force-closing an app with a service: onDestroy() is not called in service?

Question

I\'ve implemented a sticky service and when I force close the app I see that the Activity\'s onDestroy() is called. But the service doesn\'t apparently do anything.

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Answer 1

Expecting a service to be force closed seems kinda weird to me. Anyways if the process is terminated i would expect any open file handle to be closed by the linux subsystem.

Also as stated by CommonsWare onDestroy isn't guaranteed in any case.

Answer 2

It's worse. onDestroy is only called in emulator environment (for testing), but never on a real phone....

And exactly as @mibollmba said - files will be closed when process dies. No need to handle file close.

Answer 3

how do I know when the service is force closed?

You don't. onDestroy() is not guaranteed to be called, on any component.

I need to trap that event so that I can close files.

Then don't leave them open.