update dependencies and fix null error

.github/workflows/main.yml

@@ -1,22 +1,25 @@
 name: CI
 
 on:
-  push
+  # manual workflow trigger
+  workflow_dispatch:
+  # matches every branch
+  push:
+    branches: "**"
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v2
 
       - uses: actions/setup-java@v1
         with:
-          java-version: '12.x'
+          java-version: "12.x"
       - uses: subosito/flutter-action@v1
         with:
-          channel: 'master'
+          channel: "master"
 
       - run: flutter config --enable-linux-desktop
 
@@ -50,4 +53,3 @@ jobs:
 
       - name: Build APP
         run: flutter build linux
-

lib/media/tracks/tracks_player_impl_mobile.dart

@@ -230,7 +230,7 @@ Future<Uint8List> _loadImageInterceptor(MusicMetadata metadata) async {
   final ImageStream stream =
       CachedImage(metadata.iconUri.toString()).resolve(ImageConfiguration(
     size: const Size(150, 150),
-    devicePixelRatio: WidgetsBinding.instance.window.devicePixelRatio,
+    devicePixelRatio: WidgetsBinding.instance?.window.devicePixelRatio,
   ));
   final image = Completer<ImageInfo>();
   stream.addListener(ImageStreamListener((info, a) {

lib/navigation/common/player/lyric.dart

@@ -91,7 +91,7 @@ class LyricState extends State<Lyric> with TickerProviderStateMixin {
   /// scroll lyric to current playing position
   void _scrollToCurrentPosition(int? milliseconds, {bool animate = true}) {
     if (lyricPainter!.height == -1) {
-      WidgetsBinding.instance.addPostFrameCallback((d) {
+      WidgetsBinding.instance?.addPostFrameCallback((d) {
 //        debugPrint("try to init scroll to position ${widget.position.value},"
 //            "but lyricPainter is unavaiable, so scroll(without animate) on next frame $d");
         //TODO maybe cause bad performance
@@ -267,7 +267,7 @@ class _ScrollerListenerState extends State<_ScrollerListener> {
   void _receivedPointerSignal(PointerSignalEvent event) {
     if (event is PointerScrollEvent) {
       if (_pointerSignalEventDelta(event) != 0.0) {
-        GestureBinding.instance.pointerSignalResolver
+        GestureBinding.instance!.pointerSignalResolver
             .register(event, _handlePointerScroll);
       }
     }

lib/navigation/desktop/widgets/windows_task_bar.dart

@@ -33,7 +33,7 @@ class _WindowsTaskBar extends ConsumerWidget {
   Widget build(BuildContext context, WidgetRef ref) {
     ref.listen<TracksPlayerState>(playerStateProvider, (previous, next) {
       if (next.playingTrack == null) {
-        WindowsTaskbar.clearThumbnailToolbar();
+        WindowsTaskbar.resetThumbnailToolbar();
       } else {
         WindowsTaskbar.setThumbnailToolbar([
           ThumbnailToolbarButton(

lib/navigation/mobile/home/main_page_my.dart

@@ -150,7 +150,7 @@ class _MainPageMyState extends ConsumerState<MainPageMy>
           curve: Curves.linear,
         )
             .then((_) {
-          WidgetsBinding.instance.scheduleFrameCallback((timeStamp) {
+          WidgetsBinding.instance?.scheduleFrameCallback((timeStamp) {
             _scrollToPlayList(type);
           });
         });
@@ -162,7 +162,7 @@ class _MainPageMyState extends ConsumerState<MainPageMy>
           curve: Curves.linear,
         )
             .then((_) {
-          WidgetsBinding.instance.scheduleFrameCallback((timeStamp) {
+          WidgetsBinding.instance?.scheduleFrameCallback((timeStamp) {
             _scrollToPlayList(type);
           });
         });

lib/navigation/mobile/player/page_playing.dart

@@ -18,7 +18,7 @@ class PlayingPage extends ConsumerWidget {
   Widget build(BuildContext context, WidgetRef ref) {
     final current = ref.read(playerStateProvider).playingTrack;
     if (current == null) {
-      WidgetsBinding.instance.scheduleFrameCallback((_) {
+      WidgetsBinding.instance?.scheduleFrameCallback((_) {
         Navigator.of(context).pop();
       });
       return Container();