All Questions
Tagged with ios uicollectionview
11,153 questions
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35
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mimic photos app collectionview spacing when not scrolling
Please use this gif as reference for expected result
Work is in progress and public in this github
I'm using default UICollectionViewFlowLayout and set custom sizing for the selected cell when ...
- 1,932
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1
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70
views
Showing random number of items per line
I have 15 categories that I want to show on the screen. I want to do the following
Create a box for each category so that the label fits in that box
Render as many items on the screen so that it fits....
- 8,649
-1
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23
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NSCollectionLayoutItem created with invalid combination of spacing and size specified
I am using UICollection View Compositional Layout to calculate the items and groups
i encountered this error
Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '<...
- 59
-1
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25
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Calculating sizeForItemAt for UICollectionViewDelegateFlowLayout
I've been messing around with NASA's Astronomical Picture of the Day API and am attempting to show the images in a collection view with three items per row. As expected, I'm using ...
- 447
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1
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44
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How to use header with dynamic heigh / AutoLayout in UICollectionView in iOS 18?
Although I found several tutorials / questions about dynamically sizing cells UICollectionView I was not able to achieve the same for the header view.
TL;DR How to autosize a UICollectionView header? ...
- 18.6k
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1
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122
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UI errors with downloading files
I'm using this code to download my files and display progress in a my collection view item. But if I hide the app while some items are downloading and after open app again, the progress in the item ...
- 89
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258
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UICollectionView Crash: Expected dequeued view to be returned - Need Help Fixing Cell Reuse Issue
I'm facing a recurring crash in my iOS app with a UICollectionView. The crash message is as follows:
Error Message:
Thread 1: "Expected dequeued view to be returned to the collection view in ...
- 11
2
votes
2
answers
119
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How to show progress in collection view item?
I'm using UICollectionViewCompositionalLayout with UICollectionViewCell class. Also I have a DownloadManager class. I want to download a file after clicking a cell. I'm using didSelectItemAt method to ...
- 89
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90
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Can I use UICollectionView to render sub-sections within sections?
I've been digging around for quite a while (including an hour with ChatGPT) to try and figure out a way to achieve this UI using UICollectionView:
The iOS dev in me who has been doing this for 10+ ...
- 1,153
1
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1
answer
183
views
Problem with height calculation automatically to UICollectionView inside a UITableViewCell
Good?
I have a problem with the implementation of a UICollectionview intro a UITableViewCell, because the height calculation of this component does not work properly, even though using ...
- 60
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118
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UICollectionViewDelegate method not called in iOS 18 for item movement
I'm experiencing an issue with a UICollectionViewDelegate method not being called in iOS 18, while it works fine in iOS 17.5 and earlier. I'm using Xcode 16.0.0 for development.
The Problem
In my app, ...
- 11
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votes
1
answer
118
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Is there any way to using UICollectionViewCell's self-sizing only in vertical direction?
I am writing a demo about the difference using compositional layout & traditional flow layout with UICollectionView.
I found that if I want to set the cell’s width equal to the UICollectionView’s ...
- 2,801
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votes
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21
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UICollectionView is unresponsive during cell resize animations despite .allowUserInteraction option
I'm experiencing an issue with UICollectionView where the cells become unresponsive to touch events during animations, even though I'm using the .allowUserInteraction option. I've created a minimal ...
- 446
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40
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Collectionview compositional layout with estimated item height with large dataSource hanging issue
If we give the low number of items in a dataSource it won't cause the hanging the issue. If we give more than 10000+ data you can see the hanging issue.
import UIComponents
class TextViewCell: ...
- 61
-1
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1
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30
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CRASH: Swift UIKit Dictionary _NativeSet.startIndex.getter
This crash is happening in production and is related to UICollectionView.CellRegistration or dequeueConfiguredReusableCell or UIViewController being deallocated.
Here is the report:
Crashlytics - ...
- 128