Android Question How to show notifications builder automatically

[Muhamad Hendra]

I have a label in my app
The label is date, example 11-02-2020

I want to show notifications builder (NB6) when the label is 12-02-2020, but when the app is not open. So automatically show

How to?
Thanks

Sorry iam litle English
Iam from Indonesia

 

[Erel]

Search for StartServiceAt.

 

[Muhamad Hendra]

Search for StartServiceAt.

Oke thanks Erel