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Strange Delay in UITableView Cell Highlighting with iOS 17 and SwiftUI Integration

πŸ‘€ Views: 99 πŸ’¬ Answers: 1 πŸ“… Created: 2025-06-28
ios swift uitableview swiftui

I'm collaborating on a project where I'm working on a project and hit a roadblock... I'm having trouble with I tried several approaches but none seem to work. This might be a silly question, but I'm experiencing a strange delay in highlighting UITableView cells when using SwiftUI's List alongside UIKit components in my iOS 17 app. When I tap on a cell, the highlighting effect takes about half a second to appear, which is not the expected behavior. I've already tried implementing the `UITableViewDelegate` method `tableView(_:didSelectRowAt:)`, but the issue persists. Here's the relevant code snippet: ```swift class MyViewController: UIViewController, UITableViewDelegate { @IBOutlet weak var tableView: UITableView! override func viewDidLoad() { super.viewDidLoad() tableView.delegate = self } func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { // Highlighting cell tableView.cellForRow(at: indexPath)?.contentView.backgroundColor = .lightGray DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) { // Deselect cell after 0.5 seconds tableView.deselectRow(at: indexPath, animated: true) } } } ``` I've also tried checking the `tableView.allowsSelection` property and ensuring it’s set to true. Additionally, I set the `tableView.rowHeight` to `UITableView.automaticDimension` to see if that was causing any delay, but it didn’t help. I noticed this issue predominantly when the content inside each cell is dynamic and involves SwiftUI views, which may be affecting the performance. Anyone else run into this issue, or have any suggestions to improve the highlighting responsiveness? My development environment is macOS. Has anyone else encountered this? I'm using Swift 3.9 in this project. Is this even possible? Thanks in advance! The project is a REST API built with Swift.