Good approach to achieve Android facebook messenger type input keyboard

Question

I'm developing chat app like Facebook messenger where I need to create input keyboard like Facebook messenger app provides.

Primarily I thought I should do it using tab layout with view pager. On github I found one third party library which provides custom keyboard with emoji.

After seeing this library I get confused that weather I should create custom keyboard or follow simple tab layout and view pager to achieve this kind of keyboard.

What is good approach to design this kind of keyboard?

Edit:

1. I found Input Method Framework provided by Android platform which allow to create custom keyboard, but in messenger app as I seen for text they are using default keyboard and for only sticker/emoji there is replacement of default keyboard happening.
2. Android 7.1 now providing CommitContent API to use rich content using keyboards universally, still I'm not able to figure out how can I switch between default keyboard and custom keyboard?

Answer 1

Check out below the library:

https://github.com/ankushsachdeva/emojicon

This is not 100% solution for you but can get idea about how to create keyboard like facebook messanger.