Скачать или смотреть Dynamically Render Card Views with @ Binding in SwiftUI

Learn how to dynamically create card views in SwiftUI using `@ Binding` to manage boolean states for each card.
---
This video is based on the question https://stackoverflow.com/q/63325567/ asked by the user 'andreas.teich' ( https://stackoverflow.com/u/12420408/ ) and on the answer https://stackoverflow.com/a/63325711/ provided by the user 'Asperi' ( https://stackoverflow.com/u/12299030/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Pass property from object within array as Binding

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Dynamically Render Card Views with @ Binding in SwiftUI

Creating interactive and dynamic user interfaces is a cornerstone of modern app development, especially with frameworks like SwiftUI. One common requirement is to render multiple views based on an array of objects. This guide will explore how to achieve this with a focus on using @ Binding to manage state effectively in SwiftUI.

Understanding the Problem

You may find yourself in a situation where you want to display a list of "card" views, each containing specific properties such as a title, an image, and a selection state. The primary challenge arises when you need to bind the state of each card's selection property to the original array that defines your card views. Let's break down the requirements:

You have an array of objects, each representing a card.

Each card has properties: a title, an image, and a boolean called selected.

You need each card's selected property to be of type @ Binding, which allows the UI to reflect changes dynamically.

Step-by-Step Solution

Let's explore how to implement this scenario in SwiftUI. We'll go through the necessary code changes and logic step by step.

Step 1: Define Your Model

First, you need to define the model for your card. This will include a unique identifier (id), along with the title, image, and selection properties.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Create the SwiftUI View

To create the card view, you will use a ScrollView that contains a horizontal stack of card views. Here is how you should structure your ScrollView:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Implement the ForEach Loop

Here's the crucial part of our solution: we will enumerate the cardTypes array and bind the selected property properly.

[[See Video to Reveal this Text or Code Snippet]]

Explanation of the Code

Array(cardTypes.enumerated()): This converts the array into a format where we can get both the index and the card type at once. This is essential because we need the index to access the correct item when binding the selected property.

self.$cardTypes[index].selected: This is where the magic happens! We create a binding from the selected property of the specific card, allowing it to update dynamically as the UI changes.

Your Complete Code

Combining everything together, your final implementation for rendering the cards will look something like this:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

In this guide, we tackled the challenge of dynamically rendering card views in SwiftUI using @ Binding. By carefully structuring your model and using enumerated() with ForEach, you can link the state of your card views directly to your underlying data model. This not only makes your UI reactive to user interactions but also maintains a clean and organized codebase.

Feel free to test this implementation and modify it as per your app's design requirements! Happy coding!