{"id":4369,"date":"2014-03-30T10:09:05","date_gmt":"2014-03-30T10:09:05","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2014\/03\/30\/problem-about-uicollectionviewcell-collection-of-common-programming-errors\/"},"modified":"2014-03-30T10:09:05","modified_gmt":"2014-03-30T10:09:05","slug":"problem-about-uicollectionviewcell-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2014\/03\/30\/problem-about-uicollectionviewcell-collection-of-common-programming-errors\/","title":{"rendered":"problem about uicollectionviewcell-Collection of common programming errors"},"content":{"rendered":"<ul>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/11c7f07dc2efaa6b3e29b2ebe2e88c47?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nZaakk<br \/>\nobjective-c ios uiwebview uicollectionview uicollectionviewcell<br \/>\nPlease help me, how can I save state of UICollectionViewCell. For example: I have cells with UIWebView and when I dequeueReusableCellWithReuseIdentifier:forIndexPath: returned wrong cell, not for this indexPath and after it UIWebView content will reloaded for correct indexPath with twitches. Thanks!- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {NewsCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuse<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/e34a1269651700653782cc06a61cbfa4?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nRynoB<br \/>\nobjective-c ios uicollectionview uicollectionviewcell<br \/>\nI&#8217;m currently facing a strange issue with UICollectionViewCell when adding subviews to it but only during certain situations.Here is the scenario:I have a &#8220;container&#8221; view which conforms to a very specific protocol (ADGControl) with a nested view, typically a UIKit control subclass I.e MyCustomTextField : UITextField for custom controls.The &#8220;container&#8221; view exposes a property called &#8220;innerControlView&#8221; which holds a strong reference to the custom control which is what I&#8217;m trying to add as a sub v<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/e5a430d0f87e232b78f5ef3c3a8f038d?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nAndr\u00e9 Dion<br \/>\niphone ios objective-c uicollectionview uicollectionviewcell<br \/>\nI am using MVC pattern in that there is one view controller in which i have UICollectionview, which is loaded with UICollectionViewCell.xib.For example I have &#8216;A&#8217; as View Controller which get data from Singleton class &#8216;B&#8217; which in turns calls the respective class at runtime eg:- &#8216;C&#8217; and &#8216;D&#8217; class which returns UICollectionViewCell object to &#8216;A&#8217; view controller. Is this possible and I want that cell to be loaded one by one in UICollectionView?<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/d21841b1e1ae468e4b467aae2ec7bfa6?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nHironobu Sano<br \/>\nios uicollectionview uicollectionviewcell fragmentpageradapter container-view<br \/>\nI created containerview. I want to paging in the horizontal mode of UICollectionView it.(Like a FragmentPager of Android) However, error occurs if you put in the ContainerView UICollectionViewCell. (Storyboard: error: Illegal Configuration: Container Views cannot be placed in elements that are repeated at runtime) What do I do now?<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/d6d4ef68503cb559586925f1ffbdf816?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nGlauco<br \/>\nios uicollectionview uicollectionviewcell<br \/>\nI have a custom UICollectionViewCell whose content is also a collection and I would like to use UICollectionView to display its content. Is this possible? How would I accomplish this? I made the custom UICollectionViewCell also inheriting from UICollectionViewDataSource and define a UICollectionView internal property but things are not working as expected. Any idea?<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/81d2c0d1e169fccb63893706ef70db19?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nrmaddy<br \/>\nios objective-c uicollectionview uicollectionviewcell<br \/>\nI followed this tutorial to create a UICollectionView. I copied their code with no problem, however when I tried it, it crashes- (void)viewDidLoad {[super viewDidLoad];gridImages = [[NSMutableArray alloc]init];[gridImages addObject: @&#8221;test.jpg&#8221;];[gridImages addObject: @&#8221;test.jpg&#8221;];[gridImages addObject: @&#8221;test.jpg&#8221;];[gridImages addObject: @&#8221;test.jpg&#8221;];[gridImages addObject: @&#8221;test.jpg&#8221;];}- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{retu<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/d89bc924aadf5da4375fde29f4c2e476?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nmelps<br \/>\nios uicollectionview uicollectionviewcell<br \/>\nI have a simple UICollectionView based app &#8211; one UICollectionView and a NSMutableArray based data model for simplicity.I can delete cells with no problem via the didSelectItemAtIndexPath: delegate method:-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{[self.data removeObjectAtIndex:[indexPath row]];[self.collectionView deleteItemsAtIndexPaths:@[indexPath]]; }However, I&#8217;m trying to add a delete option via a UIMenuController in a UICollect<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/mFbV7.jpg?s=32&amp;g=1\" \/><br \/>\nRameez Hussain<br \/>\nobjective-c ios7 uicollectionview uigesturerecognizer uicollectionviewcell<br \/>\nI 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 0x17dbc970I 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 userInteraction<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/2807e279ada3bb19bad41a54af66114d?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nNick<br \/>\nobjective-c performance uicollectionview rubymotion uicollectionviewcell<br \/>\nI have a UICollectionView in my app, and each cell is a UIImageView and some text labels. The problem is that when I have the UIImageViews displaying their images, the scrolling performance is terrible. It&#8217;s nowhere near as smooth as the scrolling experience of a UITableView or even the same UICollectionView without the UIImageView.I found this question from a few months ago, and it seems like an answer was found, but it&#8217;s written in RubyMotion, and I don&#8217;t understand that. I tried to see how to<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/c0f1432bd6834661f8e16d0397f43b00?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nAvner Barr<br \/>\nios objective-c uicollectionview uicollectionviewcell xcode-instruments<br \/>\nI have a gallery in my app utilizing a UICollectionView. The cells are approximately 70,70 size. I am using ALAssets from the ALAssetLibrary in the gallery which I have stored in a list. I am using the usual pattern for populating the cells:-(UICollectionViewCell*)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {mycell = [collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];mycell.imageView.image = [[UIImag<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/81d2c0d1e169fccb63893706ef70db19?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nrmaddy<br \/>\nios uicollectionview uicollectionviewcell<br \/>\nApp crash and give following error message Terminating app due to uncaught exception&#8217;NSInternalInconsistencyException&#8217;, reason: &#8216;-[UICollectionViewController loadView]loaded the &#8220;RecipeCollectionViewController&#8221; nib but didn&#8217;t get a UICollectionView.<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/484bd7f2c37e220a228466ca29be8185?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nnot really Jake<br \/>\nios constraints uicollectionview uicollectionviewcell sdwebimage<br \/>\nI have a UICollectionView with a lot of cells that contain a UIImageView. I use SDWebImage to load images into them.When I scroll really fast, the application crashes. LLDB doesn&#8217;t do me any good, and the device gives me the following crashlog: myapp crashlog (.txt)All I can draw from this is that an enumeration crash occurs when updating constraints. This, however, isn&#8217;t directly triggered by me. Can anybody give me a hint on how to proceed from here? I can&#8217;t get much sensible information out o<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/c46e6ee7eb060b64f26e60979f76dd0e?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nverma<br \/>\niphone ios uicollectionview uicollectionviewcell uicollectionviewlayout<br \/>\nI have a collections view and the view works fine when I load the data initially, but crashes when I try to reload it. take a look at the reload thats happening on the method &#8211; scrollViewDidEndDeceleratingand the error is -[FeedCollectionViewCell release]: message sent to deallocated instance 0x800d6f70here is the code. This the Controller@interface MyViewController : UIViewController &lt;UICollectionViewDataSource,UICollectionViewDelegate,UICollectionViewDelegateFlowLayout, UIScrollViewDelega<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/a55f5a2411478fc1d107a08bbcba7ee4?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nMaVRoSCy<br \/>\nnsindexpath uicollectionview uicollectionviewcell<br \/>\nHello I am having trouble getting a custom object at the index path of the UICollectionView&#8230; Below is my code.I am getting the crash [Player firstName:]: unrecognized selector sent to instanceAny suggestions?- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath { BenchCollectionCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:CollectionCell forIndexPath:indexPath]; [cell setFrame:CGRectMake(0, 4, 120,<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/169df2463d7e6d7159f39194b21e2f24?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nKrunal<br \/>\nios iphone ipad uicollectionview uicollectionviewcell<br \/>\nI have implemented Custom CollectionView but when i run my app it crashes and shows, ERROR : [UICollectionViewCell Mylabel]: unrecognized selector sent to instance&#8230;Here is my code snippet,- (void)viewDidLoad {[super viewDidLoad];[self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@&#8221;cvCell&#8221;]; }- (NSInteger)collectionView:(UICollectionView *)view numberOfItemsInSection:(NSInteger)section { \/\/ No of Rows..CGSize result = [[UIScreen mainScreen] bounds].size;i<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/49c587d3e27b2d2f5641aab9d9dcd365?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nHighFlyingFantasy<br \/>\nios uicollectionview uicollectionviewcell<br \/>\nI&#8217;m trying to use a UICollectionView in collaboration with a UICollectionViewCell to display thumbnails of images. The UICollectionViewCell&#8217;s used in my app are custom (simplistic) subclasses: #import &#8220;MemeCell.h&#8221;@implementation MemeCell- (id)initWithFrame:(CGRect)frame {self = [super initWithFrame:frame];if (self) {} return self; }-(void)setThumb:(UIImage *)image {if (_thumb != image) {_thumb = image;}_imageThumb.image = _thumb; }@endAnd in the File&#8217;s Owner of my UICollectionView, I use:- (UIC<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/1ef049ae5a862de59df4403eb22d1821?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nThe Kraken<br \/>\nios properties uicollectionview uicollectionviewcell<br \/>\nI have a single view controller acting as both the dataSource and delegate for a UICollectionView. &#8211; (UICollectionViewCell *)collectionView:(UICollectionView *)cv cellForItemAtIndexPath:(NSIndexPath *)indexPath {PhotoCell *cell = [cv dequeueReusableCellWithReuseIdentifier:@&#8221;PIC_CELL&#8221; forIndexPath:indexPath];UIImage *photo = [UIImage imageWithData:[[_fetchedImages objectAtIndex:indexPath.row] valueForKey:@&#8221;picture&#8221;]];if (photo) {cell.photo = photo;}return cell; }In the above method I instantiate<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/2bb115ad0fc9b20f1cc2a20f57774b40?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nPiero<br \/>\niphone ios uicollectionview uicollectionviewcell<br \/>\nI&#8217;m trying to create a UICollectionViewCell subclass with linked a xib, I have do this: I have create a new xib file and I have add a UICollectionViewCell in it, then I have create this subclass file:@interface MyCell : UICollectionViewCell@property (weak, nonatomic) IBOutlet UILabel *label; @endAlso I have linked in the file owner custom class the MyCell class in interface builder, and I have added a UILabel, then in my UICollectionView viewDidLoad I do this:[self.collectionView registerClass:[<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/BmvWU.jpg?s=32&amp;g=1\" \/><br \/>\nVarunJi<br \/>\nuicollectionview uicollectionviewcell<br \/>\ni am creating a CollectionView app. where i am fetching data from server through JSON string. and my work flow is as followCreated Collection View Cell as ProjectVCollectionViewCell.h, .m, .xib.Code for .h is &#8211; @interface ProjectCollectionViewCell : UICollectionViewCell@property (weak, nonatomic) IBOutlet UIImageView *projectImage;@property (weak, nonatomic) IBOutlet UILabel *projectLabel;@endCode for .m is default and synthesized the above 2 variables. and .xib has Collection View Cell with Ima<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/e3efae35534cf38ade6b5935635aa8e1?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nCivatrix<br \/>\nios uicollectionview autolayout uicollectionviewcell<br \/>\nI&#8217;m subclassing a UICollectionViewCell and doing all the layout in code with auto layout. This is my init method:- (id)initWithFrame:(CGRect)frame{frame = CGRectMake(0, 0, 403, 533);if (self = [super initWithFrame:frame]) {self.translatesAutoresizingMaskIntoConstraints = NO;PBCardPricesViewController *pricesView = [[PBCardPricesViewController alloc] init];[self addSubview:pricesView.view];UIImageView *background = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@&#8221;CardBackground&#8221;]];[self a<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/4beIK.png?s=32&amp;g=1\" \/><br \/>\nMicRO<br \/>\nios ios6 uicollectionview uicollectionviewcell<br \/>\nUsing a UICollectionView, I&#8217;m trying to add another UICollectionViewCell. This first code shows the first Cell and it runs fine. The problem occurs when I&#8217;m trying to add another UICollectionViewCell.static NSString *identifier = @&#8221;Cell&#8221;; \/\/ Default CellsUICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath]; UIImageView *illustrationImage = (UIImageView *)[cell viewWithTag:100]; illustrationImage.image = [UIImage imageNamed:[stackI<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/c7Et8.png?s=32&amp;g=1\" \/><br \/>\nflexaddicted<br \/>\niphone ios cocoa-touch uicollectionview uicollectionviewcell<br \/>\nI&#8217;m trying to setup an UICollectionView. At first I was using the basic UICollectionViewCell, it was working well, the cells were being displayed.Then I created my own collectionViewCell (subclassing UICollectionViewCell), to be able to display an image in the cell. I linked the custom cell in the Storyboard with an identifier and I also specified the right class for it. However, I keep having this error, and I don&#8217;t understand why: *** Terminating app due to uncaught exception &#8216;NSInternalIncon<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/62890f2b038af75609ca5095be409338?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nXman<br \/>\nios uicollectionviewcell<br \/>\nIm following a tutorial that connects to the web to fetch data and puts it into core data. Ive set up my UICollectionView with a cell with its identifier but when i run the project i get this in the console:2013-06-23 20:26:17.051 UICollectionView[912:c07] Unknown class MyCellin Interface Builder file. 2013-06-23 20:26:17.055UICollectionView[912:c07] CoreData: error: Serious application error. An exception was caught from the delegate ofNSFetchedResultsController during a call to-controllerDidC<\/li>\n<\/ul>\n<p>Web site is in building<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Zaakk objective-c ios uiwebview uicollectionview uicollectionviewcell Please help me, how can I save state of UICollectionViewCell. For example: I have cells with UIWebView and when I dequeueReusableCellWithReuseIdentifier:forIndexPath: returned wrong cell, not for this indexPath and after it UIWebView content will reloaded for correct indexPath with twitches. Thanks!- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {NewsCollectionViewCell *cell = [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4369","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/4369","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=4369"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/4369\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=4369"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=4369"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=4369"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}