There's a number of issues with this plugin:

• The example should illustrate how to follow a link and open the new page.
• When the application is already running, it is not possible to retrieve the deep link.

Details for 1: Right now it requires user to paste the link to an application like Keep and click on it. Ideally the link displayed on the page should be clickable (see url_launcher plugin).

Details for 2: initState is not called so the link cannot be retrieved. I tried retrieving it in various lifecycle events of the State and came up empty. It also seems like the resume lifecycle event is not generated which might imply Firebase is handling this case differently than the usual Android lifecycle.