Question

is there any way to leave a thread in background when i close the app in android? I read about a Service but implementing it is too much than i need. Thanks

Answer 1

Hi, is there any way to leave a thread
in background when i close the app in
android?

That will happen by default. That does not mean it is a good idea.

I read about a Service but
implementing it is too much than i
need.

More likely, it is precisely what you need.

If you start a thread in an Activity, then fail to stop that thread, it will run forever, until Android terminates the process, since you have no way of stopping it. The only sort-of acceptable exception is if your thread stops itself, and then you have to be very very careful that it actually does terminate cleanly. On the other hand, you can arrange to stop a running Service whenever you need, from any Activity, and that Service can arrange to stop the thread, so you don’t leak the thread indefinitely.

I strongly encourage you to implement a service that manages the thread.