解决项目在idea-dart-analysis会出现大量错误的问题

analysis_options.yaml

@@ -0,0 +1,6 @@
+analyzer:
+  strong-mode:
+    implicit-casts: true
+    implicit-dynamic: true
+  errors:
+    mixin_inherits_from_not_object: ignore

lib/test/DemoMixins.dart

@@ -17,7 +17,7 @@ abstract class Base {
   }
 }
 
-class A extends Base {
+mixin A on Base {
   a() {
     print("A.a()");
     //super.a();
@@ -29,7 +29,7 @@ class A extends Base {
   }
 }
 
-class A2 extends Base {
+mixin A2 on Base {
   a() {
     print("A2.a()");
     super.a();

lib/widget/webview/WebView.dart

@@ -59,7 +59,7 @@ class WebView extends StatefulWidget {
 
 class _WebViewState extends State<WebView> {
   final Completer<WebViewController> _controller =
-  Completer<WebViewController>();
+      Completer<WebViewController>();
 
   _WebSettings _settings;
 
@@ -76,7 +76,9 @@ class _WebViewState extends State<WebView> {
         child: AndroidView(
           viewType: 'plugins.flutter.io/webview',
           onPlatformViewCreated: _onPlatformViewCreated,
-          gestureRecognizers: widget.gestureRecognizers,
+          gestureRecognizers: widget.gestureRecognizers.map((e) {
+            return Factory<OneSequenceGestureRecognizer>(() => e);
+          }).toSet(),
           // WebView content is not affected by the Android view's layout direction,
           // we explicitly set it here so that the widget doesn't require an ambient
           // directionality.
@@ -101,7 +103,7 @@ class _WebViewState extends State<WebView> {
     super.didUpdateWidget(oldWidget);
     final _WebSettings newSettings = _WebSettings.fromWidget(widget);
     final Map<String, dynamic> settingsUpdate =
-    _settings.updatesMap(newSettings);
+        _settings.updatesMap(newSettings);
     _updateSettings(settingsUpdate);
     _settings = newSettings;
   }
@@ -207,4 +209,4 @@ void _validateUrlString(String url) {
   } on FormatException catch (e) {
     throw ArgumentError(e);
   }
-}
+}