How to close the application and remove it from memory?

Question

Android

Good day.
How to programmatically close the application and remove it from memory?
There is something like a messenger for lovers, without knowing about its presence, it cannot be launched. It also needs to be quickly hidden.
The point is that if you minimize the application, or when making a call ... it should not be displayed in recently opened applications ─finish() is not suitable for this.

Answer 1

Try

android:autoRemoveFromRecents
Whether or not tasks launched by activities with this attribute remains in the overview screen until the last activity in the task is completed. If true, the task is automatically removed from the overview screen. This overrides the caller's use of FLAG_ACTIVITY_RETAIN_IN_RECENTS. It must be a boolean value, either "true" or "false".

and
System.exit(0);