How do I set up UICollectionView?
The main steps of creating your first UICollectionView based screen are these:
- 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.
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.
How do I scroll horizontally in Swift?
To set these two constraints, make selection on contentView and then control + drag to UIScrollView and then choose equal width and equal height . Now set the constraint priority to low(250) of width if you want horizontal scrolling or of height if you want vertical scrolling.
What are the two common collection view layout types?
There are two general types of collection view layouts:
- Layouts whose computations are independent of the content. This is the “simple” case you know from UITableView and UICollectionViewFlowLayout .
- Layouts that need to do content-dependent computations. Our calendar view is an example of this type.
What is a delegate in uicollectionviewdelegateflowlayout?
That delegate object must conform to the UICollectionViewDelegateFlowLayout protocol. Use of the delegate allows you to adjust layout information dynamically. For example, you use a delegate object to specify different sizes for items in the grid.
What is the difference between flow layout and collection view?
A layout object that organizes items into a grid with optional header and footer views for each section. A flow layout is a type of collection view layout. Items in the collection view flow from one row or column (depending on the scrolling direction) to the next, with each row containing as many cells as will fit.
How do cells work in the collection view?
Items in the collection view flow from one row or column (depending on the scrolling direction) to the next, with each row containing as many cells as will fit. Cells can be the same sizes or different sizes.