Game Center offline question

[mobichan]

I had a strange revelation today when talking to a programmer friend. He mentioned that GameCenter stores data when you are offline. For some reason, I always assumed that you needed to manually store data when offline and then upload it to the GC servers whenever an internet connection was restored. If GC stores your data when offline, I wondered about the following:

1. Does the upload scores action send your data to a local file when offline?
2. Do you need to resend this local data manually when an internet connection is restored?

I have been trying to store data manually all this time, but I often run into issues with multiple GC accounts on the same device because of the complexity of it. Have I been missing out on this simple feature of GC?

[Keith]

From iOS 5 onward this is handled automatically. You only need to worry if you're going to support iOS 4.3.

[mobichan]

Sadly, I have to support 4.3. Is the best plan to simply have extra code that handles devices running 4.3? Is there even a way to detect the iOS version in MMF?

I'm also still curious about the questions above, if anyone can answer them.

[JoKa]

I had massive problems when trying to use GC or IAP in iOS 4.3 simulator. Both didn't work, so I switched to iOS 5 as minimum OS. Does GC with 4.3 still work for you?

[mobichan]

I tend to test on device, but my test device is using iOS 6.0. My publisher is reqiring support for 4.3 minimum, but they are doing the testing for that particular iOS. I am just trying to head off any potential problems.

GC works for posting leaderboard scores, but only for the first scoreboard I send a score to. Achievements appear to work as well. IAP are not working at all. Any idea if having support for 4.3 caused your problems? Or were the problems only occurring when you ran on a 4.3 device?

[JoKa]

I couldn't test on a real device. Since it works for you, maybe it was just a problem caused by the simulator. The 4.3 setting was fine for my devices with 5.1 and 6.0