FifthWeekSwift

Week 5: UIKit Integration, Advanced Navigation, Core Data Optimizations, Custom Components, Validations, Gestures

This repo contains a multi‑feature SwiftUI app where the home screen shows a Feature List. Tapping a row navigates to the corresponding demo implementation. It’s designed to learn by doing, with small, focused examples you can reuse in real projects.

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📦 Features (Week 5)

• UIKit Integration — UIViewRepresentable: Wraps UITextView for rich text editing in SwiftUI.
• Advanced Navigation — Deep Link Simulation: Programmatic navigation using NavigationStack + URL parsing.
• CoreData Optimization — Batch Updates: Programmatic Core Data model + NSBatchUpdateRequest demo.
• Custom Components — Button & Toast: Reusable FancyButton + toast view modifier.
• Form Validations — Regex & Logic Checks: Live validation for email & password rules.
• SwiftUI Gestures — Drag & Drop: Drag strings into a drop zone and display results.

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🗂 Project Structure

FifthWeekSwift/
 ├── FifthWeekSwiftApp.swift           // App entry — shows FeatureListView on launch
 ├── Feature.swift                     // Enum of features (title + destination views)
 ├── FeatureListView.swift             // Home screen list + navigation
 ├── UIKitTextViewRepresentable.swift  // UIViewRepresentable wrapper + UIKitTextViewDemo
 ├── DeepLinkNavigationDemo.swift      // URL → NavigationPath demo
 ├── CoreDataManager.swift             // Programmatic Core Data stack (TaskItem)
 ├── CoreDataBatchUpdateDemo.swift     // Seed/clear/batch‑update tasks
 ├── Toast.swift                       // toast view modifier
 ├── FancyButton.swift                 // reusable gradient button
 ├── CustomComponentsDemo.swift        // demo screen for custom UI
 ├── FormValidationDemo.swift          // email/password validation with regex
 └── GesturesDemo.swift                // drag & drop demo

All modules are standalone. You can pick and use any in another project.

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🚀 Getting Started

1. Requirements: Xcode 16+, iOS 17+ (simulator or device), Swift 5.10+

2. Clone:

   git clone https://github.com/garry007/FifthWeekSwift.git
   cd FifthWeekSwift

3. Open & Run: Open FifthWeekSwift.xcodeproj (or .xcworkspace if you use packages) and run ▶️

4. Home Screen: You’ll see Week 5 Demos list. Tap a row to open that feature.

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🧭 How It Works

• Home (Feature List): FeatureListView pulls from Feature.allCases and builds NavigationLinks.
• Routing: Each case in Feature provides a title and a destination view.
• Core Data: A programmatic model (TaskItem) is registered in CoreDataManager to avoid .xcdatamodeld.
• Batch Updates: NSBatchUpdateRequest toggles isDone in bulk for performance.
• UIKit in SwiftUI: UITextViewWrapper uses UIViewRepresentable + Coordinator for delegate callbacks.

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🧪 Quick Manual Tests

• UIKit: Type in the wrapped UITextView, verify character count updates.
• Navigation: In Deep Link demo, try: myapp://feature/formValidation?prefill=email.
• Core Data: Seed 1,000 tasks → Batch mark as done → Clear all.
• Custom Components: Press Show Toast and see it auto‑dismiss.
• Validations: Email + strong password (≥8, 1 upper, 1 lower, 1 digit) enables Submit.
• Gestures: Drag items from the list into the dashed Drop Here zone.

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🧱 Code Snippets

App Entry

@main
struct FifthWeekSwiftApp: App {
    var body: some Scene {
        WindowGroup { FeatureListView() }
    }
}

Feature List

struct FeatureListView: View {
    var body: some View {
        NavigationStack {
            List(Feature.allCases) { feature in
                NavigationLink(feature.title) { feature.destination }
            }
            .navigationTitle("Week 5 Demos")
        }
    }
}

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🧰 Troubleshooting

• Empty list on launch: Ensure Feature conforms to CaseIterable & Identifiable, and FeatureListView uses Feature.allCases.
• Navigation not pushing: Confirm you’re inside a NavigationStack (not just NavigationView on iOS 17+).
• Batch updates not reflected: Call context.refreshAllObjects() after NSBatchUpdateRequest.
• Regex not matching: Patterns are case‑insensitive for email; password requires at least one upper, one lower, one digit.

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🗓 Roadmap (What to Try Next)

• Add unit tests for validators and batch update helpers
• Expand Deep Link demo to open specific rows or tab routes
• Add accessibility labels and VoiceOver testing hints
• Persist drag‑drop results with Core Data / AppStorage

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📣 Share Your Win

Post a short LinkedIn update:

Week 5 in my Swift learning roadmap: embedded UIKit in SwiftUI, simulated deep links with NavigationStack, optimized Core Data with NSBatchUpdateRequest, and built reusable components + gestures. Small steps, consistent progress. #SwiftUI #iOSDev #Combine #CoreData

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📄 License

MIT — feel free to use the code in your projects.