Android, does foreground service keep app alive?

Question

Will Android kill public class App extends Application if there is a foreground service running?

I am not sure if it's even important... If I have a reference from that service to a object instantiated in Activity or App and that Activity/App gets killed, will reference from the service still be valid?

Last question is... What happens with static fields if app associated with the class containing the static fields gets killed?

Answer 1

Will Android kill public class App extends Application if there is a foreground service running?

Classes are not "killed" in Android. Processes are terminated. An Application instance is created when your process is created, and it remains around until the process is terminated.

So long as the foreground service is running, it's process is alive (by definition), and its Application will remain around.

What happens with static fields if app associated with the class containing the static fields gets killed?

Again, classes are not "killed" in Android. Processes are terminated. When your process is terminated, everything in memory goes away, including static fields and their references.