Swipe actions in iOS Swift - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a swipe action in iOS apps?

A swipe action lets users swipe a list item left or right to reveal buttons for quick tasks like delete or edit.

beginner

Which UIKit class helps you add swipe actions to table view rows?

UIContextualAction is used to create swipe actions that appear when a user swipes a table view row.

intermediate

How do you specify the style of a swipe action button in Swift?

You set the style property of UIContextualAction to .normal or .destructive to change its look and behavior.

intermediate

What method do you implement to provide swipe actions for a UITableView row?

Implement tableView(_:trailingSwipeActionsConfigurationForRowAt:) or tableView(_:leadingSwipeActionsConfigurationForRowAt:) to return swipe actions.

beginner

Why should swipe actions be accessible?

Making swipe actions accessible ensures all users, including those using VoiceOver or other assistive tech, can use the app easily.

Which class creates a swipe action button in a UITableView?

A UITableViewCell

B UISwipeGestureRecognizer

C UIContextualAction

D UISwipeAction

UIContextualAction is the class used to create swipe action buttons for table view rows.

Which method provides trailing swipe actions in a UITableView?

A tableView(_:trailingSwipeActionsConfigurationForRowAt:)

B tableView(_:cellForRowAt:)

C tableView(_:didSelectRowAt:)

D tableView(_:leadingSwipeActionsConfigurationForRowAt:)

tableView(_:trailingSwipeActionsConfigurationForRowAt:) returns the swipe actions shown when swiping from right to left.

What style makes a swipe action button red and destructive?

A .cancel

B .normal

C .default

D .destructive

The .destructive style colors the button red to indicate a destructive action like delete.

Swipe actions are usually added to which UI element?

A UITableViewCell

B UIButton

C UILabel

D UIImageView

Swipe actions are added to UITableViewCell to allow quick actions on list items.

Why is accessibility important for swipe actions?

A To improve app speed

B To support users with disabilities

C To reduce app size

D To add animations

Accessibility ensures users with disabilities can use swipe actions with assistive technologies.

Explain how to add a delete swipe action to a UITableView row in Swift.

Think about the method that provides swipe actions and how to create a red delete button.

Describe why swipe actions improve user experience in mobile apps.

Consider how users interact with lists and want fast ways to manage items.