List view basics in iOS Swift - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a List in SwiftUI?

A List in SwiftUI is a view that displays rows of data in a single column, similar to a table. It is used to show collections of items in a scrollable list.

beginner

How do you create a simple list of static text items in SwiftUI?

You use List with static views inside, like:<br>List { Text("Item 1") Text("Item 2") }

intermediate

What is the purpose of the ForEach inside a List?

ForEach lets you create a list from a dynamic collection of data by repeating views for each item.

intermediate

Why do items in a List need to be Identifiable?

SwiftUI needs to know how to uniquely identify each item to manage updates and animations efficiently. Making items Identifiable provides a unique ID for each.

beginner

How can you add a navigation title to a List in SwiftUI?

Wrap the List in a NavigationView and use .navigationTitle("Title") modifier on the List or its container.

Which SwiftUI view is used to display a scrollable list of rows?

A VStack

B List

C HStack

D ZStack

List is the view designed for scrollable lists of rows.

What does ForEach do inside a List?

A Adds a button to the list

B Creates a single static row

C Repeats views for each item in a collection

D Changes the list background color

ForEach repeats views for each item in a data collection.

Why must items in a List be Identifiable?

A To allow SwiftUI to track each item uniquely

B To change font size

C To display images

D To add animations manually

Identifiable items let SwiftUI track and update each row efficiently.

How do you add a title to a List screen?

A Use .title() modifier on List

B Use .font() modifier on List

C Add Text above List

D Wrap List in NavigationView and use .navigationTitle()

NavigationView with .navigationTitle() sets the screen title.

Which of these is NOT a correct way to create a List?

A List { VStack { Text("One") Text("Two") } }

B List(items) { item in Text(item) }

C List { Text("One") Text("Two") }

D List { ForEach(items) { item in Text(item) } }

Wrapping rows inside VStack inside List creates only one row, not multiple.

Explain how to create a dynamic list of items in SwiftUI and why Identifiable is important.

Think about how SwiftUI knows which row is which when data changes.

Describe how to add a navigation title to a list screen in SwiftUI.

Remember the container that enables navigation features.