Save game data into iCloud via GameKit

Question

I'm trying to save game's data to iCloud via next code:

GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer];
[localPlayer saveGameData:[NSData dataWithBytes:rawData->data() length:rawData->size()]
                 withName:[NSString stringWithUTF8String:fileName.c_str()]
        completionHandler:^(GKSavedGame *savedGame, NSError *error) {
            if (error == nil) {
                DebugLog(@"Snapshot successfully saved");
            } else {
                DebugLog(@"saveSnapshot error: %@", error.description);
            }
        }];

But getting error message: The requested operation could not be completed because you are not signed in to iCloud

I've tried to do this in iOS Simulator and on device but didn't succeed.
And tried to use test apple ID, dev apple ID, new apple ID, but didn't succeed too.
User is logged in to iCloud in iOS Settings and logged in to Game Center.

Any suggestions?

Answer 1

I had a similar issue. After I signed in with my iCloud account on my device's settings, the exact same error was still showing up, and it only stopped when I enabled the iCloud Drive for my account, otherwise it will never work.

So, it looks like the user must be using iCloud Drive, otherwise GKSavedGame will never work. Apple docs never mention that as far as I'm aware.