React Native WebView onMessage doesn't do anything

Question

I\'m trying to use the onMessage listener. The website is executing a postMessage (window.postMessage(\"Post message from web\");) but react native\'s webview o

Answer 1

This solved my problem.

let postMessage = window.parent.postMessage;
if(window.ReactNativeWebView) {
    postMessage = window.ReactNativeWebView.postMessage;
}
postMessage('hey');

https://github.com/react-native-community/react-native-webview/issues/323#issuecomment-511824940