How does UICollectionView work?

By Lexie Tanner 4 years ago

How does UICollectionView work?

The collection view presents items onscreen using a cell, which is an instance of the UICollectionViewCell class that your data source configures and provides. In addition to its cells, a collection view can present data using other types of views.

How do I make my UICollectionView scroll horizontal?

Add a UICollectionView to your view controller using the story board or programmatically. Add constraints to the newly added UICollectionView. It’s important to have a fixed height for this collection view as it will scroll in one direction. Set the scroll direction to horizontal.

What is the difference between Collectionview and Tableview?

Collection view can represent cells in multiple columns and rows. Table view presents data in multiple rows arranged in a single column, the cell design is fit as a row. However, collection view can create rows and columns, it can design cells in various ways, even if they are not necessarily rows.

How does swift implement UICollectionView?

How to make a UICollectionView using Interface Builder (IB) in Xcode?

  1. Drag a UICollectionView object to your view controller.
  2. Set proper constraints on the collection view.
  3. Set dataSource & delegate of the collection view.
  4. Prototype your cell layout inside the controller.
  5. Add constraints to your views inside the cell.

How do you center horizontally in UICollectionView cells?

don’t forget to :

  1. set the view in the cell contentview to a fixed width, centered in it’s container without trailing and leading constraint.
  2. remove any minimum spacing for cells and lines in the inspector of the CollectionView, set them to 0 each.

Can Tableview scroll horizontally?

6 Answers. This should solve your problems. For anyone who runs across this question, contrary to some of the other advice provided, horizontal scrolling of a UITableView is possible and is not a violation of the HIG.

What does uicollectionviewflowlayout do in iOS?

iOS provides a layout class called UICollectionViewFlowLayout that allows line-based layouts such as a grid to be created with no additional work. Also, custom layouts can also be created that allow any presentation you can imagine. UICollectionView Basics

Where does uicollectionview get its data from?

The code snippet below changes the background to red in the samples CircleLayout class: As with other parts of iOS, such as UITableView and MKMapView, UICollectionView gets its data from a data source, which is exposed in Xamarin.iOS via the UICollectionViewDataSource class.

What are the three categories of uicollectionview?

The APIs that comprise UICollectionView can be slotted into three distinct categories– Data, Layout and Presentation. One of the novel concepts UICollectionView was built on was the separation of concerns between the data, or the “what,” from the layout, the “where” content is being rendered.

What are the new features in iOS 14?

For iOS 14, we built on these modern APIs and introduced new features across all three of these API categories with enhancements to Diffable Data Sources, Compositional Layout and cells. First up, let’s chat about enhancements to Diffable Data Source.