I must be missing something very basic, but I cannot get iCloud KV storage to
work. I've really perused the documentation on many fronts, but I'm still
stumped.
My app's provisioning profile is configured for iCloud, all the correct
entitlements are set, and I can even see the the Ubiquity "Documents" container
in iCloud. But for the life of me, I cannot get any changes to KV storage to
propagate to iCloud, or get a notification back if a KV item changed.
I register for a notification:
NSUbiquitousKeyValueStore* store = [NSUbiquitousKeyValueStore
defaultStore];
if ( store ) {
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(updateKVStoreItems:)
name:NSUbiquitousKeyValueStoreDidChangeExternallyNotification
object:store];
}
The first time the app writes to NSUbiquitousKeyValueStore, I do get the
NSUbiquitousKeyValueStoreInitialSyncChange notification. After that, I never
receive any notifications again on that device when the the same app running on
another device changes the NSUbiquitousKeyValueStore (or the same app running
on the same device for that matter).
For example, this only drives the notification on the initial call, even though
many keys in[NSUserDefaults standardUserDefaults] have corresponding changed
values:
NSUbiquitousKeyValueStore* store = [NSUbiquitousKeyValueStore
defaultStore];
if ( store ) {
[store setDictionary:[[NSUserDefaults standardUserDefaults]
dictionaryRepresentation] forKey:@"DictionaryTest"];
}
The app is obviously configured correctly, or I would not see any Ubiquity
documents in the iCloud Developer Web site. It's the KV storage I can't get to
work, or rather I never receive any change notifications for Ubiquity KV
storage.
Apple has done a remarkable job of simplifying the developer's tasks. But,
maybe I've oversimplified it, 'cuz it ain't workin' for me! Any clues what I'm
missing?
Paul
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