Project structure in iOS Swift - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the main folder where all your Swift code files are stored in an iOS project?

The main folder is called the Sources or App folder, where you keep your Swift files like views, models, and controllers.

beginner

What is the purpose of the Assets.xcassets folder in an iOS project?

It stores images, icons, colors, and other media resources used in the app, making it easy to manage and access them.

beginner

What file acts as the entry point of an iOS SwiftUI app?

The file with the @main attribute, usually named AppNameApp.swift, which defines the app's main structure and launch behavior.

intermediate

Why do we use the Info.plist file in an iOS project?

It contains important configuration settings for the app, like app name, version, permissions, and supported device orientations.

intermediate

What is the role of the PreviewProvider in SwiftUI files?

It provides a live preview of your UI design inside Xcode, helping you see changes instantly without running the app on a device.

Which folder typically contains your app's user interface code in an iOS SwiftUI project?

A Sources or App folder

B Assets.xcassets

C Info.plist

D DerivedData

The Sources or App folder holds your SwiftUI views and other code files.

What type of files do you store in the Assets.xcassets folder?

A Image and color resources

B Swift code files

C App configuration files

D Test scripts

Assets.xcassets is for images, icons, and colors used in the app.

What does the Info.plist file NOT contain?

A Supported device orientations

B App permissions

C App version number

D SwiftUI view code

SwiftUI view code is in Swift files, not in Info.plist.

Which file marks the starting point of a SwiftUI app?

A ContentView.swift

B AppNameApp.swift with @main

C Assets.xcassets

D LaunchScreen.storyboard

The file with @main attribute defines the app entry point.

What is the purpose of the PreviewProvider in SwiftUI?

A To run unit tests

B To manage app assets

C To provide live UI previews in Xcode

D To store app settings

PreviewProvider shows live previews of UI designs inside Xcode.

Describe the main folders and files you find in a typical iOS SwiftUI project and their roles.

Think about where code, images, and settings are stored.

Explain how the Info.plist file affects your iOS app's behavior and appearance.

Consider what settings the system reads from this file.