This Android application demonstrates the use of the Firebase SDK to create a shared drawing canvas. Multiple users can run the app and draw on the same canvas. Line segments are synchronized as the user draws them.
The drawing and color-picking portions of this application are largely adapted from Google's ApiDemo application, shipped with the Android SDK as part of the sample code.
This example is intended to demonstrate how you can adapt single-user applications to be collaborative with the help of Firebase. Create your own Firebase and incorporate these techniques into your own application!
Also, check out our Quickstart guide for more information on setting up the Firebase SDK on Android.