CollectionView | A UICollectionView Layout graph visualization | Data Visualization library

I am very new to swift. So TLDR I have a collection view which I want to update after I click a button. I have seen various solutions and everyone suggesting to put collectionView.reloadData but I am not understanding where to put this line in my code. Any help will be appreciated. This is the view controller:

I try to populate a Labeltext inside a Listview in XAML. But i want the Labeltext coming from the AppResources. I am shure i forgot somewhere a tiny lil detail like a using or namespace.

Anway, here's the XAML:

I am trying to make a simple animation using constraints. When the button is pressed, the following occurs:

I created two variables for height and boolean

I would like to call a function when a cell of a Collection View (created in cs) were tapped.

Here is the code:

I have a really large collection, 2000++ items, of images in SVG that users need to filter as they wish. The filtering is done via a text field, so I am doing a simple ObservableCollection filter with LINQ:

I have an issue where [unowned self] was changed to [weak self] within the dataSource function used for a CollectionView using RxDataSource due to a memory leak. I now received a crash from returning a blank collectionViewCell that doesn't have a reuseIdentifier. I understand that I need to return a cell with a reuseID.

What changes are suggested to deal with this properly?

Someone suggested making collectionView.dataSource = nil in viewDidLoad() would fix this...

I was thinking instead of returning CanvasItemCollectionViewCell() in the 'guard' check, I return collectionView.dequeueReusableCell(for: indexPath, cellType: CanvasItemCollectionViewCell.self), but if self = self fails wouldn't that mean the collectionView is garbage?

This is a difficult problem to debug because this crash doesn't happen consistently.

Here are some screenshots to portray what I am looking at.

I have an iOS view consisting of a collectionView with a headerView. The view displays fine, but when I rotate the device (iPad), the header elements get duplicated and don't fit correctly. The output window shows the following

I have a UICollectionView of rectangular cells with mostly uniform size laid out with a stock UICollectionViewFlowLayout.

I am trying to implement keyboard arrow navigation in the Catalyst version of the App. Left and right are no problem. Here is a fully laid out example:

I am filling a ObservableCollection with a response an api of reports, with the following data from an array in Json format: