Swift Programming
Objective-C Programming
Xcode
iOS UI Development
iOS Architecture
Networking and APIs
Data Storage
Testing
App Security
How to Design a Scalable iOS Application Architecture
Building Modern iOS Interfaces with SwiftUI and UIKit
Using Swift in an Existing Objective-C Project
API Integration and Data Storage in iOS Applications
Step-by-Step Migration from Objective-C to Swift
Swift Programming
Variables, data types, functions, loops, and conditions
Classes, structures, protocols, and extensions
Optionals and error handling
Closures and generics
Concurrency using async/await
Objective-C Programming
Objective-C syntax and message passing
Headers (.h) and implementation files (.m)
Categories, protocols, and delegates
Memory management and ARC
Blocks
Swift–Objective-C interoperability and bridging headers
Xcode
Creating and configuring iOS projects
Using Interface Builder and Storyboards
Debugging with breakpoints
Managing build settings and schemes
Using the iOS Simulator
Profiling applications with Instruments
iOS UI Development
Learn both:
SwiftUI for modern iOS applications
UIKit for existing and enterprise applications
Important concepts include:
Views and view controllers
Navigation and tab bars
Auto Layout and responsive interfaces
Table views and collection views
Forms, alerts, animations, and gestures
Dark mode and device-size compatibility
iOS Architecture
Understand common application architectures:
MVC
MVVM
Clean Architecture
Coordinator pattern
Dependency injection
Networking and APIs
REST API integration
URLSession
JSON parsing using Codable
Authentication tokens
File uploads and downloads
Error handling and offline states
Data Storage
UserDefaults
Keychain for secure information
Core Data
SQLite
Local file storage
CloudKit or Firebase basics
Testing
Unit testing with XCTest
UI testing with XCUITest
Mocking API responses
Testing view models and business logic
Debugging crashes and memory leaks
App Security
Secure storage using Keychain
HTTPS and API security
Certificate pinning basics
Biometric authentication using Face ID or Touch ID
Avoiding hard-coded secrets
Protecting personal user data
Apple Platform Knowledge
Application lifecycle
Permissions for camera, photos, location, and notifications
Push notifications
Background tasks
Deep links and universal links
Accessibility
App Store submission and review requirements
Development Tools
Git and GitHub
Swift Package Manager
CocoaPods for older projects
CI/CD using GitHub Actions, Bitrise, or Xcode Cloud
Jira or another task-management platform
Recommended learning order
Swift fundamentals
Xcode and iOS Simulator
SwiftUI
UIKit
APIs and JSON
Data storage
Architecture such as MVVM
Testing and debugging
Objective-C basics
Swift–Objective-C interoperability
Build and publish a complete application
IMPORTANT TOPIC
Key differences between Swift and Objective-C
Designing an iOS application architecture
Building UI with SwiftUI and UIKit
Using Swift with an existing Objective-C codebase
API integration and data storage
Unit testing with XCTest
UI testing with XCUITest
Performance, security, and memory management
Migrating an Objective-C application to Swift
Choosing the right language for a new or legacy iOS project
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