Thursday, September 23, 2010

Re: [android-developers] onRetainNonConfigurationInstance() and ServiceConnection

If you bind with the application context, it will be fine.

On Thu, Sep 23, 2010 at 6:18 PM, Mark Murphy <mmurphy@commonsware.com> wrote:
In an earlier thread on this group, it was pointed out that it is safe
to pass a properly-constructed AsyncTask object from an old activity
to a new one via onRetainNonConfigurationInstance(), so we can keep
the background work running when the device changes orientation, dock
status, etc.

What about ServiceConnection?

In other words, if an activity is bound to a service, is there a way
we can keep the binding alive during the configuration change, by
passing a properly-constructed ServiceConnection from the old activity
to the new? Or do we have to unbind in the old activity and bind again
in the new one?

Since ServiceConnection is just an interface, it should be fairly
trivial to have that object be clean for passing via
onRetainNonConfigurationInstance(). I'm just not sure if there's
something else held inside Android's innards that might get confused
if we do this.

Thoughts?

Thanks!

--
Mark Murphy (a Commons Guy)
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_The Busy Coder's Guide to Android Development_ Version 3.1 Available!

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Dianne Hackborn
Android framework engineer
hackbod@android.com

Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails.  All such questions should be posted on public forums, where I and others can see and answer them.

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