bug fixes for android auto

lib/main.dart

@@ -13,13 +13,16 @@ import 'streaming_audio_business_object.dart';
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   tz.initializeTimeZones();
-  unawaited(StreamingAudioBusinessObject.initializeBackgroundAudio());
-  await SystemChrome.setPreferredOrientations([
-    DeviceOrientation.portraitUp,
-    DeviceOrientation.portraitDown,
-  ]);
-
   runApp(const MyApp());
+
+  // Keep startup non-blocking so UI can render even if background media
+  // services are initializing after an Android Auto cold start.
+  unawaited(
+    SystemChrome.setPreferredOrientations([
+      DeviceOrientation.portraitUp,
+      DeviceOrientation.portraitDown,
+    ]),
+  );
 }
 
 class MyApp extends StatefulWidget {
@@ -36,6 +39,7 @@ class _MyAppState extends State<MyApp> {
   @override
   void initState() {
     super.initState();
+    unawaited(_audio.ensureInitialized());
     _casting.initialize();
   }
 

lib/streaming_audio_business_object.dart

@@ -10,10 +10,6 @@ enum StreamingPlaybackStatus { stopped, buffering, playing }
 
 class StreamingAudioBusinessObject extends ChangeNotifier {
   StreamingAudioBusinessObject() {
-    if (_audioHandler == null && _audioHandlerInitFuture == null) {
-      initializeBackgroundAudio();
-    }
-
     final initFuture = _audioHandlerInitFuture;
     if (initFuture != null) {
       initFuture.then((handler) {
@@ -74,6 +70,10 @@ class StreamingAudioBusinessObject extends ChangeNotifier {
   String get currentTitle => _currentTitle;
   String get currentSubtitle => _currentSubtitle;
 
+  Future<void> ensureInitialized() async {
+    await initializeBackgroundAudio();
+  }
+
   StreamingPlaybackStatus _mapPlaybackStateToStatus(PlaybackState state) {
     if (state.processingState == AudioProcessingState.completed) {
       return StreamingPlaybackStatus.stopped;