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Questions tagged [uicollectionviewflowlayout]

209 questions
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UICollectionViewDelegateFlowLayout has black portions/areas when adding views to it

I want to build kind of a split screen. I used UICollectionViewFlowLayout for this. When I add and remove UIViews to and from the screen I want the screen to be split into portions according to the number of views in the current screen. So wrote the…
Janith Ganewatta
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Carousel effect for Vertical scrolling UICollectionView

How to achieve Carousel Effect for a vertically scrolling UICollectionView? For example, we have 10 UICollectionViewCells aligned vertically in UICollectionView, assume if we are seeing the the 5th UICollectionViewCell, then 4th and 6th…
Harsha
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Self Sizing CollectionView cell not work properly after reload data

I am creating a collectionView that can have multiple sections with a self-sizing cell. it works nicely on the initial layout. but after reload, I encounter three problem Scrolling become choppy cell size changed and cell overlap with each…
Bhavesh.iosDev
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UICollectionView doesn't show footer when using a custom flow layout

I have a UICollectionView, with header and footer enabled: The height for the footer is set here: func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForFooterInSection section:…
narner
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UIViewAlertForUnsatisfiableConstraints errors when working with dynamic header size UICollectionView

Intro I am trying to give the header cell of my collectionView a dynamic cell sizing. The cell that is used as a header is also used as a "regular" cell in another collectionView. In there, working with a dynamic cell sizing works just fine. This is…
linus_hologram
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Click on specific element in UICollectionViewCell not called(instead ItemSelected fired from Source) Xamarin.ios

I have a CollectionView in my Xamarin.iOS projet. I've a button inside my UICollectionViewCell and I'd like to have TouchDown on my button. But when I click on this button, ItemSelected fired and not my TouchDown event handler (the global touch on…
ali
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UICollectionView with two UICollectionViewFlowLayout

I'm working on a project in iOS, Swift. How Can we assign one collectionView with two different flow layout? Here I need my UICollectionViewCell to look like a stack-card, for that, I'm using CardsCollectionViewLayout(external pod…
Hilaj S L
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In iOS 12, when UICollectionView is created using Self Sizing cells with constraints, upon reload layout has wrong height until I scroll

I have a weird issue in iOS 12 when using solution as explained here. It works great when collection view loads for first time, however when I try to reload the collection view using either collectionView.reloadData() or…
Rajan Maharjan
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Fix UICollectionView cells in screen dynamically

I'm working on an tvOS app, I want to fix all cells in tv screen without scroll vertically or horizontally. Here cells count will count is dynamic, that's the main problem. I want to set all cells like this For example: If cell count is 4 If cell…
Naresh
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Auto sizing collection view cell size ignores auto layout on first display

Situlation I made a horizontal scrolling collection view with UICollectionViewFlowLayout.automaticSize. The collection view has height of 40 The cell has height of 40 which I set by autolayou on init. Problem The problem is that ONLY cells displayed…
Bigair
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Height on UICollectionViewCell error when reload

I am basing the question as a branch of this question The autosize on ViewCells works perfect. But when I reload my CollectionView, the height return 1. Code as follows. extension SaleViewController: CollectionViewFlowLayoutDelegate{ override…
Amg91
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UICollectionview custom layout: some indexes have more visible cells than others?

I'm facing a weird issue that I can't seem to figure out or find anything about online. So I'm trying to replicate the Shazam discover UI with a UICollectionView and a custom UICollectionViewFlowlayout. So far everything is working pretty well, but…
JoniVR
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Setup a collectionView with "tag"-like cells

I've been working on with a custom UICollectionViewFlowLayout to adjust the spaces between the cells so I can get a nice flow in my collectionView. But with my current code I can't figure out how I can adjust the cell sizes without "breaking" rows…
Jacob Ahlberg
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UICollectionView cells lining vertically instead of grid

I am trying to create UICollectionView programatically, and my cells are getting stacked vertically instead of a grid form. My code is: let layout:UICollectionViewFlowLayout = UICollectionViewFlowLayout() let screenSize: CGRect =…
Pritesh
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How to left align UICollectionViewCells when scrolling horizontally?

I am trying to create a UICollectionView with cells that have varying widths but constant heights. The UICollectionView has 3 rows and scrolls horizontally. Each cell should have 8px between the next cell to it's right and the row below. I have set…
Josh
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