Can I get some help with dynamic text viewing and editing?

[AC Question]

Dynamic text viewing and editing

Hi;
I am developing an android app. A part of it is that I want to show some text to the user. I want to provide some simple tools for the user to edit the text. The simplest thing I want is for the user to be able to highlight some arbitrary words or change their color. What should I use to provide these features?

Thank you