Persistence means your application can save data across sessions.
Example: Your application let's the user enter which books he likes.
When the user closes his browser and logs into Orkut and pulls up your
application again a few days later he doesn't want to enter the books
again, but expects that the application "remembered" them. That's what
you use the persistence stuff for. Docs:
http://code.google.com/apis/opensocial/docs/0.7/devguide.html#Persistent
An Activity is a way of letting your friends know about something you
did ("Peter just added a new Book named "No Country For Old Men"").
Docs: http://code.google.com/apis/opensocial/docs/0.7/devguide.html#Activities
I hope this helps.
- Johannes
--
http://blog.springenwerk.com
On Apr 30, 7:09 am, humbroll <[EMAIL PROTECTED]> wrote:
> persistence and activity, two feature of three primary areas of
> functionality in the OpenSocial API.
>
> what's the difference between them exactly?
>
> is there any document about it? or use case?
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