In Android I can add javascript interface:
class JsInterface(private val onClose: () -> Unit) {
@android.webkit.JavascriptInterface
fun close() {
onClose()
}
}
...
addJavascriptInterface(JsInterface { this@WebViewActivity.finish() }, "client")
How can I do the same in Flutter WebView or InAppWebView or other packages?
I suggest you to read this article, where they take a closer look at flutter_inappwebview. But try this code example for quick answer:
InAppWebView(
initialUrl: 'url',
onWebViewCreated: (controller) =>
control.webController = controller
..addJavaScriptHandler(
handlerName: 'serverSideJsFuncName',
callback: (data) {
// Catch and handle js function
},
),
)
On the other hand, if you want to update server side JavaScript you can do it via InAppWebViewController like this:
Future<void> evalJs(dynamic param) async {
await webController.evaluateJavascript(
source: "window.someFuncName( '$param ');");
}