reloaddata

I'm having problems with [UICollectionView reloadData] , which seems to get stuck for quite a while before it calls numberOfSectionsInCollectionView on its delegate that I have specified. This is what happens: The app starts with the UICollectionView immediately visible and numberOfSectionsInCollectionView is called on the delegate, which returns the number of items in an empty array (i.e. 0) and immediately starts to download the data for the array from a web service. Once the download is complete, the data is deserialized and added to the above array, then reloadData is called on the

I ran into an issue similar to this earlier on the iPhone, but the same solution doesn't seem to apply to the iPad environment. My goal is to call my method forceReload , defined in my RootViewController, that will reload the countdown_table's data in the RootView from the DetailView once a modal is dismissed. forceReload works fine when called directly from the RootViewController, but I can't seem to point to point to the RootViewController from the DetailView. I've tried using RootViewController *root_view = [self.splitViewController.viewControllers objectAtIndex:0]; [root_view forceReload];

I'm using TBXML+HTTP to get XML data from a website. What I want to do is populate a UITableView with the processed data. I've created a NSMutableArray that holds all the entries and, as far as that goes, everything is working fine. The problem is when, after successfully fetching the data from the server and storing it in the array, I try to update the table to show the data, using reloadData . It takes about 5 seconds to populate the table with 20 rows. The weird part is that the fetching is happening really fast, so the data is available right away. I do not understand what is taking so

The problem is the UI appears and then gets updated : giving a flickering affect. I want the UI to be updated only once when user enters app, thus i've put reload in ViewDidLoad.. Here is the code .. Any help how can remove this flickering ... Some code example would help. - (void)viewDidLoad { [super viewDidLoad]; self.myTableView.dataSource = self; self.myTableView.delegate = self; PFQuery * getCollectionInfo = [PFQuery queryWithClassName:@"Collection"]; // make query [getCollectionInfo orderByDescending:@"updatedAt"]; [getCollectionInfo setCachePolicy:kPFCachePolicyCacheThenNetwork];

Does anyone know how to reload/refresh a UICollectionView while the collection view is being displayed? Basically I'm looking for something similar to the standard reloadData method for a UITableview. Firo You can just call: [self.myCollectionView reloadData]; Individual sections and items can also be reloaded: [self.myCollectionView reloadSections:indexSet]; [self.myCollectionView reloadItemsAtIndexPaths:arrayOfIndexPaths]; [self.collectionView reloadData]; The correct and best way is to use NSMutableArray *indexPaths = [NSMutableArray array]; //prepare some data //batchupdate as block [self