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From Joe Bowser <bows...@gmail.com>
Subject Re: Cordova Activity Code Changes
Date Fri, 11 Jan 2013 18:26:47 GMT
I've added this master. Even with the uncertainty, it's better to have
this code than not.

On Thu, Jan 10, 2013 at 6:50 PM, Joe Bowser <bowserj@gmail.com> wrote:
> On Thu, Jan 10, 2013 at 6:31 PM, Andrew Grieve <agrieve@chromium.org> wrote:
>> I'd like to verify if this is the scenario:
>> 1. We invoke an intent that causes another app to take the foreground.
>> 2. Our app is forced to close by the OS due to memory pressures
>> 3. The other app finishes and sends an intent back to us
>> 4. Our app re-initializes, finds the plugin that started the request, and
>> gives it the result
>>
>
> That's the exact scenario!  In theory this should work.  In practice,
> it sort-of works, except that the Camera doesn't pass data back if you
> don't allow background processes (I tested it by restricting the
> background processes).
>
>> Assuming I've got this straight, I think there is value in adding in this
>> code. *if* apps design themselves such that their state is always stored,
>> then they should have a chance at restoring their state when they
>> re-launch.
>>
>> Uncertainties I have:
>> 1. Do we have a chance to give JS some time to run
>> within onSaveInstanceState? Perhaps we can send a message to the webkit
>> thread and then just sleep for a second? Perhaps even let it store things
>> in the Bundle?
>
> I don't know.  I'm hoping that this stops when we save the WebKit
> state, but I'd have to go spelunking in the Android WebKit code to
> figure this out.
>
>> 2. Upon re-launch, can we signal to the JS that it is "restarting" instead
>> of starting from scratch?
>
> We could easily do this, since we have to watch for the bundle in the
> activity in the first place.  From my tests, restoring the state is
> the same as hitting the refresh button on the page.  I have no idea
> what happens to session variables or anything else that is present at
> that time.
>
> Joe

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