iCloud实现APP多设备数据同步

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(objChange:) name:NSUbiquitousKeyValueStoreDidChangeExternallyNotification object:nil];

 

NSConcreteNotification 0x1c024ab60

{

name = NSUbiquitousKeyValueStoreDidChangeExternallyNotification;

object = <NSUbiquitousKeyValueStore: 0x1c4281cc0>;

userInfo = {

    NSUbiquitousKeyValueStoreChangeReasonKey = 0;

    NSUbiquitousKeyValueStoreChangedKeysKey =     (

        store

    );

}}

其中object就是NSUbiquitousKeyValueStore，可以从这里取值；

- (void)objChange:(NSNotification *)note

{

    NSString *store = [note.object objectForKey:@"store"];

    NSLog(@"store == %@",store);

    self.lb.text = store;

    

}

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