👀 Views: 1320 💬 Answers: 1 📅 Created: 2025-07-22

ios uikit uisegmentedcontrol Swift

I'm stuck on something that should probably be simple. I'm experiencing an scenario with `UISegmentedControl` where the selected segment does not update correctly under certain conditions in my iOS 17 app. I have a segmented control that is supposed to reflect a selection based on a network response. When the user makes a selection, I update the segmented control's selected index, and I also update the underlying data model. However, the UI does not reflect the changes as expected. Here’s the relevant code snippet: ```swift class ViewController: UIViewController { @IBOutlet weak var segmentedControl: UISegmentedControl! var dataModel: [String] = ["Option 1", "Option 2", "Option 3"] override func viewDidLoad() { super.viewDidLoad() // Initial setup segmentedControl.removeAllSegments() for (index, option) in dataModel.enumerated() { segmentedControl.insertSegment(withTitle: option, at: index, animated: false) } segmentedControl.selectedSegmentIndex = 0 } func updateSegmentedControl(with selection: Int) { // Simulating a network call that returns the selected index DispatchQueue.main.asyncAfter(deadline: .now() + 1) { self.segmentedControl.selectedSegmentIndex = selection print("Selected Segment Index: \(self.segmentedControl.selectedSegmentIndex)") } } } ``` I call `updateSegmentedControl(with: 1)` after a network response indicating that the second option should be selected. The expected behavior is that `segmentedControl.selectedSegmentIndex` updates to 1, but it remains at 0. I also tried calling `segmentedControl.sendActions(for: .valueChanged)` after updating the selected index, but that didn't help either. I'm not seeing any errors in the console, just the wrong selected index. Is there something else I might be missing, or is this a known scenario with `UISegmentedControl` in iOS 17? Any insights would be greatly appreciated! Is there a simpler solution I'm overlooking?