What does collectionview reloadData do?
What does collectionview reloadData do?
Whenever, user scrolls the UICollectionView, it adds the just-hidden rows in Pool and reuses them for next to be visible rows. So, when you call reloadData(), it simply updates the data in row cells, like updating the UILabel text and the update occurs only for visible cells, and the process goes on.
What is swift UICollectionView?
An object that manages an ordered collection of data items and presents them using customizable layouts. iOS 6.0+
What does reloadData do?
reloadData() Reloads the rows and sections of the table view.
What is indexPath row Swift?
In Swift, an indexPath is a list of indexes that, together, represent the path to a specific location in a tree of nested arrays. It describes an item’s position inside a table view or collection view, storing both its section and its position inside that section.
What is a Diffable data source?
A diffable data source object is a specialized type of data source that works together with your table view object. It provides the behavior you need to manage updates to your table view’s data and UI in a simple, efficient way. Generate the current state of the data.
What is difference between Tableview and collection?
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?
- 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 between indexPath row and indexPath item?
indexPath. row is for tableView and indexPath. item is for collectionView. Available in iOS 6.0 and later.