Store Array in UserDefaults and also Update and Remove Facility.

In AppDelegate.h file just declare variable...

NSUserDefaults  *userDefaults;

NSMutableArray *arrAppFavPot;

NSMutableArray *arrAppFavPlant;

after...

In AppDelegate.m Fille in applicationDidFinishLonching: Method

userDefaults = [NSUserDefaults standardUserDefaults];

    NSData *dataRepresentingtblArrayForSearch = [userDefaults objectForKey:@"arrAppFavPot"];

    if (dataRepresentingtblArrayForSearch != nil) {

        NSArray *oldSavedArray = [NSKeyedUnarchiver unarchiveObjectWithData:dataRepresentingtblArrayForSearch];

        if (oldSavedArray != nil)

            arrAppFavPot = [[NSMutableArray alloc] initWithArray:oldSavedArray];

        else

            arrAppFavPot = [[NSMutableArray alloc] init];

    } else {

        arrAppFavPot = [[NSMutableArray alloc] init];

    }

    [arrAppFavPot retain];

    

    NSData *dataRepresentingtblArrayForSearchPlant = [userDefaults objectForKey:@"arrAppFavPlant"];

    if (dataRepresentingtblArrayForSearchPlant != nil) {

        NSArray *oldSavedArrayPlant = [NSKeyedUnarchiver unarchiveObjectWithData:dataRepresentingtblArrayForSearchPlant];

        if (oldSavedArrayPlant != nil)

            arrAppFavPlant = [[NSMutableArray alloc] initWithArray:oldSavedArrayPlant];

        else

            arrAppFavPlant = [[NSMutableArray alloc] init];

    } else {

        arrAppFavPlant = [[NSMutableArray alloc] init];

    }

    [arrAppFavPlant retain];

after that when you want to insert,update or delete Data from this UserDefaults Use Bellow Code...

        [appDelegate.arrAppFavPot removeObjectAtIndex:carouselPot.currentItemIndex];

        

or

    

        [appDelegate.arrAppFavPot addObject:[arrPot objectAtIndex:carouselPot.currentItemIndex]];

    

    

    NSData *data=[NSKeyedArchiver archivedDataWithRootObject:appDelegate.arrAppFavPot];

    [appDelegate.userDefaults setObject:data forKey:@"arrAppFavPot"];

    [appDelegate.userDefaults synchronize];