Section headers and footers in iOS Swift - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of section headers in a UITableView?

Section headers help group related rows visually and provide a title or description for each group, making the list easier to understand.

intermediate

Which UITableViewDelegate method provides a view for a section header?

tableView(_:viewForHeaderInSection:) returns a UIView to display as the header for a given section.

intermediate

How do you set the height of a section footer in a UITableView?

Implement tableView(_:heightForFooterInSection:) in UITableViewDelegate and return the desired height in points.

beginner

True or False: Section footers can only display text, not custom views.

False. Section footers can display custom views by implementing tableView(_:viewForFooterInSection:).

intermediate

What happens if you return nil from tableView(_:viewForHeaderInSection:)?

The table view will display the default header, which can be a simple text label if you provide a title via tableView(_:titleForHeaderInSection:).

Which method sets the text title for a section header in UITableView?

A tableView(_:titleForHeaderInSection:)

B tableView(_:viewForHeaderInSection:)

C tableView(_:heightForHeaderInSection:)

D tableView(_:titleForFooterInSection:)

The method tableView(_:titleForHeaderInSection:) returns a simple text string to display as the section header title.

How can you provide a custom view for a section footer?

A Implement tableView(_:titleForFooterInSection:)

B Implement tableView(_:viewForFooterInSection:)

C Implement tableView(_:heightForHeaderInSection:)

D Implement tableView(_:cellForRowAt:)

To show a custom view for a footer, implement tableView(_:viewForFooterInSection:) and return your UIView.

What delegate method controls the height of a section header?

A tableView(_:titleForHeaderInSection:)

B tableView(_:heightForFooterInSection:)

C tableView(_:estimatedHeightForRowAt:)

D tableView(_:heightForHeaderInSection:)

tableView(_:heightForHeaderInSection:) lets you specify the height in points for the header of a section.

If you want no header for a section, what should you return from tableView(_:heightForHeaderInSection:)?

A 0

B CGFloat.leastNormalMagnitude

C UITableView.automaticDimension

D -1

Returning 0 from tableView(_:heightForHeaderInSection:) hides the header for that section.

Which of these is NOT a valid way to customize section headers?

A Providing a title string

B Returning a custom UIView

C Modifying the cellForRowAt method

D Changing the header height

cellForRowAt is for rows, not headers or footers.

Explain how to add a custom view as a section header in a UITableView.

Think about which delegate method returns a UIView for the header.

Describe the difference between providing a title and a custom view for section footers.

One is simple text, the other is a full view.