Showing the code for bidirectional messaging between Flutter and a hosting web app

A demonstration with code snippets of bidirectional communication between Flutter and HTML/Javascript in a web app.
The sample flutter counter app is embedded in a web page. Demonstrates messaging Flutter to the web app via window messages whenever the counter increments.
Demonstrates messaging from the web app to Flutter whenever a button is pressed on the HTML page. An "increment" message is passed to Flutter via the browser window messaging which causes the Flutter app to increment its counter
GitHub
github.com/fre...
github.com/fre...
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