Module 2 of 3 in Sharing & State Management in SwiftUI

State Management in SwiftUI

Jun 20 2024, Swift 5.9, iOS 17.2, Xcode 15.2

This module delves into state management strategies in SwiftUI, empowering students to handle application state effectively and maintain data consistency across the user interface. By René Cacheaux.

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EXPERIENCE

Beginner level

EST TIME TO COMPLETE

1 hr, 22 mins

CONTENT

3 lessons

Module outcomes

Understand the importance of effective data passing in SwiftUI
Pass data using different data passing methods
Apply appropriate data passing strategies based on specific use cases

Covered concepts

Data flow in SwiftUI apps
Properties for passing data
@Binding and @State

Module content

Introduction to State Management with @State Lesson (28 mins)

This lesson teaches the basics of how SwiftUI views keep track of state. You’ll learn about the @State keyword, which is a way for parts of your app to keep track of local information, like what a user types in a form. By the end of this lesson, you’ll be able to make your app remember and react to what users do

Start

Introduction • Start Reading · 1 min

Understanding @State Reading · 4 mins

Understanding @State Demo Video · 4 mins

Initializing @State Properties Reading · 4 mins

Initializing @State Properties Demo Video · 5 mins

Passing @State to Subviews Reading · 5 mins

Passing @State to Subviews Demo Video · 4 mins

Conclusion Reading · 1 min

Quiz: Introduction to State Management with @State 4 questions

Managing Local View State with @State & @Binding Lesson (30 mins)

Lesson 2 takes you further into making your app interactive. In this lesson, you’ll learn about @Binding, a key tool for connecting different parts of your app. @Binding enables you to have one part of your app show or change information based on what’s happening in another part. Using our budget tracker app as an example, you’ll see how to make different sections of your app work together smoothly. By the end, you’ll be able to build an app that’s not just interactive, but well-connected and responsive.

Start

Introduction • Start Reading · 1 min

Passing Mutable @State using @Binding Reading · 16 mins

Building Financial Entry Form Using @State & @Binding Demo Video · 11 mins

Conclusion Reading · 1 min

Quiz: Managing Local View State with @State and @Binding 3 questions

Leveraging Observation for Shared State Management Lesson (24 mins)

In this lesson, you’ll learn about the @Observable macro, a tool that helps different views in your app share and update information together. We’ll use our budget tracker app to show how @Observable keeps everything in sync, like updating the total income and expenses as you add new entries. By the end of this lesson, you’ll be able to share editable state across different views in your app, keeping the entire app up-to-date.

Start

Introduction • Start Reading · 2 mins

Intro to Observation in SwiftUI Reading · 16 mins

Extracting Logic Outside SwiftUI Using Observation Demo Video · 5 mins

Conclusion Reading · 2 mins

Quiz: Leveraging Observation for Shared State Management 4 questions

Module outcomes

Covered concepts

Module content

Data Persistence in SwiftUI

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