Flutter webview 交互

WebView(
initialUrl: url,
javascriptMode: JavascriptMode.unrestricted,
javascriptChannels: {
JavascriptChannel(
name: "AppNotifyInitSuccess", //JS调用AppNotifyInitSuccess.
onMessageReceived: (JavascriptMessage message) {
_jsCallBackJson = message.message;
showAppToast("获取JS回传数据: ${message.message}");
}),
},
onWebViewCreated: (WebViewController controller) {
_webViewController = controller;
},
),

//Flutter 主动和WebView通信.
_webViewController.evaluateJavascript("updateAppDataInfo('Flutter通过JS修改')");