https://gist.githubusercontent.com/chrisward/bfb83e79a9c16e7161bb3edfc2c47b49/raw/397ca706960ed04f0800d41223d10070668e2280/MainActivity.kt
https://gist.githubusercontent.com/chrisward/bfb83e79a9c16e7161bb3edfc2c47b49/raw/d0b4f22b198876ef801d268ce146b0f19ad5bbb1/activity_main.xml
