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Questions tagged [diffabledatasource]

92 questions
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0 answers

Custom Collection View layout: 'Invalid parameter not satisfying: self.supplementaryViewProvider'

I am using two collectionViews in my view controller. 1 has a custom layout and custom attributes for its supplementary views. Here is the view controller: class ProgressViewController: UIViewController { private lazy var data = fetchData() …
BigBoy1337
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Diffable Data Source - Reload Header

What are the ways in which a UICollectionViewDiffableDataSource header can be reloaded? I have a collection view with a header that displays user details, and rows that display posts, the model is struct PostUser { var user: User var post:…
mickeysox
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*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Fatal: supplied identifiers are not unique.' ***

Hello everyone ‍♂️I'm parsing the following JSON to a UITableView using a UITableViewDiffableDataSource for nice searching animations. The JSON : https://www.pathofexile.com/api/trade/data/items And here's the repo :…
Laurent
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2 answers

How to add Header Name in UITableViewDiffableDataSource

I try to add header title for each section in UITableView, but in this case it's UITableViewDiffableDataSource and I don't have any idea where I should do that. A part of my code: private func prepareTableView() { tableView.delegate = self …
PiterPan
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How to stop UICollectionViewDiffableDataSource to scroll the collection view while we apply snapshot?

Is there any way that I can make UICollectionViewDiffableDataSource stop scrolling collection view while we apply snapshot? I am using this library: https://github.com/ra1028/DiffableDataSources I have a situation where I want to keep the collection…
Gaurav Parvadiya
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How to push DiffableDataSourceSnapshot update inside main thread?

Im new to UITableViewDiffableDataSource, When I prepare the DiffableDataSourceSnapshot and apply? I can see that update is triggering from Dispatch queue: com.apple.uikit.datasource.diffing Im expecting all UI operations has to be in the…
Rajasekhar Pasupuleti
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NSDiffableSnapshot causes collectionview's cell registration to be re-called even without any changes to the data

I have a problem with NSDiffableDataSource. I have created this basic example containing a UICollectionView with a single item showing a random number: import UIKit class ViewController: UIViewController { enum Section { case main …
SwiftedMind
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1 answer

UICollectionViewDiffableDataSource optional sections

I'm trying to implement a collection view with the diffable data source. I have some optional advertisment which I would like to put in a separate section of the collection view (for specific layouting etc.). My sections look like this: enum…
lawicko
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1 answer

Crash number of items in section 0 when there are only 0 sections in the collection view

I want to learn using UICollectionViewDiffableDataSource using Pinterest Layout, but when I try to running my simulator. it crash and give me a message request for number of items in section 0 when there are only 0 sections in the collection…
ferryawijayanto
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UICollectionView selection and delete issue with diffable data sources

I'm at my wits end here, but I have a weird issue with my collectionview and trying to select multiple items. I have an edit button, that when I hit it it triggers an isEditing function. When a cell is tapped, it changes the bool on isSelected.…
Frank Foster
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2 answers

NFetchedResultsController delegate method didChangeContentWith is not called when deleted an item using UIDIffableDataSource tableview

I am trying to implement my existing coredata project using the UITableViewDiffableDataSource. My tableview is coupled using the NSFetchedResultsController and the corresponding delegate methods. I am able to list the data in the tableview using…
Arun Kumar
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Passing UIView to Reusable cell using UIContentConfiguration and UIContentView

I am trying to add a UIView programatically to a UIContentView, using the UIContentConfiguration. In the configure method I add the custom view as a Subview. I also keep a weak reference to it so I can remove it if the configuration says so. But for…
Tudor Neagu
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Diffable Data Source With Multiple Sections And Objects

I have a Data Source with multiple sections and objects. When creating my Data Source I can only access the section or the item type. I need to access both, is there a cleaner way to do this? My model is below; enum BrowseSectionType: Hashable { …
David Henry
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Is the Diffable DataSource queue created on whatever thread it we created the datasource on?

I'm trying to understand diffabledata source threading in more detail. In my code I create a diffable data source on the main thread. This data source uses a backing storing. The data for the backing store comes from the following getter method. …
dubbeat
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how to resolve DiffableDataSource mulipleCell crash (iOS 13)

I encountered an error during development. The minimum target is iOS 13. You want to give different cells for each section using DiffableDataSource. I don't know why there's an error. I need your help. minumum target: iOS 13.0 * errorCode Thread…
iOS-Dev-Junior
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