Posts

Offline Data Caching in SwiftUI: API Integration with Local Database (Realm)

Image
In today’s mobile-first world, users expect your app to work even without an internet connection. Whether your app shows product listings, news feeds, or profile data, caching API responses locally is a must-have. In this blog post, we’ll explore how to: ✅ Fetch data from an API ✅ Save it to a local database (using  Realm ) ✅ Detect internet connectivity ✅ Display data from cache when offline All using  SwiftUI  🚀 🧱 Prerequisites Basic knowledge of SwiftUI Xcode installed (15+ recommended) Add RealmSwift using Swift Package Manager 🧩 Project Architecture + ------------------------+ | Network Layer (API) | + ------------------------+ | v + ------------------------+ | Local DB (RealmSwift) | + ------------------------+ | v + ------------------------+ | SwiftUI UI Layer | + ------------------------+ 🌐 Step 1: Setup Realm Models We’ll model the API data and create a Realm version of it. API Model struct Product : ...
Post a Comment
Read more

Dependency Injection in iOS with SwiftUI

Image
  A Beginner-Friendly Guide to Building Modular, Testable Apps Dependency Injection (DI) is a powerful design pattern that helps you write  more modular, testable, and maintainable code . In SwiftUI, while the framework encourages composition and simplicity, adopting DI can elevate your architecture — especially as your app grows. In this post, you’ll learn: What Dependency Injection is Why it’s useful in SwiftUI apps Different DI techniques in Swift Real-world SwiftUI examples with DI Best practices and when to use DI 🧠 What is Dependency Injection? Dependency Injection  means providing an object with its dependencies from the outside instead of creating them internally. Think of it this way: instead of a class  making  its own tools, it is  handed  the tools it needs. Without DI: class UserViewModel { private var userService = UserService () } With DI: class UserViewModel { private var userService: UserService init ( userService : U...
Post a Comment
Read more