How are the new swipe gestures in slack beta implemented ? If anyone could point to relevant documentation or example , it would be really great

It's a wild guess, but it looks like it's a

Fragment

based approach with a shared container. There's an old library that looks relevant, however not sure if Slack took the same road.

Looks like it might share some similarity with https://cs.android.com/androidx/platform/frameworks/support/+/androidx-master-dev:slidingpanelayout/slidingpanelayout/src/main/java/androidx/slidingpanelayout/widget/SlidingPaneLayout.java

it’s just a viewpager

Discord rolled out something very similar as well, but with some different twists on it

Pretty dope of discord to opensource a library for their implementation https://github.com/discord/OverlappingPanels Blog post on it https://blog.discord.com/how-discord-made-android-in-app-navigation-easier-fbd904d12521