startForeground() does not show my Notification

Question

I am trying to make my Service running in foreground. I tried to use this example (please look for the section \"Running a Service in the Foreground\")

Answer 1

This might be an old thread, but I'd like to add what I just learned which is not mentioned yet:

It is possible that a Service is still alive after stopSelf() is called because there are Activity that have bound to the Service. As a matter of fact, the startForeground() is just not going to show the notification nor giving any exception in this circumstance.

Answer 2

DMitry. I have just suffered your problem and found the cause.

If your app is changing state of a COMPONENT PackageManager.setComponentEnabledSetting()) Android removes the service from foregraound and its notification icon.

Bug reported at Nov, 2011

Answer 3

in my case there was no notification after startForeground(...) invoke because I used only .setSubText(...) for setting the message of it (because it is rendered with smaller font on most of devices). But some of devices Xiaomi Redmi Note 4 won't show any notification if You not set message by using .setContentText(...).

Hope that will help someone

Answer 4

I just noticed that startForeground() doesn't show the notification icon if the id parameter is set to 0...

startForeground(0, notification); // Doesn't work...

startForeground(1, notification); // Works!!!

I hope that it could help someone stuck on this.

Answer 5

in addition to the best answer. you should also check that have you called setSmallIcon. On my android phone, I cannot get what I expected without calling setSmallIcon

Answer 6

Is your service a started service or a bound service? I had the same issue with a bound service, but starting the service before binding it allowed me to call startForeground(int, notification) with and have the notification show up.