Android Question Creating a real time shopping list

[JakeBullet70]

Hi all.

I want to create a real time shopping list.
So I want to have say 2 or 3 (or what ever) separate Android apps and hook them together so they share real time data adds and deletes.

I have looked at Erel original Parse Library, agraham overhaul of the parse library and Erel GCM framework. I am thinking that is what I need?

Question is...

Will any of these work?
If so what is the best?
or is there something else I need?

Thanks

 

[thedesolatesoul]

I think there are two components here you need to take care of. Storing the data/lists and notifying changes in realtime.
With Parse you can both store and notify. However parse is not 100% free but for small scale stuff its free.
With GCM you get realtime communication (can also send data but better to keep the lists centralized). The advantage of GCM is that the service is running on your device anyway so no extra power consumption. To keep the list centralized you may want to store it else where. You can use the google tasks api or store it on a server or on dropbox.
Dropbox is also working on webhooks so they can notify devices when a file changes on the servers. That will also be useful when it is available.