1、js互调方法finishPage(关闭页面)；

lib/widget/complaint_web_view.dart

@@ -62,6 +62,12 @@ class _ComplaintWebPageState extends State<ComplaintWebPage> {
     // #enddocregion platform_features
     controller
       ..setJavaScriptMode(JavaScriptMode.unrestricted)
+      ..addJavaScriptChannel("finishPage",
+          onMessageReceived: (JavaScriptMessage message) async {
+            debugPrint(
+                "JavascriptChannel:method = finishPage message = ${message.message}");
+            finishPage(message.message);
+          })
       ..setNavigationDelegate(
           NavigationDelegate(onPageFinished: _onPageFinished))
       ..loadRequest(Uri.parse(widget.url ?? ""));
@@ -162,4 +168,10 @@ class _ComplaintWebPageState extends State<ComplaintWebPage> {
     debugPrint("web onPageFinished：title = $_title url = ${widget.url}");
     setState(() {});
   }
+
+  /// 关闭页面
+  finishPage(String? msg) {
+    debugPrint("finishPage：");
+    Navigator.pop(context);
+  }
 }