android - Protect view (from all accessibility services, spyware and similar)

Question

How can I protect views and their content from any accessibility service and maybe other ways spyware could read my apps data from the screen? Like banking apps (should) do it e.g.?

Background

I want to write a small open source and minimal password manager where you can just enter your sensitive data and read it, if desired and needed.

What I found so far is following

• I can set the IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS flag in my root view, this should save my app from accessibility services

Questions

• does the flag above reliably protect my app from any accessibility service?
• banking apps often disallow screenshots - how can I do this as well?
• anything else that I should block to protect my app?

question from:https://stackoverflow.com/questions/65882106/protect-view-from-all-accessibility-services-spyware-and-similar

Answer 1

Waitting for answers