Dependency Injection Tutorial for iOS: Getting Started | raywenderlich.com

Official Tutorials
#1

In this tutorial, you’ll learn about Dependency Injection for iOS, as you create the profile page of a social media app in SwiftUI.

This is a companion discussion topic for the original entry at https://www.raywenderlich.com/14223279-dependency-injection-tutorial-for-ios-getting-started
#2

hi, I found this error " Unexpectedly found nil while unwrapping an Optional value: file Sociobox/ProfileContentProvider.swift, line 55
user: User = DIContainer.shared.resolve(type: User.self)!,

not sure why is user throwing this error?

#3

Yes I got the same. It is because the Container is not properly initialised. Try to follow until she writes: “Build and run”, before the " Extending the Functionality" paragraph.
It works for me after I added the code in SceneDelegate! :slight_smile:

#4

Thanks for sharing your knowledge. I was hoping the Tutorial could include some important cases that are not explained when trying to do dependency injection with SwiftUI. In particular when a View has @StateObject it seems SwiftUI doesn’t like us to use dependency injection. So if you could include how to add dependencies like @StateObject, @State and @Binding will be great.