iOS Development - Framework Basics 1

1 What you will learn

• Get a brief overview of what the iOS framework is
• What the building blocks of the framework are for creating apps including
  • UI Elements, hardware access, data management and system services

2 Agenda

• Overview of iOS Framework Layers
  • Cocoa Touch (top layer)
  • Media Layer
  • Core Services
  • Core OS (lowes layer)
• References

3 Overview iOS Framework Layers

Details on all Apple frameworks can be found in the Apple Developer Documentation

4 Cocoa Touch

Key Frameworks:

• UIKit: See Chapter iOS UIKit Basic
• SwiftUI: See Chapter SwiftUI Basics
• Swift Data: See Chapter on Swift Data

Purpose: This layer provides high-level frameworks for designing the user interface and handling events.

5 Media Layer

Key Frameworks:

• AVFoundation
• Core Animation
• Core Graphics
• Core Image
• Metal

Purpose: Provides resources for working with graphics, audio, and video.

6 Core Services Layer

Key Frameworks:

• CloudKit
• Core Location
• Core Motion
• Core ML
• SiriKit
• HealthKit
• Core Data: See Chapter on Persistence

Purpose: Provides essential services and infrastructure for the app’s functionality.

7 Core OS Layer

Key Components:

• Security
• Networking (e.g. Bluetooth, Bonjour)
• Filesystem access (e.g. File)
• External Accessories
• Accelerate

Purpose: The foundation for all other layers, providing low-level services.

8 References

• iOS Dev Center: developer.apple.com
• Apple Developer Documentation