First commit

MKiCloudSync.h

@@ -0,0 +1,23 @@
+//
+//  MKiCloudSync.h
+//  iCloud1
+//
+//  Created by Mugunth Kumar on 20/11/11.
+//  Copyright (c) 2011 Steinlogic. All rights reserved.
+
+//  As a side note on using this code, you might consider giving some credit to me by
+//	1) linking my website from your app's website 
+//	2) or crediting me inside the app's credits page 
+//	3) or a tweet mentioning @mugunthkumar
+//	4) A paypal donation to [email protected]
+//
+//  A note on redistribution
+//	if you are re-publishing after editing, please retain the above copyright notices
+
+#import <Foundation/Foundation.h>
+#define kMKiCloudSyncNotification @"MKiCloudSyncDidUpdateToLatest"
+
+@interface MKiCloudSync : NSObject
+
++(void) start;
+@end

MKiCloudSync.m

@@ -0,0 +1,101 @@
+//
+//  MKiCloudSync.m
+//  iCloud1
+//
+//  Created by Mugunth Kumar on 20/11/11.
+//  Copyright (c) 2011 Steinlogic. All rights reserved.
+
+//  As a side note on using this code, you might consider giving some credit to me by
+//	1) linking my website from your app's website 
+//	2) or crediting me inside the app's credits page 
+//	3) or a tweet mentioning @mugunthkumar
+//	4) A paypal donation to [email protected]
+//
+//  A note on redistribution
+//	if you are re-publishing after editing, please retain the above copyright notices
+
+
+#import "MKiCloudSync.h"
+
+@implementation MKiCloudSync
+
++(void) updateToiCloud:(NSNotification*) notificationObject {
+
+    NSLog(@"Updating to iCloud");
+
+    NSDictionary *dict = [[NSUserDefaults standardUserDefaults] dictionaryRepresentation];
+
+    [dict enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
+
+        [[NSUbiquitousKeyValueStore defaultStore] setObject:obj forKey:key];
+    }];
+
+    [[NSUbiquitousKeyValueStore defaultStore] synchronize];
+}
+
++(void) updateFromiCloud:(NSNotification*) notificationObject {
+
+    NSLog(@"Updating from iCloud");
+
+    NSUbiquitousKeyValueStore *iCloudStore = [NSUbiquitousKeyValueStore defaultStore];
+    NSDictionary *dict = [iCloudStore dictionaryRepresentation];
+
+    // prevent NSUserDefaultsDidChangeNotification from being posted while we update from iCloud
+
+    [[NSNotificationCenter defaultCenter] removeObserver:self 
+                                                    name:NSUserDefaultsDidChangeNotification 
+                                                  object:nil];
+
+    [dict enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
+
+        [[NSUserDefaults standardUserDefaults] setObject:obj forKey:key];
+    }];
+
+    [[NSUserDefaults standardUserDefaults] synchronize];
+
+    // enable NSUserDefaultsDidChangeNotification notifications again
+
+    [[NSNotificationCenter defaultCenter] addObserver:self 
+                                             selector:@selector(updateToiCloud:) 
+                                                 name:NSUserDefaultsDidChangeNotification                                                    object:nil];
+
+    [[NSNotificationCenter defaultCenter] postNotificationName:kMKiCloudSyncNotification object:nil];
+}
+
++(void) start {
+
+    if(NSClassFromString(@"NSUbiquitousKeyValueStore")) { // is iOS 5?
+
+        if([NSUbiquitousKeyValueStore defaultStore]) {  // is iCloud enabled
+
+            [[NSNotificationCenter defaultCenter] addObserver:self 
+                                                     selector:@selector(updateFromiCloud:) 
+                                                         name:NSUbiquitousKeyValueStoreDidChangeExternallyNotification 
+                                                       object:nil];
+
+            [[NSNotificationCenter defaultCenter] addObserver:self 
+                                                     selector:@selector(updateToiCloud:) 
+                                                         name:NSUserDefaultsDidChangeNotification                                                    object:nil];
+        } else {
+
+            NSLog(@"iCloud not enabled");
+
+        }
+    }
+    else {
+
+        NSLog(@"Not an iOS 5 device");        
+    }
+}
+
++ (void) dealloc {
+
+    [[NSNotificationCenter defaultCenter] removeObserver:self 
+                                                    name:NSUbiquitousKeyValueStoreDidChangeExternallyNotification 
+                                                  object:nil];
+
+    [[NSNotificationCenter defaultCenter] removeObserver:self 
+                                                    name:NSUserDefaultsDidChangeNotification 
+                                                  object:nil];
+}
+@end