Question

I’m creating a service Thread for my application, this thread will perform background tasks, and therefore it’ll be usage only if my Main thread is running.

So should I declare it as a Daemon ?

Answer 1

On Android, it’s better to make sure you manage your threads explicitly. Tell them when to terminate.

See a related discussion here. They didn’t find a solution, and observed long-living threads instead:

What hooks do we have in order to do worker thread termination on application exit

Note that standard Java shutdown hooks are not guaranteed on this platform:

http://developer.android.com/reference/java/lang/Runtime.html#addShutdownHook%28java.lang.Thread%29

So, instead of relying on an (undocumented?) belief that Android will properly kill your VM anyway and guessing on daemon/not daemon, it seems to be better to control the threads.