How to implement guide with uicollectionview cell not redrawing after data update in objective-c
I'm upgrading from an older version and I'm working with an scenario where my `UICollectionView` cells are not updating their content after I modify the underlying data source. I am using Objective-C with iOS 14 SDK, and I've confirmed that my data source array is being updated correctly, but the cells don't seem to reflect those changes visually. I attempted to call `[self.collectionView reloadData]` after updating the array, but it didn't solve the question. I suspect it might be related to the way I'm configuring my cells in the `cellForItemAtIndexPath` method. Here’s a snippet of the relevant code: ```objective-c - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath { MyCustomCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"MyCustomCell" forIndexPath:indexPath]; MyModel *model = self.dataArray[indexPath.item]; cell.titleLabel.text = model.title; // More configuration here... return cell; } - (void)updateData { [self.dataArray removeAllObjects]; [self.dataArray addObjectsFromArray:newDataArray]; [self.collectionView reloadData]; } ``` I also checked that the `collectionView` is not nil when I call `reloadData`. Additionally, I'm using a custom layout, but I don't think that's causing the scenario since I validated it works correctly with static data. However, I notice that the cells seem to maintain their previous content even when the data changes. Has anyone experienced this scenario or have suggestions on what else I might be missing? The project is a REST API built with Objective-C. Has anyone else encountered this? I'm working with Objective-C in a Docker container on macOS. I'd really appreciate any guidance on this.