Develop Reference

Activity Manager can't find my Service - why?

I have a service which returns START_STICKY on #onStartCommand() and it is being started in my MainActivity's #onCreate() method. When i close my app, Service is being destroyed and it starts itself again. However, when it starts itself, ActivityManager can't find it. So there are 2 instance of my service running..
I use this code to check is service dead, it returns true everytime even if it lives after service starts itself.
public static boolean isServiceDead(Context context) {
final ActivityManager am = (ActivityManager) context.getSystemService(ACTIVITY_SERVICE);
for (ActivityManager.RunningServiceInfo runningServiceInfo : am.getRunningServices(Integer.MAX_VALUE))
if (runningServiceInfo.service.getClassName().equals(LockerService.class.getName()))
return false;
return true;
}

Controlling background service from another instance of an app

I made an application that fires a long-lived background service. Sometimes the application itself is closed, and the service keeps running, which is the way I want it.
The problem is that I don't know how to control that service after the caller application is closed. For example if the users re-opened the app, I'd like to give them the option whether to kill that process or keep it running.
I am able to detect if the service is running by using the following function (taken from this solution):
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;
}
I tried then calling this line from the activity, but that didn't do anything:
if(isMyServiceRunning(MyService.class)) {
stopService(new Intent(this, MyService.class));
}

OnCreate in Application class called twice

I didn't use android:process in my AndroidManifest. When I launch app oncreate in Application class get called twice. I would like to know what could cause such behaviour.

Probably you call your service when you run your app.
Use this to prevent recalling the service several times:
Intent intent = new Intent(YourActivity.this, YourService.class);
if (!IsServiceRunning(YourService.class)) {
startService(intent);
}
Use this function to check whether the service is running or not:
public boolean IsServiceRunning(Class<?> serviceClass) {
ActivityManager manager = (ActivityManager) getSystemService(getApplicationContext().ACTIVITY_SERVICE);
for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
if (serviceClass.getName().equals(service.service.getClassName())) {
return true;
}
}
return false;
}

How to rebind to foreground service?

A foreground service is started and immediately bound to. Is there a way to know whether the serivce has been stopped or is still running after an activity restart. The safe way would be to execute startService anyway, but is there a cleaner one?

You can use this method from:
https://stackoverflow.com/a/6452570/5457878
To check if your service is still running. You can call this method in your onResume() or onCreate(), and if it is not running, I would restart it.
private boolean isServiceRunning(String serviceName){
boolean serviceRunning = false;
ActivityManager am = (ActivityManager) this.getSystemService(ACTIVITY_SERVICE);
List<ActivityManager.RunningServiceInfo> l = am.getRunningServices(50);
Iterator<ActivityManager.RunningServiceInfo> i = l.iterator();
while (i.hasNext()) {
ActivityManager.RunningServiceInfo runningServiceInfo = i
.next();
if(runningServiceInfo.service.getClassName().equals(serviceName)){
serviceRunning = true;
if(runningServiceInfo.foreground)
{
//service run in foreground
}
}
}
return serviceRunning;
}

Android: check if my Service is running in the background

I am running a Service to get Notifications every 1 hour in my application.
The service definitely runs every 1 hr; I checked it using the Logcat.
But since I am starting this Service in the onResume() of my MainActivity, I want to check whether the Service is already running, and start it only if it's not running.
I used this code:
private boolean isMyServiceRunning() {
ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
if ("com.android.MyApp.MyServices.NotificationsService".equals(service.service.getClassName())) {
return true;
}
}
return false;
}
But I always get false.
So I checked what output service.service.getClassName() gives. And my Service is not there in the list.
Is it because my application is unknown? or something else?

I know its bit late but this answer might help others who are looking for the same.
Have you started your service by using context.startService()?
Make sure that the manifest file contains following:
<service android:name="com.android.MyApp.MyServices.NotificationsService" />

private boolean isMyServiceRunning(Context mContext) {
ActivityManager manager = (ActivityManager) mContext
.getSystemService(Context.ACTIVITY_SERVICE);
for (RunningServiceInfo service : manager
.getRunningServices(Integer.MAX_VALUE)) {
if (**HERE_YOUR_SERVICE'S_CLASS_NAME**.class.getName().equals(
service.service.getClassName())) {
return true;
}
}
return false;
}
// i have background GPS service and i have successfully checked that my GPS service is either running or not.
// Happy coding...