How are emoji keyboards made in android, like telegrams for example?

Question

Android

How are emoji keyboards made in android, like telegrams for example?

Answer 1

There are many ways.
From swapping resources in the keyboard app to using themes (substratum).
Since you didn't specify which keyboard you want to do this for, it's not possible to tell if it has a choice of emoji style.
There is a lot of information on your question here:
https://www.google.com/search?newwindow=1&q=change...