fix flutter analyzer. (#510)

Author: cloudwebrtc

example/lib/main.dart

@@ -18,7 +18,7 @@ void main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
   if (lkPlatformIsDesktop()) {
-    FlutterWindowClose.setWindowShouldCloseHandler(() async {
+    await FlutterWindowClose.setWindowShouldCloseHandler(() async {
       await onWindowShouldClose?.call();
       return true;
     });
@@ -30,8 +30,8 @@ void main() async {
 class LiveKitExampleApp extends StatelessWidget {
   //
   const LiveKitExampleApp({
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) => MaterialApp(

example/lib/pages/connect.dart

@@ -11,8 +11,8 @@ import '../exts.dart';
 class ConnectPage extends StatefulWidget {
   //
   const ConnectPage({
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<StatefulWidget> createState() => _ConnectPageState();

example/lib/pages/prejoin.dart

@@ -36,8 +36,8 @@ class JoinArgs {
 class PreJoinPage extends StatefulWidget {
   const PreJoinPage({
     required this.args,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
   final JoinArgs args;
   @override
   State<StatefulWidget> createState() => _PreJoinPageState();

example/lib/pages/room.dart

@@ -19,8 +19,8 @@ class RoomPage extends StatefulWidget {
   const RoomPage(
     this.room,
     this.listener, {
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<StatefulWidget> createState() => _RoomPageState();

example/lib/widgets/controls.dart

@@ -18,8 +18,8 @@ class ControlsWidget extends StatefulWidget {
   const ControlsWidget(
     this.room,
     this.participant, {
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<StatefulWidget> createState() => _ControlsWidgetState();
@@ -340,7 +340,7 @@ class _ControlsWidgetState extends State<ControlsWidget> {
                           ),
                           onTap: () => _selectAudioInput(device),
                         );
-                      }).toList()
+                      })
                   ];
                 },
               )
@@ -384,7 +384,7 @@ class _ControlsWidgetState extends State<ControlsWidget> {
                         ),
                         onTap: () => _selectAudioOutput(device),
                       );
-                    }).toList()
+                    })
                 ];
               },
             ),
@@ -433,7 +433,7 @@ class _ControlsWidgetState extends State<ControlsWidget> {
                         ),
                         onTap: () => _selectVideoInput(device),
                       );
-                    }).toList()
+                    })
                 ];
               },
             )

example/lib/widgets/no_video.dart

@@ -5,7 +5,7 @@ import 'package:livekit_example/theme.dart';
 
 class NoVideoWidget extends StatelessWidget {
   //
-  const NoVideoWidget({Key? key}) : super(key: key);
+  const NoVideoWidget({super.key});
 
   @override
   Widget build(BuildContext context) => Container(

example/lib/widgets/participant.dart

@@ -37,8 +37,8 @@ abstract class ParticipantWidget extends StatefulWidget {
 
   const ParticipantWidget({
     this.quality = VideoQuality.MEDIUM,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 }
 
 class LocalParticipantWidget extends ParticipantWidget {
@@ -56,8 +56,8 @@ class LocalParticipantWidget extends ParticipantWidget {
     this.videoTrack,
     this.isScreenShare,
     this.showStatsLayer, {
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<StatefulWidget> createState() => _LocalParticipantWidgetState();
@@ -78,8 +78,8 @@ class RemoteParticipantWidget extends ParticipantWidget {
     this.videoTrack,
     this.isScreenShare,
     this.showStatsLayer, {
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<StatefulWidget> createState() => _RemoteParticipantWidgetState();
@@ -249,8 +249,8 @@ class RemoteTrackPublicationMenuWidget extends StatelessWidget {
   const RemoteTrackPublicationMenuWidget({
     required this.pub,
     required this.icon,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) => Material(
@@ -287,8 +287,8 @@ class RemoteTrackFPSMenuWidget extends StatelessWidget {
   const RemoteTrackFPSMenuWidget({
     required this.pub,
     required this.icon,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) => Material(
@@ -321,8 +321,8 @@ class RemoteTrackQualityMenuWidget extends StatelessWidget {
   const RemoteTrackQualityMenuWidget({
     required this.pub,
     required this.icon,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) => Material(

example/lib/widgets/participant_info.dart

@@ -25,8 +25,8 @@ class ParticipantInfoWidget extends StatelessWidget {
     this.connectionQuality = ConnectionQuality.unknown,
     this.isScreenShare = false,
     this.enabledE2EE = false,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) => Container(

example/lib/widgets/participant_stats.dart

@@ -10,8 +10,7 @@ enum StatsType {
 }
 
 class ParticipantStatsWidget extends StatefulWidget {
-  const ParticipantStatsWidget({Key? key, required this.participant})
-      : super(key: key);
+  const ParticipantStatsWidget({super.key, required this.participant});
   final Participant participant;
   @override
   State<StatefulWidget> createState() => _ParticipantStatsWidgetState();

example/lib/widgets/text_field.dart

@@ -6,8 +6,8 @@ class LKTextField extends StatelessWidget {
   const LKTextField({
     required this.label,
     this.ctrl,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) => Column(