feat: 添加动态标题更新功能至广告详情页

lib/pages/ad_detail/view.dart

@@ -9,10 +9,21 @@ class AdDetailPage extends StatefulWidget {
 }
 
 class _AdDetailPageState extends State<AdDetailPage> {
+  String _pageTitle = '团书馆';
+
+  void _updateTitle(String? title) {
+    final value = title?.trim() ?? '';
+    if (value.isNotEmpty && value != _pageTitle && mounted) {
+      setState(() {
+        _pageTitle = value;
+      });
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-        appBar: AppBar(),
+        appBar: AppBar(title: Text(_pageTitle)),
         body: InAppWebView(
           initialUrlRequest:
               URLRequest(url: WebUri.uri(Uri.parse(widget.adModel.url ?? ''))
@@ -21,6 +32,12 @@ class _AdDetailPageState extends State<AdDetailPage> {
           initialSettings: InAppWebViewSettings(
               // http的请求也不做限制
               mixedContentMode: MixedContentMode.MIXED_CONTENT_ALWAYS_ALLOW),
+          onLoadStop: (controller, url) async {
+            _updateTitle(await controller.getTitle());
+          },
+          onTitleChanged: (controller, title) {
+            _updateTitle(title);
+          },
         ));
   }
 }