How does uitableview cache rows and headers?

UITableView caches UITableViewCell objects only for visible rows, but caches the heights of rows, headers and footers for the entire table. It is possible to create custom UITableViewCell objects with varying heights and custom layouts.
Moreover, how do I create a UITableView headerfooterview from a table view?
Register your UITableViewHeaderFooterView objects with your table view. Implement the tableView (_:viewForHeaderInSection:) and tableView (_:viewForFooterInSection:) methods in your table view delegate object to create and configure your views. Always use a UITableViewHeaderFooterView object for your headers and footers.
Besides, how do I change the height of a row in UITableView? A table view tracks the height of rows separately from the cells that represent them. UITableView provides default sizes for rows, but you can override the default height by assigning a custom value to the table view's rowHeight property.
Subsequently, what is numberofsections and rowsinsection in UITableView?
The UITableViewSource 's NumberOfSections (UITableView) and RowsInSection (UITableView, nint) methods allow the UITableView to request only the data necessary for the cells on the screen. A specific cell is identified by an NSIndexPath, whose Section and Row properties will specify a unique cell.
Similarly, what is estimatedheaderheight in UITableView?
UITableView.automaticDimension is what enables AutoLayout to calculate the height of each cell at runtime. estimatedHeaderHeight should be set to a rough estimate of the total height of its content to display the scrolling indicator. These properties can be set in the Size Inspector when selecting the TableView in your storyboard.

4 Similar Question Found

Do you need to add rows to a uitableview?

Adding rows to a UITableView is a common task, whether you are building a todo app, some kind of social network or anything else that needs to display a list of items that will get updated whenever new data has been added will need to be able to add a new row to that UITableView. In this post we will learn how we can add rows to a UITableView.

How to delete rows from uitableview in swift?

Drag a UITableView onto your View Controller. Use auto layout to pin the four sides. Control drag from the Table View in IB to the tableView outlet in the code. That's all. You should be able run your app now. You only have to add a single method to the basic project above if you want to enable users to delete rows.

Is there a way to scroll vertically with uitableview?

If you look at the documentation of the UITableView class, you will see that it descends from UIScrollView. It might look like table views are made only to manage repeating elements. In reality, though they are the right choice for almost any screen that needs to scroll vertically.

Which is better uicollectionview or uitableview in ios?

In WWDC 2020, Apple pushes the usability of UICollectionView to the next level by introducing the list layout in UICollectionView. By using the new features and APIs given to UICollectionView in iOS14, it is now super easy to build a UITableView -like list, making it arguably the better option when compared to UITableView.