uicollectionviewcell

问题 I'm trying to set an image for a button's normal state which is located in a collectionView cell. When the button is pressed the image changes. The problem is every four cells it repeats the same image as the original cell when the button is pressed. Is there a way to not have it repeat itself and when the button is pressed its only for that individual cell? Here is the code: class FavoritesCell: UICollectionViewCell { var isFavorite: Bool = false @IBOutlet weak var favoritesButton: UIButton!

问题 This question already has answers here : Xcode - How to fix 'NSUnknownKeyException', reason: … this class is not key value coding-compliant for the key X" error? (68 answers) Closed 4 years ago . I'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; @end

问题 I have created a UICollectionViewCell by nib and added a button inside it and created a .h and .m files added the class to the nibs file's owner .then wrote a button action in the .m connected it via outlet. The collection view is populating fine ,but cannot get the buton action triggered. I think the delegate for collection cell is called. How can i get the button action? 回答1: I had this problem as well. No subviews would receive touch events. While Scott K's workaround does work, I still

问题 I have a UICollectionView, that loads cells from reusable cell, which contains label. An array provides content for that label. I can resize label width depending on content width easily with sizeToFit. But I cannot make cell to fit label. Here's the code - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. arrayOfStats = @[@"time:",@"2",@"items:",@"10",@"difficulty:",@"hard",@"category:",@"main"]; } - (NSInteger)collectionView:

问题 I am attempting to update a single cell inside a UICollectionView , specifically I am just trying to update an image in that specific cell detonated by cell.imageView . [self.collectionView reloadData] is not really an option because it makes the whole collection view flash. [self.collectionView beginUpdates] is not a thing in a UICollectionView it seems. I understand I may be able to use: [self.collectionView performBatchUpdates:^{ //do something } completion:nil]; I am not exactly sure what

问题 What's happening Currently I have an application that uses two UICollectionViews inside a UITableView . This way I create a Pulse News look like application. My problem with this is that sometimes the 6th and 11th row disappears completely, leaving a blank space where it should be the cell. I wouldn't actually mind, if all the cells were like this (and this way I could assume that I wasn't doing things correctly), but the thing is, is just happening with those specific ones. My theory The 6th

问题 I'm working on a project which uses UICollectionView to display data which may or may not have an image. The way I'm using is to check if the image url is not null, then add an ImageView onto the cell. - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath { if (question.picture != (id)[NSNull null]) { //add AsyncImageView to cell imageView.contentMode = UIViewContentModeScaleAspectFill; imageView.clipsToBounds = YES;

问题 how do we create a UICollectionViewLayout like the SnapChat's stories? Any ideas please? I'd like to have a solution without external library. 回答1: Based on a precedent answer adapted to your issue: -(id)initWithSize:(CGSize)size { self = [super init]; if (self) { _unitSize = CGSizeMake(size.width/2,80); _cellLayouts = [[NSMutableDictionary alloc] init]; } return self; } -(void)prepareLayout { for (NSInteger aSection = 0; aSection < [[self collectionView] numberOfSections]; aSection++) { /

问题 how do we create a UICollectionViewLayout like the SnapChat's stories? Any ideas please? I'd like to have a solution without external library. 回答1: Based on a precedent answer adapted to your issue: -(id)initWithSize:(CGSize)size { self = [super init]; if (self) { _unitSize = CGSizeMake(size.width/2,80); _cellLayouts = [[NSMutableDictionary alloc] init]; } return self; } -(void)prepareLayout { for (NSInteger aSection = 0; aSection < [[self collectionView] numberOfSections]; aSection++) { /

问题 I read similar questions such as how to have multiple collection view in multiple table view cells and I connected my collection views cells and use identifier names for them but I don't know why I receive this Error: * Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'could not dequeue a view of kind: UICollectionElementKindCell with identifier extera_infoCollectionViewCell - must register a nib or a class for the identifier or connect a prototype cell in