ios-swift-development
Develop native iOS apps with Swift. Covers MVVM architecture, SwiftUI, URLSession for networking, Combine for reactive programming, and Core Data persistence.
What this skill does
# iOS Swift Development
## Table of Contents
- [Overview](#overview)
- [When to Use](#when-to-use)
- [Quick Start](#quick-start)
- [Reference Guides](#reference-guides)
- [Best Practices](#best-practices)
## Overview
Build high-performance native iOS applications using Swift with modern frameworks including SwiftUI, Combine, and async/await patterns.
## When to Use
- Creating native iOS applications with optimal performance
- Leveraging iOS-specific features and APIs
- Building apps that require tight hardware integration
- Using SwiftUI for declarative UI development
- Implementing complex animations and transitions
## Quick Start
Minimal working example:
```swift
import Foundation
import Combine
struct User: Codable, Identifiable {
let id: UUID
var name: String
var email: String
}
class UserViewModel: ObservableObject {
@Published var user: User?
@Published var isLoading = false
@Published var errorMessage: String?
private let networkService: NetworkService
init(networkService: NetworkService = .shared) {
self.networkService = networkService
}
@MainActor
func fetchUser(id: UUID) async {
isLoading = true
errorMessage = nil
// ... (see reference guides for full implementation)
```
## Reference Guides
Detailed implementations in the `references/` directory:
| Guide | Contents |
|---|---|
| [MVVM Architecture Setup](references/mvvm-architecture-setup.md) | MVVM Architecture Setup |
| [Network Service with URLSession](references/network-service-with-urlsession.md) | Network Service with URLSession |
| [SwiftUI Views](references/swiftui-views.md) | SwiftUI Views |
## Best Practices
### ✅ DO
- Use SwiftUI for modern UI development
- Implement MVVM architecture
- Use async/await patterns
- Store sensitive data in Keychain
- Handle errors gracefully
- Use @StateObject for ViewModels
- Validate API responses properly
- Implement Core Data for persistence
- Test on multiple iOS versions
- Use dependency injection
- Follow Swift style guidelines
### ❌ DON'T
- Store tokens in UserDefaults
- Make network calls on main thread
- Use deprecated UIKit patterns
- Ignore memory leaks
- Skip error handling
- Use force unwrapping (!)
- Store passwords in code
- Ignore accessibility
- Deploy untested code
- Use hardcoded API URLs
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