Disable backup of documents folder and all its sub folders on icloud?

Question

I have an already running enterprise application which stores a lot of documents inside the documents folders. I wish to disable the iCloud backup of all these documents and folders inside the Documents folder. The problem is that the contents inside the folder keep on changing dynamically and the idea of adding kCFURLIsExcludedFromBackupKey for every files sounds a bit difficult, as there are multiple classes in my code which can write to the documents directory.

Is there any way I can disable the upload of the entire documents folder and its subfolder.

Answer 1

Perhaps the files are changing dynamically because they are being regularly updated from a server or similar? If so, then the answer is to move your file storage from the <Application_Home>/Documents directory to the <Application_Home>/Library/Caches directory. These documents will not be backed up. This is of course only suitable if the data can be re-downloaded or recreated in the future, if required.

See this Apple documentation for an overview: https://developer.apple.com/icloud/documentation/data-storage/index.html

Answer 2

In appDelegate of your application in the following method

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

Add this code

    NSArray *urlArray = [[NSFileManager defaultManager] URLsForDirectory: NSDocumentDirectory inDomains: NSUserDomainMask];
    NSURL *documentsUrl = [urlArray firstObject];

    NSError *error = nil;
    BOOL success = [documentsUrl setResourceValue: [NSNumber numberWithBool: YES]
                                  forKey: NSURLIsExcludedFromBackupKey error: &error];
    if(!success){
        NSLog(@"Error in disabling %@ from backup %@", [documentsUrl lastPathComponent], error);
    }