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I have three different viewControllers and they have tableViews in each. 1) firstViewController : has some boynames (loading from plist file boynames) 2) secondViewController : has some girlnames(loading from plist file girlnames) 3) thirdViewController: has saved favorite names (should load from another plist file favoritenames)

My question is when I am saving the names from my firstViewController/secondViewController by clicking on a button attached to the cells, these saved names show up in the thirdViewController only when I load the application for the first time. Then they stop adding to the thirdViewController. I have written the code in viewWillAppear method in my thirdViewController. Any help will be appreciated.

    - (void) viewWillAppear:(BOOL)animated {
        [super viewWillAppear:animated];
        // Do any additional setup after loading the view, typically from a nib.
        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        NSString *documentsDirectory = [paths lastObject];
        NSString *path = [documentsDirectory stringByAppendingPathComponent:@"NamesForThirdView.plist"];

        self.userSelectedNamesAndMeaning = [[NSMutableDictionary alloc] initWithContentsOfFile: path];
       // self.allSelectedNames = [self.userSelectedNamesAndMeaning allKeys];
        NSArray *allNames = [self.userSelectedNamesAndMeaning allKeys];
        self.allSelectedNames = [allNames    sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)];// Got shorted]

        [self.tableView reloadData];
    }
Lisa Satpathy
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  • From the docs: "viewWillAppear: Notifies the view controller that its view is about to be added to a view hierarchy.". I'm no iOS expert but if you have established this hierarchy (using a navigation controller or something) then it looks to me like this won't be called more than once. Perhaps you need to use notifications to notify other view controllers that the on-disk data has changed after writing it? – trojanfoe Nov 24 '13 at 10:26
  • Do you need to do this via plist files? Can't you just pass the dictionary between the viewcontrollers? – Leijonien Nov 24 '13 at 10:27
  • Further to my comment; add calls to `NSLog()` to see **when** `viewWillAppear` is called. This is probably the root cause of your issue. – trojanfoe Nov 24 '13 at 10:29
  • It's possible your `NSUserDefaults` haven't been sync'd to disk before you attempt to access them in the third view controller. You _could_ call `[[NSUserDefaults standardUserDefaults] synchronize]` somewhere, e.g. `viewWillDisappear` of one of your upstream controllers to see if that's the issue. Overall, using plists to manage your app's object graph is not the best idea. – FluffulousChimp Nov 24 '13 at 10:58
  • Thanks everyone for trying to help. But I have figured it out now. Seems to be a connection problem. I created an IBOutlet for my tableView like this @property(strong,nonatomic) IBOutlet UITableView *tableView; and connected the outlet to my tableView. – Lisa Satpathy Nov 24 '13 at 19:33
  • @trojanfoe viewWillAppear gets called every time the view appears. refer to this http://stackoverflow.com/questions/1579550/uiviewcontroller-viewdidload-vs-viewwillappear-what-is-the-proper-division-of – Lisa Satpathy Nov 24 '13 at 19:36

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