Android Question Service like instagram ...

[mrezaes]

hi
i have to develope a service for gps tracking .
but when user close all apps with finger swipe service will die.
i wonder how instagram or telegram after close app recieve your message . and show with notification.
pls upload a sample that has service and user cannot close it or if closed start automatically.

sorry for my bad english.
thanks

 

[sz4t4n]

See this -> https://www.b4x.com/android/forum/t...-messages-firebase-cloud-messaging-fcm.67716/