startForeground() does not show my Notification
AndroidServiceForegroundAndroid Problem Overview
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"), but startForeground()
does not actually show my notification. And no exceptions is thrown. To make it shown, I need to use NotificationManager
like here explained. With NotificationManager
my notification works, but i'm not sure that my Service
is foreground after this "silent" call to startForeground()
.
What can be wrong?
EDIT: I just tested this sample project that should demonstrate startForeground()
, but it does not work! I use API v7.0, I tested it both on emulator and real device (SE Xperia Neo). Notification does not appear.
EDIT2: if i try to call setForeground()
then i got a warning setForeground: ignoring old API call
.
I also tried to use startForegroundCompat()
as described here, but effect is absolutelly the same. I check if my service is foreground using ActivityManager.RunningServiceInfo
as described here, and I see that my service is not foreground.
Android Solutions
Solution 1 - Android
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.
Solution 2 - Android
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
Solution 3 - Android
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.
Solution 4 - Android
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.
Solution 5 - Android
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.
Solution 6 - Android
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