10 Prompts for Swift and iOS: SwiftUI, UIKit, Core Data, and Combine

Introduction

Building modern iOS applications requires mastering a complex ecosystem of frameworks. Whether you are crafting a new app with SwiftUI, maintaining an existing UIKit project, or managing local data with Core Data, the right prompt can save hours of debugging and research. This article provides 10 ready-to-use, expert-level prompts covering SwiftUI, UIKit, Core Data, and Combine. Each prompt is designed to be copy-pasted into an AI assistant (like ChatGPT or Claude) to get precise, actionable code or architectural advice.

Why Use Prompts for iOS Development?

Prompt engineering is not just for marketing copy — it works remarkably well for technical tasks. A well-structured prompt helps AI understand the context, constraints, and expected output. For iOS developers, this means faster prototyping, fewer compiler errors, and better adherence to Apple’s Human Interface Guidelines. According to a 2025 survey by Stack Overflow, 44% of developers use AI tools daily for code generation and debugging, and iOS developers are among the heaviest users.

10 Expert Prompts for Swift and iOS

1. SwiftUI: Responsive Layout with Adaptive Padding

Task: Create a SwiftUI view that adapts its padding and font size based on device size (iPhone vs iPad).

Prompt:

“Generate a SwiftUI view that displays a card with an image, title, and description. The view must use @Environment(\.horizontalSizeClass) to adjust padding (16 on compact, 32 on regular) and font size (body on compact, title2 on regular). Include a preview for both size classes.”

Example usage: Paste into an AI assistant and receive a complete CardView struct with conditional modifiers.

2. UIKit: Programmatic Auto Layout with NSLayoutAnchor

Task: Build a login screen entirely in code using Auto Layout anchors.

Prompt:

“Write a UIViewController subclass that creates a text field for email, a text field for password, and a login button. Use NSLayoutAnchor to center them vertically with 20-point spacing. The text fields should have a height of 44 and leading/trailing margins of 16. Do not use storyboards.”

Example usage: The AI returns a complete LoginViewController with viewDidLoad setup.

3. Core Data: Fetch and Display with @FetchRequest

Task: Fetch and display a list of Task entities in SwiftUI using Core Data.

Prompt:

“Create a SwiftUI view that shows a list of Task entities from Core Data. The entity has attributes: title (String), dueDate (Date), and isCompleted (Bool). Use @FetchRequest sorted by dueDate ascending. Include a Text showing the count of incomplete tasks.”

Example usage: Returns a TasksListView with a Section header showing incomplete count.

4. Combine: Debounced Search in SwiftUI

Task: Implement a search bar that debounces user input before making a network request.

Prompt:

“Implement a search bar in SwiftUI that uses Combine’s debounce(for:scheduler:) operator. The view should contain a TextField bound to a @Published string. When the user stops typing for 0.5 seconds, trigger a simulated API call that returns an array of strings. Show a ProgressView during loading.”

Example usage: Provides a SearchView with a ViewModel that uses AnyCancellable.

5. SwiftUI: Custom Animated Tab Bar

Task: Create a custom tab bar with animated transitions.

Prompt:

“Design a custom TabBar view in SwiftUI with four tabs: Home, Search, Favorites, Profile. Use matchedGeometryEffect to animate a selection indicator (a capsule) that slides horizontally. Each tab should have an SF Symbol icon. The selected tab should have the accent color.”

Example usage: Generates a CustomTabBar view that can replace the standard TabView.

6. UIKit: Dynamic Table View with Diffable Data Source

Task: Use UITableViewDiffableDataSource to manage a list of contacts.

Prompt:

“Write code for a UITableViewController that uses UITableViewDiffableDataSource to display a list of Contact objects (name, phone). Implement a method to add a new contact with a swipe action. Use NSDiffableDataSourceSnapshot to update the table.”

Example usage: Provides a complete implementation with swipe-to-add and snapshot reload.

7. Core Data: Batch Delete and Performance

Task: Delete all objects of a specific entity efficiently.

Prompt:

“Generate a function that deletes all LogEntry entities from Core Data using NSBatchDeleteRequest. The function should be asynchronous and return a Result indicating success or failure. Include error handling and context saving.”

Example usage: Returns a batchDeleteAllLogEntries function with proper NSPersistentStoreCoordinator usage.

8. Combine: CombineLatest with Multiple Publishers

Task: Combine two text fields and enable a button only when both are non-empty.

Prompt:

“Create a SwiftUI view with two TextFields (username and password). Use Combine’s CombineLatest to subscribe to both publishers. A Button should be disabled unless both strings have at least three characters. Show the validation state in a Text view.”

Example usage: Returns a LoginFormView with a ViewModel that publishes a isFormValid boolean.

9. SwiftUI: Accessibility and VoiceOver

Task: Ensure a custom view is fully accessible.

Prompt:

“Take the following SwiftUI view and add accessibility modifiers: a VStack with an Image and two Text views. Add accessibilityLabel, accessibilityValue, accessibilityHint, and accessibilityAddTraits(.isButton) where appropriate. Explain what each modifier does.”

Example usage: The AI returns the modified view with comments explaining each accessibility property.

10. UIKit: Custom Collection View Layout (Snap-to-Cell)

Task: Build a horizontally scrolling collection view with snap-to-cell behavior.

Prompt:

“Implement a UICollectionView with a custom UICollectionViewFlowLayout subclass that snaps each cell to the center when scrolling stops. The cell size should be 280x400. Use targetContentOffset(forProposedContentOffset:withScrollingVelocity:) to calculate the nearest cell offset.”

Example usage: Returns a SnappingCollectionViewLayout class with comments explaining the snapping logic.

Practical Tips for Using Prompts Effectively

Conclusion

These 10 prompts cover the most common tasks in modern iOS development: from SwiftUI layouts and UIKit programmatic views to Core Data batch operations and Combine reactive patterns. By using structured prompts, you can accelerate your development workflow and reduce time spent on boilerplate code. Remember to always review AI-generated code for security and performance, especially when dealing with Core Data or network calls. As AI tools continue to improve, prompt engineering becomes an essential skill for every iOS developer.

ASI Biont supports integration with various APIs for data management and automation — learn more at asibiont.com/courses.

Happy coding!