https://github.com/shobhakartiwari/ios-interview-cheatsheet
https://github.com/shobhakartiwari/ios-interview-cheatsheet
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- Host: GitHub
- URL: https://github.com/shobhakartiwari/ios-interview-cheatsheet
- Owner: shobhakartiwari
- Created: 2025-01-14T15:54:30.000Z (4 months ago)
- Default Branch: main
- Last Pushed: 2025-01-14T15:55:57.000Z (4 months ago)
- Last Synced: 2025-01-14T17:22:02.384Z (4 months ago)
- Size: 2.93 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
# iOS Developer Interview Cheatsheet
This is a comprehensive cheatsheet for iOS developer interviews, covering the most critical topics, concepts, and sample questions. Use this guide to prepare for technical interviews and gain confidence in tackling iOS-related questions.
---
## iOS Developer Interview Topics
| **Category** | **Key Topics** | **Sample Questions** |
|--------------------------|--------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------|
| **Swift Fundamentals** | 1. Optionals & Unwrapping
2. Protocols & Delegation
3. Closures
4. Generics | 1. How does optional chaining work?
2. Explain the difference between `weak` and `unowned` references. |
| **Memory Management** | 1. ARC (Automatic Reference Counting)
2. Strong, Weak, Unowned
3. Retain Cycles | 1. What are retain cycles and how do you resolve them?
2. How does ARC handle memory management? |
| **Concurrency** | 1. Grand Central Dispatch (GCD)
2. Operations & OperationQueue
3. Async/Await | 1. How do you handle background tasks?
2. Explain the difference between `sync` and `async` in GCD. |
| **SwiftUI** | 1. View Lifecycle
2. State Management (`State`, `Binding`, `ObservableObject`)
3. Data Flow (`@Published`, `EnvironmentObject`)
4. MVVM Pattern in SwiftUI
5. Animations
6. Custom Views & Modifiers
7. Handling Dynamic Content
8. Navigation & Deep Linking in SwiftUI | 1. How does `@State` work in SwiftUI?
2. How do you implement the MVVM pattern in SwiftUI?
3. How does data flow between views using `@Published` and `@EnvironmentObject`?
4. How do you create reusable custom views in SwiftUI? |
| **UIKit** | 1. View Controller Lifecycle
2. Auto Layout & Constraints
3. TableView & CollectionView | 1. What is the lifecycle of a `UIViewController`?
2. How do you create a custom `UICollectionViewCell`? |
| **Networking** | 1. URLSession
2. Combine for Networking
3. Handling JSON Data Parsing | 1. How do you handle API requests in iOS?
2. Explain the role of `URLSession` in networking. |
| **Data Persistence** | 1. Core Data
2. UserDefaults
3. Keychain
4. SQLite | 1. How do you use Core Data for local storage?
2. How do you store sensitive information in iOS apps? |
| **Testing** | 1. Unit Testing (XCTest)
2. UI Testing
3. Test-Driven Development (TDD) | 1. How do you write unit tests for view models?
2. How do you perform UI testing in Xcode? |
| **Architecture** | 1. MVC
2. MVVM
3. VIPER
4. Clean Architecture | 1. Explain the difference between MVC and MVVM.
2. How do you implement dependency injection in iOS? |
| **App Lifecycle** | 1. App States (Foreground, Background, Suspended)
2. Push Notifications | 1. How does an iOS app transition between states?
2. How do push notifications work in iOS? |
| **Debugging & Tools** | 1. Instruments for Performance
2. Breakpoints
3. Crash Logs | 1. How do you debug memory leaks in an iOS app?
2. How do you use Instruments for performance profiling? |
| **System Frameworks** | 1. Combine
2. Core Graphics
3. AVFoundation | 1. What is Combine, and how does it work?
2. How do you play audio using AVFoundation? |
| **Version Control** | 1. Git Basics
2. Pull Requests
3. Branching Strategies | 1. How do you resolve merge conflicts in Git?
2. What is the purpose of a pull request? |
---
## SwiftUI Updates
### **Newly Added Topics**
1. **Data Flow in SwiftUI:** Explaining `@Published`, `@EnvironmentObject`, and `@ObservedObject`.
2. **MVVM Pattern in SwiftUI:** Structuring SwiftUI projects using the MVVM pattern.
3. **Handling Dynamic Content:** Best practices for managing dynamic text and content sizes.
4. **Navigation & Deep Linking in SwiftUI:** Managing complex navigation hierarchies and linking to specific app sections.
---
PDF link: [iOS Developer Interview Cheatsheet.pdf](https://github.com/user-attachments/files/18420179/iOS.Developer.Interview.Cheatsheet.pdf)
Feel free to suggest improvements or share your thoughts. Happy coding! 😊