这个库不再维护了，因为跟webview耦合度太高了，把jsbridge内容分离出来重写了一个plugin
A Flutter plugin that provides a JsBridge on WebView widget.
On iOS the WebView widget is backed by a WKWebView; On Android the WebView widget is backed by a WebView.
This plugin based on the webview_flutter
To use this plugin on iOS you need to opt-in for the embedded views preview by adding a boolean property to the app's Info.plist file, with the key io.flutter.embedded_views_preview and the value YES.
Keyboard support within webviews is experimental. The Android version relies on some low-level knobs that have not been well tested on a broad spectrum of devices yet, and therefore it is not recommended to rely on webview keyboard in production apps yet. See the webview-keyboard for known issues with keyboard input.
Opt-in to the embedded views preview by adding a boolean property to the app's Info.plist file with the key io.flutter.embedded_views_preview and the value YES.
Add bridge_webview_flutter as a dependency in your pubspec.yaml file.
BridgeWebView( initialUrl: 'https://flutter.dev', javascriptMode: JavascriptMode.unrestricted, onWebViewCreated: (WebViewController webViewController) { _controller.complete(webViewController); webViewController.registerHandler("methodName", response: "r1", onCallBack: (callBackData) { print(callBackData.name); // handler name print(callBackData.data); // callback data ({'param': '1'}) }); webViewController.callHandler("methodName", data: "sendData", onCallBack: (callBackData) { print(callBackData.name); // handler name print(callBackData.data); // callback data (r2) }); }, onPageStarted: (String url) { print('Page started loading: $url'); }, onPageFinished: (String url) { print('Page finished loading: $url'); } ) onWebViewCreated: (WebViewController webViewController) { _controller.complete(webViewController); webViewController.registerHandler("methodName", response: "r1", onCallBack: (callBackData) { print(callBackData.name); // handler name print(callBackData.data); // callback data ({'param': '1'}) }); } WebViewJavascriptBridge.callHandler( 'methodName' , {'param': '1'} , function(data) { // data is r1 } ); WebViewJavascriptBridge.registerHandler("methodName", function(data, responseCallback) { // data is 'sendData' responseCallback('r2'); }); onWebViewCreated: (WebViewController webViewController) { _controller.complete(webViewController); webViewController.callHandler("methodName", data: "sendData", onCallBack: (callBackData) { print(callBackData.name); // handler name print(callBackData.data); // callback data (r2) }); }