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UITextField not updating on UITextFieldDelegate didChangeSelection in iOS 16

πŸ‘€ Views: 47 πŸ’¬ Answers: 1 πŸ“… Created: 2025-06-05
ios swift uitextfield delegate Swift

I'm deploying to production and I just started working with I'm working on a project and hit a roadblock... After trying multiple solutions online, I still can't figure this out. I'm working on a personal project and I'm working on a personal project and I'm having an issue with a UITextField where I'm trying to update the text based on the selection change in the delegate method `textFieldDidChangeSelection`. Although I'm implementing the delegate method, I notice that the UITextField does not reflect the updates made to its text property immediately. Here’s a snippet of the code I'm using: ```swift class MyViewController: UIViewController, UITextFieldDelegate { @IBOutlet weak var myTextField: UITextField! override func viewDidLoad() { super.viewDidLoad() myTextField.delegate = self } func textFieldDidChangeSelection(_ textField: UITextField) { if let selectedRange = textField.selectedTextRange { let start = textField.offset(from: textField.beginningOfDocument, to: selectedRange.start) let end = textField.offset(from: textField.beginningOfDocument, to: selectedRange.end) let selectedText = textField.text?.substring(with: NSRange(location: start, length: end - start)) textField.text = "Selected: \(selectedText ?? "")" } } } ``` When I select a portion of text, I expected the UITextField to immediately update and show the selected text, but it doesn't update until I tap outside the UITextField. I’ve tried calling `textField.reloadInputViews()` after updating the text in the delegate method, but it didn't help. I'm running this on iOS 16.5 and Xcode 14.3. Is there a specific way to force the UITextField to refresh its UI after making updates to its text in the `textFieldDidChangeSelection` method? Any insights or workarounds would be highly appreciated! My development environment is Ubuntu. This is part of a larger CLI tool I'm building. Any help would be greatly appreciated! What's the best practice here? Thanks for any help you can provide! I recently upgraded to Swift stable. What's the best practice here? This is my first time working with Swift LTS. This is happening in both development and production on Linux.