- SwiftUI (iOS 18): Q: What's new in SwiftUI 6 (iOS 18)? A: SwiftUI 6 introduces: Built-in AI-assisted modifiers Enhanced live previews New layout APIs (GridStack, FlowLayout) Native support for Material 4 design principles Real-time design collaboration with Xcode 16 beta
- UIKit: Q: How do you manage state restoration in UIKit apps? A: Implement application(:shouldSaveApplicationState:) and application(:shouldRestoreApplicationState:) in AppDelegate, and override encodeRestorableState(with:)and decodeRestorableState(with:) in view controllers to save and restore UI state.
- Core Data: Q: What is the difference between NSPersistentContainer and NSManagedObjectContext? A: NSPersistentContainer sets up the Core Data stack and manages the context. NSManagedObjectContext is used for performing fetches, inserts, updates, and deletes. Use .viewContext for main-thread UI operations and newBackgroundContext() for background tasks.
- NFC: Q: How can iOS apps using NFC be secured against unauthorized reads/writes? A: Use tag-specific security (e.g., password-protected MIFARE tags), validate tag identity with UID or cryptographic methods, and apply app-level logic to prevent unauthorized access. iOS also requires user interaction to start a session.
- Data Structures: Q: How do you implement a Least Recently Used (LRU) cache in Swift? A: Use a combination of Dictionary for O(1) access and Doubly Linked List for O(1) updates/removals. This data structure is often used in image caching and memory management.
- In-App Purchases: Q: What's new in StoreKit 3 and how does it help developers? A: StoreKit 3 (2025) includes: Simplified APIs Better support for server notifications Improved receipt validation Native subscription offers and churn prediction
- Notifications: Q: How do you implement notification actions (custom buttons in notifications)? A: Define UNNotificationAction, group them into a UNNotificationCategory, and register it with UNUserNotificationCenter. Then assign the category ID to the notification content.
- Firebase / Firestore: Q: How do Firestore security rules work with subcollections? A: Firestore rules don't automatically apply to subcollections. You must explicitly define rules for each path or use wildcards like match /users/{userId}/posts/{postId} to secure nested structures.
- Storyboard: Q: What's the best way to manage complex storyboard-based projects? A: Use multiple storyboards (modular structure), reference via Storyboard References, assign unique Storyboard IDs, and load via instantiateViewController(withIdentifier:).
📡 Apple & iOS News - June 2025
iOS 18 Beta: Focus on AI integration, context-aware Siri, and system-wide smart actions
Xcode 16 Beta: Collaborative live previews, new debug timeline for performance tracing
SwiftUI 6: Support for reusable layout definitions and AI-based design assistant
Apple Developer Program now allows limited test deployments via "Private Share Links"
💼 HR Questions
Q: How do you handle feedback you disagree with?
A: I listen first, ask clarifying questions, and try to understand the perspective. If I still disagree, I present data or alternatives respectfully and align with team goals.
💡 Personality Question
Q: What's your personal learning strategy with fast-changing tech like Swift and Firebase?
A: I dedicate weekly time for hands-on exploration, follow Apple and Firebase blogs, subscribe to technical newsletters, and contribute to side projects to apply new features.
📁 Project Management
Q: How do you estimate timelines for features you've never built before?
A: I break the feature into smaller, known components, estimate each part, add buffer time, and validate with the team or spike tasks. I also communicate that it's an estimate, not a deadline.
🧑🤝🧑 Team Management
Q: How do you balance junior developer growth with project deadlines?
A: I assign small production tasks to juniors, review code together, and ensure they shadow seniors during sprints. I avoid putting pressure by pairing them with mentors while meeting client timelines.
Have a mobile app idea or stuck in development?
Get expert help with iOS, SwiftUI, Flutter, Firebase, and more - contact me at qmshahzad@yahoo.com.
Top comments (0)