uicollectionviewcell

I have images in my collectionViewCell's that are fetched and parsed via NSURLRequest, how do I cache these images so they don't have to start a new request with every single appearance/disappearance of the view? here is my code that fetches the images: class funnyPicture: NSObject { var pfPicture : PFObject var coverImage : UIImage! init(pfPicture: PFObject) { self.pfPicture = pfPicture } func fetchCoverImage(completion: (image: UIImage?, error: NSError?) -> Void) { let urlString = self.pfPicture["funnyPictures"] as! String let url = NSURL(string: urlString) let request = NSURLRequest(URL:

I'm working in a iOS project where i use collectionView using Autolayout and SizeClasses. custom UICollectionViewCell xib is used. Where i reuse custom cell in collectionView presenting two cells like below image in iPhone 5s. problem is while running the same project in iPhone 6 and 6 Plus, the cells are not resizing there is space between cells you can see it below. which is resizing in xib when the size of cell is increased and select update frames but not resizing for iPhone 6. Answers provided by other SO posts didn't helped. Math trick recall square root Number 33 = items count! You can

Seems XCode 6 is different in using viewwithtags then XCode 5 was. I am using the following code in XCode 6 with Storyboards. 50 cells are created but the label is not visible.Everything is set correctly like the tag etc. If I use the "old" XCode 5 way to do it with Register cell classed it seems to work for iOS 7 but in iOS 8 the data is not passed to the label until I start to scroll. static NSString * const reuseIdentifier = @"MyCell"; - (void)viewDidLoad { [super viewDidLoad]; // Register cell classes [self.collectionView registerClass:[UICollectionViewCell class]

I have a standard view controller that contains a collection view. I am populating the collection view with custom cells created from a custom subclass of UICollectionViewCell . What is the best practice of calling a method in the collection view class from within the collection view cell class Why doesnt the following init get called in my collection view cell class, I thought this would be called when the collectionView class creates my cells. (id)initWithFrame:(CGRect)frame The reason I want to do this is because I am deleting a collection view cell, the delete function is inside the

I have a UICollectionView on iOS7 which crashes randomly when intense scrolling. I enabled zombies and found that it gives me an error saying: *** -[NSIndexPath section]: message sent to deallocated instance 0x17dbc970 I believe this is due to an Apple error described here . Apparently, the app crashes when someone highlights a cell while scrolling fast, and then the OS tries to unhighlight it when it moves off screen, when it ceases to exist. The proposed solution is to disable the userInteractionEnabled property of the cell and then handle the selection using UIGestureRecogniser . Has anyone