collection-view | UICollectionView for the web | Grid library

I am new to Swift and iOS. I am creating a UICollectionView programmatically and every thing is working fine but due to the dequeuing of the cell the labels in the cells are overlapping when I scroll the collection-View. How should I solve this ?

Here is the pic after scrolling some times from left to right

Here is my code:

Based on https://github.com/pgpt10/DragAndDrop-CollectionView

By using

I have made a collection view with cells arranged in rows in columns using a great tutorial. I have added a button to a toolbar in the main view controller that calls collectionView.reloadData() as I want a user to be able to edit values which will in turn update the datasource and then reload the collection view to show the updates.

Running this on a simulator it works, but if any scrolling takes place it causes this crash *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayM objectAtIndex:]: index 0 beyond bounds for empty array'. If no scrolling has taken place then calling collectionView.reloadData() works. I can't find where this empty array is which is causing the crash. I have tried printing all the arrays that are used in the code in the console but none appear to be empty. Have tried commenting out various lines of code to try and narrow down where the problem is, it seems to be something in the override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? block. I have also tried reseting the collection view frame co-ordinates to 0 before reload data is called but that also didn't work. Have been stuck going round in circles for a few days which no luck. Any suggestions as to where I am going wrong would be hugely appreciated! My code so far is below (please excuse the long winded explanation and code);

View Controller

I am following this blog for implementing the Collectionview in my tvOS application. In this blog the data is adding on the CityViewDatasource class. Static datas are added on this blog like below:

I am trying to connect a Button and Collectionview in my tvos application (Xamarin - Visual Studio Mac). I need to show the collectionview when tap the button.

I am following this blog for the implementation of collectionview in my project. The 6th step on this blog tells how to connect the Button and collectionview , Control-drag from the Button to the Collection View Controller and select Push from the popup:

Screenshot

I tried a lot by dragging the Button to Collectionview, but there is no popup and they are not getting connected. I am a beginner on tv os application development. So anybody please explain this mechanism? If provide a gif file, it will be easy. :)

I have spent weeks trying to get this to work and have looked at many different suggestions on here, Apple developer forums, Google etc. and am still pulling my hair out. Any help would be greatly appreciated.

I have a ViewController that contains a TableView. It is not a full-screen tableView.

The tableView is built with customTableViewCells that each holds a CollectionView. The problem I have is that the self-sizing collectionView and the self-sizing tableView rows just don't seem to work. I've found a few options online but they only seem to partially work.

This is what I get when it initially runs:

I'm including a link to the project file as that's probably easier than copying code into here: https://www.dropbox.com/sh/7a2dquvxg62aylt/AACK_TjDxT9eOShZaKi7vLYga?dl=0

Some of the online 'workarounds' don't work in all cases - e.g. if you tap one of the buttons inside the CollectionView, it is removed and the collectionView (and subsequently the TableView) should resize but again I can't get this to consistently work.

Some of the solutions I've tried:

UICollectionView Self Sizing Cells with Auto Layout

UICollectionView inside a UITableViewCell -- dynamic height?

Dynamic height for a UITableView based on a dynamic collection view

Auto-sizing UITableViewCell which contains UICollectionView

Any help would be greatly appreciated.

I'm working on a project which uses a custom FlowLayout which I cannot really touch but I do need to expand the sidth of the cell one a user has tapped on it so it takes the full width of the CollectionView boounds AND also persist that change throughout the viewController's lifecycle regardlee of how mych the CollectionView has been scrolled.

Right now I have managed to have the cell expand on tap but if you scroll enough through the collecion view, if you scroll back the cell is scaled back to it's original size. Now I think this is happening because of the cell reuse but I have no idea on how to model this behaviour.

Here's some more details:

I have a XIB for the Cell

in sizeForItem I have :

I have UICollectionViewCells that have only one UIImageView. I am using RxSwift for the project. The delegate is set in the Main.storyboard, and the datasource is set by the RxSwift. I need to remove the spaces between the cells, but having trouble with that. The methods from this thread are not working:

Aligning collection view cells to fit exactly 3 per row

I tried both answers but nothing happens.

Here is the UIViewCollectionControllers' code:

I am using this tutorial to implement a pull-to-refresh behavior with the RefreshControl. I am using a Navigation Bar. When using normal titles everything works good. But, when using "Prefer big titles" it doesn't work correctly as you can see in the following videos. Anyone knows why? The only change between videos is the storyboard check on "Prefer Large Titles".