iOS Development Guide 🍏📱

1. What is iOS?

iOS is Apple’s mobile operating system used in iPhones and iPads.

2. Tools Needed

- Mac Computer (required)
- Xcode (official IDE)
- Swift programming language

3. What is Xcode?

Xcode is Apple’s official IDE used to design UI, write Swift code, and run iOS simulators.

4. App Structure

App/
 ├── AppDelegate.swift
 ├── SceneDelegate.swift
 ├── ViewController.swift
 ├── Main.storyboard

5. UI Design (Storyboard)

- Drag & Drop UI
- Buttons
- Labels
- TextFields

6. ViewController (Swift)

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        print("iOS App Started")
    }
}

7. Button Action

@IBAction func buttonTapped(_ sender: UIButton) {
    print("Button Clicked")
}

8. Navigation

let vc = SecondViewController()
navigationController?.pushViewController(vc, animated: true)

9. API Integration

Use URLSession:
- Fetch data from server
- Parse JSON
- Show in UI

10. Storage Options

- UserDefaults
- CoreData
- CloudKit

11. App Deployment

Steps:
1. Build app in Xcode
2. Test in simulator
3. Upload to App Store Connect
4. Submit for review

12. Project Ideas

• To-Do App 📋
• Chat App 💬
• Weather App 🌦️
• Fitness App 🏃