Fix warnings (#1367)

* fix warnings

* fixed warnings example project

Author: TimHoogstrate

permission_handler_html/example/lib/main.dart

@@ -17,14 +17,19 @@ final MaterialColor themeMaterialColor =
 
 /// A Flutter application demonstrating the functionality of this plugin
 class PermissionHandlerWidget extends StatefulWidget {
+  /// Creates a [PermissionHandlerWidget].
+  const PermissionHandlerWidget({
+    super.key,
+  });
+
   /// Create a page containing the functionality of this plugin
   static ExamplePage createPage() {
     return ExamplePage(
-        Icons.location_on, (context) => PermissionHandlerWidget());
+        Icons.location_on, (context) => const PermissionHandlerWidget());
   }
 
   @override
-  _PermissionHandlerWidgetState createState() =>
+  State<PermissionHandlerWidget> createState() =>
       _PermissionHandlerWidgetState();
 }
 
@@ -52,18 +57,20 @@ class _PermissionHandlerWidgetState extends State<PermissionHandlerWidget> {
 /// Permission widget containing information about the passed [Permission]
 class PermissionWidget extends StatefulWidget {
   /// Constructs a [PermissionWidget] for the supplied [Permission]
-  const PermissionWidget(this._permission);
+  const PermissionWidget(
+    this._permission, {
+    super.key,
+  });
 
   final Permission _permission;
 
   @override
-  _PermissionState createState() => _PermissionState(_permission);
+  State<PermissionWidget> createState() => _PermissionState();
 }
 
 class _PermissionState extends State<PermissionWidget> {
-  _PermissionState(this._permission);
+  _PermissionState();
 
-  final Permission _permission;
   final PermissionHandlerPlatform _permissionHandler =
       PermissionHandlerPlatform.instance;
   PermissionStatus _permissionStatus = PermissionStatus.denied;
@@ -76,9 +83,9 @@ class _PermissionState extends State<PermissionWidget> {
   }
 
   void _listenForPermissionStatus() async {
-    await _permissionHandler.checkPermissionStatus(_permission).then(
+    await _permissionHandler.checkPermissionStatus(widget._permission).then(
         (status) => setState(() => _permissionStatus = status),
-        onError: (error, st) => print('$error'));
+        onError: (error, st) => debugPrint('$error'));
   }
 
   Color getPermissionColor() {
@@ -98,26 +105,26 @@ class _PermissionState extends State<PermissionWidget> {
   Widget build(BuildContext context) {
     return ListTile(
       title: Text(
-        _permission.toString(),
+        widget._permission.toString(),
         style: Theme.of(context).textTheme.bodyLarge,
       ),
       subtitle: Text(
         _permissionStatus.toString(),
         style: TextStyle(color: getPermissionColor()),
       ),
-      trailing: (_permission is PermissionWithService)
+      trailing: (widget._permission is PermissionWithService)
           ? IconButton(
               icon: const Icon(
                 Icons.info,
                 color: Colors.white,
               ),
               onPressed: () {
                 checkServiceStatus(
-                    context, _permission as PermissionWithService);
+                    context, widget._permission as PermissionWithService);
               })
           : null,
       onTap: () {
-        requestPermission(_permission);
+        requestPermission(widget._permission);
       },
     );
   }
@@ -133,10 +140,8 @@ class _PermissionState extends State<PermissionWidget> {
   Future<void> requestPermission(Permission permission) async {
     await _permissionHandler.requestPermissions([permission]).then(
         (status) => setState(() {
-              print(status);
               _permissionStatus = status[permission] ?? PermissionStatus.denied;
-              print(_permissionStatus);
             }),
-        onError: (error, st) => print('$error'));
+        onError: (error, st) => debugPrint('$error'));
   }
 }

permission_handler_html/example/pubspec.yaml

@@ -5,6 +5,7 @@ environment:
   sdk: ">=3.0.5 <4.0.0"
 
 dependencies:
+  permission_handler_platform_interface: ^4.2.0
   baseflow_plugin_template: ^2.1.2
   flutter:
     sdk: flutter

permission_handler_html/lib/web_delegate.dart

@@ -75,7 +75,7 @@ class WebDelegate {
 
     try {
       web.MediaStream? mediaStream = await _devices
-          ?.getUserMedia(web.MediaStreamConstraints(audio: true.toJS))
+          .getUserMedia(web.MediaStreamConstraints(audio: true.toJS))
           .toDart;
 
       // In browsers, calling [getUserMedia] will start the recording
@@ -85,8 +85,8 @@ class WebDelegate {
       // The manual stop action is then needed here for to stop the automatic
       // recording.
 
-      if (mediaStream?.active ?? false) {
-        final audioTracks = mediaStream?.getAudioTracks().toDart ?? [];
+      if (mediaStream.active) {
+        final audioTracks = mediaStream.getAudioTracks().toDart;
         if (audioTracks.isNotEmpty) {
           audioTracks[0].stop();
         }
@@ -105,7 +105,7 @@ class WebDelegate {
 
     try {
       web.MediaStream? mediaStream = await _devices
-          ?.getUserMedia(web.MediaStreamConstraints(video: true.toJS))
+          .getUserMedia(web.MediaStreamConstraints(video: true.toJS))
           .toDart;
 
       // In browsers, calling [getUserMedia] will start the recording
@@ -115,8 +115,8 @@ class WebDelegate {
       // The manual stop action is then needed here for to stop the automatic
       // recording.
 
-      if (mediaStream?.active ?? false) {
-        final videoTracks = mediaStream?.getVideoTracks().toDart ?? [];
+      if (mediaStream.active) {
+        final videoTracks = mediaStream.getVideoTracks().toDart;
         if (videoTracks.isNotEmpty) {
           videoTracks[0].stop();
         }