MarkdownView VS Litho (By Facebook)

falnatsheh/MarkdownView - MarkdownView is an Android webview with the capablity of loading Markdown text or file and display it as HTML, it uses MarkdownJ and extends Android webview.

Waiting for Litho to be the new UI development standard https://fblitho.com/

IIRC fb is using this custom list view https://fblitho.com/

Litho by Facebook

Just a little correction, none of facebook or instagram mobile app use react native. On android, facebook, messenger, and instagram use litho library (which facebook team has also developed)

It seems unlikely that FB would give up on Litho, which is extremely performance focused, to use react native instead. Not for their bread & butter flagship news feed anyway https://fblitho.com/

I've seen some old conference talks from their team about https://fblitho.com/. I believe that what they use or at least used.

Facebook's internal android repository is still mostly Java, but there is a large push to switch to Kotlin, and Kotlin's internal support has grown dramatically over the last couple of years. Coroutines have recently been allowed (although I'm personally not a fan of that decision). Flow/Compose are not necessary as we have internal tools that do similar things (looking at you, Litho).