How to automate actions in a third party application on Android?

Question

Android

Hello toaster!
Tell me, is there a way to automate certain actions in a third-party Android application?
Something like xstarter for windows. For example, you need to automate the following task:
There is a text file with 1000 lines, you need to take 1 line from this file, insert it into a certain textbox in the application and then somehow parse the value of a certain label that has changed in one way or another. If the value is A - put the original line in another text file A.txt otherwise in B.txt.
I think the meaning is clear. Tell me what to read, in which direction to look? Google didn't say anything useful :(

Answer 1

Try Tasker _