClipRRect(
                 borderRadius: BorderRadius.all(Radius.circular(15.0)),
                 child: Container(
@@ -314,13 +314,24 @@ class _MenuBarState extends State<MenuBar> {
                       ],
                     ),
           DownloadButton(episodeBrief: widget.episodeItem),
-          _buttonOnMenu(Icon(Icons.playlist_add, color: Colors.grey[700]), () {
-            Fluttertoast.showToast(
-              msg: 'Added to playlist',
-              gravity: ToastGravity.BOTTOM,
-            );
-            audio.addToPlaylist(widget.episodeItem);
-          }),
+          Selector<AudioPlayer, List<String>>(
+            selector: (_, audio) => audio.queue.playlist.map((e)=>e.enclosureUrl).toList(),
+            builder: (_, data, __) {
+              print(data.length);
+              return data.contains(widget.episodeItem.enclosureUrl)
+                  ? _buttonOnMenu(
+                      Icon(Icons.playlist_add_check, color: Theme.of(context).accentColor),
+                      (){})
+                  : _buttonOnMenu(
+                      Icon(Icons.playlist_add, color: Colors.grey[700]), () {
+                      Fluttertoast.showToast(
+                        msg: 'Added to playlist',
+                        gravity: ToastGravity.BOTTOM,
+                      );
+                      audio.addToPlaylist(widget.episodeItem);
+                    });
+            },
+          ),
           Spacer(),
           // Text(audio.audioState.toString()),
           Selector<AudioPlayer, Tuple2<EpisodeBrief, bool>>(

lib/main.dart

@@ -31,9 +31,7 @@ class MyApp extends StatelessWidget {
     var theme = Provider.of<SettingState>(context).theme;
     print(theme);
     return MaterialApp(
-      themeMode: theme == 0
-          ? ThemeMode.system
-          : theme == 1 ? ThemeMode.light: ThemeMode.dark,
+      themeMode: ThemeMode.system,
       debugShowCheckedModeBanner: false,
       title: 'TsacDop',
       theme: ThemeData(