Calling android shell app native function from trusted web activity(PWA)

Question

I am trying to call android shell app native function from a trusted web activity in a PWA.

I know that we can do this for webviews using @JavascriptInterface notation, but couldn't find any information if same can be done for trusted web activity as well.

Is it possible to do this?

Answer 1

Trusted Web Activities currently don't have an API that is analog to WebView's addJavaScriptInterface(). It's only possible to pass parameters when starting the activity, via query parameters or custom headers. I do recommend filing an issue at https://crbug.com/ describing the use-case you'd like to use this API for, so the team can investigate providing an API for that.