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添加 HTML 资源路径到 pubspec.yaml；更新 Auth 页面以使用新的 Webview 组件加载本地 HTML 文件；重构 WebviewPage 以支持加载本地资产和注入 JavaScript 通信桥接；清理不必要的导入和注释。

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This commit is contained in:
linfeng
2026-07-08 12:03:25 +08:00
parent b21857f364
commit bd5937f910
6 changed files with 172 additions and 32 deletions
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lib/shared/widgets/app_webview.dart
+100 -28
View File
@@ -5,16 +5,19 @@ import 'package:webview_flutter_android/webview_flutter_android.dart';
import 'package:webview_flutter_wkwebview/webview_flutter_wkwebview.dart';
class WebviewPage extends StatefulWidget {
final String url;
final String? url;
final String? title;
final String? assetPath;
const WebviewPage({super.key, required this.url, this.title});
const WebviewPage({super.key, this.url, this.title, this.assetPath});
@override
State<WebviewPage> createState() => WebviewPageState();
}
class WebviewPageState extends State<WebviewPage> {
static const String _javaScriptChannelName = 'AppBridge';
WebViewController? _controller;
bool _isLoading = true;
String? _errorMessage;
@@ -26,11 +29,12 @@ class WebviewPageState extends State<WebviewPage> {
}
Future<void> _initController() async {
if (widget.url?.isEmpty ?? true) {
if ((widget.url?.isEmpty ?? true) && widget.assetPath == null) {
return;
}
final params = _createPlatformParams();
final controller = WebViewController.fromPlatformCreationParams(params)
late final WebViewController controller;
controller = WebViewController.fromPlatformCreationParams(params)
..setJavaScriptMode(JavaScriptMode.unrestricted)
..setBackgroundColor(Colors.transparent)
..setNavigationDelegate(
@@ -46,8 +50,9 @@ class WebviewPageState extends State<WebviewPage> {
_errorMessage = null;
});
},
onPageFinished: (String url) {
onPageFinished: (String url) async {
debugPrint('webview - page finished: $url');
await _injectPostMessageBridge(controller);
if (!mounted) return;
setState(() => _isLoading = false);
},
@@ -72,17 +77,28 @@ class WebviewPageState extends State<WebviewPage> {
),
);
controller.addJavaScriptChannel(
_javaScriptChannelName,
onMessageReceived: (JavaScriptMessage message) {
_onMessageReceived(message);
},
);
if (controller.platform is AndroidWebViewController) {
AndroidWebViewController.enableDebugging(kDebugMode);
await (controller.platform as AndroidWebViewController)
.setMediaPlaybackRequiresUserGesture(false);
}
final targetUrl = widget.url ?? '';
try {
await controller.loadRequest(Uri.parse(targetUrl));
if (widget.assetPath != null) {
await controller.loadFlutterAsset(widget.assetPath!);
} else {
final targetUrl = widget.url ?? '';
await controller.loadRequest(Uri.parse(targetUrl));
}
} catch (e) {
debugPrint('webview - loadRequest failed: $e');
debugPrint('webview - load failed: $e');
if (!mounted) return;
setState(() {
_isLoading = false;
@@ -95,6 +111,81 @@ class WebviewPageState extends State<WebviewPage> {
setState(() => _controller = controller);
}
void _onMessageReceived(JavaScriptMessage message) {
debugPrint('收到来自 WebView 的消息: ${message.message}');
}
/// 脚本注入传输给h5 数据
Future<void> _injectH5NeedData(WebViewController controller) async {
try {
await controller.runJavaScript('''
(function () {
if (window.__appBridgePostMessageBridgeInstalled) {
return;
}
window.__appBridgePostMessageBridgeInstalled = true;
window.addEventListener('message', function (event) {
if (!window.AppBridge || !window.AppBridge.postMessage) {
return;
}
var payload = event.data;
if (typeof payload !== 'string') {
try {
payload = JSON.stringify(payload);
if (typeof payload === 'undefined') {
payload = String(event.data);
}
} catch (error) {
payload = String(payload);
}
}
window.AppBridge.postMessage(payload);
});
})();
''');
} catch (e) {
debugPrint('webview - inject postMessage bridge failed: $e');
}
}
Future<void> _injectPostMessageBridge(WebViewController controller) async {
// try {
// await controller.runJavaScript('''
// (function () {
// if (window.__appBridgePostMessageBridgeInstalled) {
// return;
// }
// window.__appBridgePostMessageBridgeInstalled = true;
// window.addEventListener('message', function (event) {
// if (!window.AppBridge || !window.AppBridge.postMessage) {
// return;
// }
// var payload = event.data;
// if (typeof payload !== 'string') {
// try {
// payload = JSON.stringify(payload);
// if (typeof payload === 'undefined') {
// payload = String(event.data);
// }
// } catch (error) {
// payload = String(payload);
// }
// }
// window.AppBridge.postMessage(payload);
// });
// })();
// ''');
// } catch (e) {
// debugPrint('webview - inject postMessage bridge failed: $e');
// }
}
PlatformWebViewControllerCreationParams _createPlatformParams() {
if (WebViewPlatform.instance is WebKitWebViewPlatform) {
return WebKitWebViewControllerCreationParams(
@@ -110,27 +201,8 @@ class WebviewPageState extends State<WebviewPage> {
return Scaffold(
backgroundColor: Colors.transparent,
extendBodyBehindAppBar: true,
appBar: AppBar(
backgroundColor: Colors.transparent,
elevation: 0,
title: Text(
widget.title ?? '',
style: const TextStyle(color: Colors.white),
),
leading: IconButton(
icon: const Icon(Icons.arrow_back, color: Colors.white),
onPressed: () async {
final controller = _controller;
if (controller != null && await controller.canGoBack()) {
await controller.goBack();
} else {
if (context.mounted) Navigator.of(context).maybePop();
}
},
),
iconTheme: const IconThemeData(color: Colors.white),
),
// appBar: myAppBar(context: context),
body: _buildBody(),
);
}