Скачать с ютуб How to Pass Data from a UIViewRepresentable Function to a SwiftUI View в хорошем качестве

How to Pass Data from a UIViewRepresentable Function to a SwiftUI View

Learn how to effectively pass data between UIViewRepresentable and SwiftUI views, ensuring a smooth and efficient user experience. --- This video is based on the question https://stackoverflow.com/q/70083518/ asked by the user 'Oleg Savelyev' ( https://stackoverflow.com/u/6260777/ ) and on the answer https://stackoverflow.com/a/70085134/ provided by the user 'lorem ipsum' ( https://stackoverflow.com/u/12738750/ ) 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: Passing data from UIViewRepresentable function to SwiftUI View 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. --- Passing Data from UIViewRepresentable to SwiftUI When developing an iOS application that leverages both SwiftUI and UIKit, it’s common to encounter situations where you need to pass data between these two frameworks. One common challenge arises when trying to display dynamic data, such as an address, from a UIViewRepresentable function (like a map) into a SwiftUI view. In this guide, we will explore how to seamlessly pass data, specifically an address identified through a map marker, to the user interface in SwiftUI. The Problem Overview Imagine a scenario where a user is selecting a delivery address on a map. As they navigate and zoom on the map, their chosen location is marked and we need to extract the address of this point. Leveraging Apple's Core Location services for reverse geocoding, we can extract the necessary details. However, the challenge lies in passing this address back to the SwiftUI view so that it can be displayed dynamically to the user. A Simplified Solution To address this issue, we’ll implement a single source of truth in the form of a dedicated ViewModel. This ViewModel will manage the address state and other relevant data, making it accessible to both UIKit and SwiftUI components. Step 1: Create a ViewModel First, we create a MapViewModel that conforms to ObservableObject. This ViewModel will contain all the shared data, including the address. Here’s how it looks: [[See Video to Reveal this Text or Code Snippet]] Step 2: Integrate UIViewRepresentable Next, we integrate the UIViewRepresentable component (in this case, our map). We will reference the ViewModel within our MapView and set up the required methods to manage the map view. [[See Video to Reveal this Text or Code Snippet]] Step 3: Update the SwiftUI View Now that we have the ViewModel in place, we can update our SwiftUI LocationView to utilize it. We will bind the addressLabel from our ViewModel to the user interface so that it updates in real-time as the user interacts with the map. [[See Video to Reveal this Text or Code Snippet]] Conclusion By creating a shared ViewModel that serves as a single source of truth, we effectively managed the flow of data between our UIViewRepresentable map and the SwiftUI view. This not only simplifies the architecture of the application, but also ensures a consistent and responsive user interface. Implementing this approach enhances the overall user experience by providing real-time feedback based on their interactions with the map. By following the patterns we've discussed, you can confidently manage and display data between SwiftUI and UIKit components in your applications. Happy coding!