I got curious about the "Broadcast Tile" option in Android M's System UI Tuner, so I did some digging last night. Here's a write-up explaining what it's for, how to use it, and some sample code on GitHub.
Hey everyone, I've updated the "About this community" section with links to enable your account to beta test the app. Totally thought that happened based on joining the community, so sorry about that. :)