What is the difference between UITableView and UICollectionView?
UITableView is the base mechanism for displaying sets of data on iOS. UICollectionView is a much more powerful set of classes that allow modifying almost every aspect of how your data will appear on the screen, especially its layout but also other things.
How do I use UICollectionView?
How to make a UICollectionView using Interface Builder (IB) in Xcode?
- Drag a UICollectionView object to your view controller.
- Set proper constraints on the collection view.
- Set dataSource & delegate of the collection view.
- Prototype your cell layout inside the controller.
- Add constraints to your views inside the cell.
What is the difference Collectionviews & Tableviews?
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.
What is UICollectionView supplementary view?
Supplementary views are more related to your data. The collection view layout still decides where to put them, but they are provided by the collection view data source, just like regular cells.
How do I make my UICollectionView scroll horizontal?
You need to reduce the height of UICollectionView to its cell / item height and select ” Horizontal ” from the ” Scroll Direction ” as seen in the screenshot below. Then it will scroll horizontally depending on the numberOfItems you have returned in its datasource implementation.
What is UICollectionViewCompositionalLayout?
UICollectionViewCompositionalLayout. A layout object that lets you combine items in highly adaptive and flexible visual arrangements.
What is compositional layout?
Compositional layouts are a declarative kind of API that allows us to build large layouts by stitching together smaller layout groups. Compositional layouts have a hierarchy that consists of: Item , Group , Section , and Layout .
What is the purpose of supplementary views when used with a UICollectionView?
For instance, if you wanted to put titles for sections, you would use supplementary views because the title would be different for each section and you need to call the data source for each.
How do you center horizontally in UICollectionView cells?
don’t forget to :
- set the view in the cell contentview to a fixed width, centered in it’s container without trailing and leading constraint.
- remove any minimum spacing for cells and lines in the inspector of the CollectionView, set them to 0 each.
What is Sectioninset?
The margins used to lay out content in a section.