I'm working on an app and I want to open my own custom file type (.bzk) with my app. I am using Xamarin.Forms to create this app and I am stuck right now. I have found this [https://gist.github.com/brendanzagaeski/70afe08654927befb26b](Github Gist) which should help but I have no idea how it works. I can't really find a lot of documentation about it, either.
I want my app to appear in [techsupportalert.com/files/images/pc_freeware/android_apps/Default-App-200-153.jpg](this list) .
Does anyone have any samples or some other information which could help me out with this problem?