How to make the application send a certain Notification when trying to unlock the device?

Question

Android

Actually, the essence of the question is simple. How to make the application "see" the moment when the user tries to unlock the device or simply activates the screen.

Answer 1

It seems to me that the combination of intentions will Intent.ACTION_USER_PRESENTsave the Intent.ACTION_SCREEN_ONfather of Russian democracy. :) Register a custom handler for them in the manifest, and send a notification from it.