<What is this pop up by Samsungs clock?> pardon my...

# stackoverflow

[user]

What is this pop up by Samsungs clock?
pardon my lack of knowledge. Can anyone tell me what this popup from Samsungs clock is when an alarm goes off? Is it a fragment, or an activity of its own? I was reading and android.com says that starting activities when the user is on screen is restricted. It can't be done because it is obtrusive. Could you please tell me what this pop up is called, and is it an activity, fragment, something else?

https://i.stack.imgur.com/dHbcm.jpg▾