Check if service is running without using getRunningServices

I have an app:
The app starts,the user presses a button,a service starts, the user can destroy the activity, but keep the service running.
If the user restarts the activity, how can i check that the service is running to display an appropriate message?
this
How to check if a service is running on Android?

private boolean isMyServiceRunning(Class<?> serviceClass) {
ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
if (serviceClass.getName().equals(service.service.getClassName())) {
return true;
}
}
return false;
}


uses deprecated methods. I was thinking of using a broadcast receiver in the activity and another one in the service to communicate, I was wondering if there was a better, more elegant way, and if not, what the timeout should be (how long does it take for a broadcast to be received)?

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