How to Change textField User-Interaction According to Condition in Swift

Learn how to customize `UITextField` interactions in Swift based on conditions using toast messages and date pickers.
---
This video is based on the question https://stackoverflow.com/q/69018072/ asked by the user 'anySwift' ( https://stackoverflow.com/u/16577342/ ) and on the answer https://stackoverflow.com/a/69018268/ provided by the user 'Amr' ( https://stackoverflow.com/u/11974184/ ) 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: How to change textField user-interaction according to condition in Swift

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

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Customizing UITextField User-Interaction in Swift

When working with user inputs in Swift, particularly with UITextField, you might encounter specific situations where user interaction needs to change based on provided conditions. For instance, let’s say you have two text fields: fromDateTextField and toDateTextField. Here’s the problem: you want the toDateTextField to show a toast message if it’s tapped while fromDateTextField is empty, instead of opening a date picker. In this guide, we’ll walk through how to implement a solution to this problem.

Understanding the Problem

You have two text fields, but the interaction pattern you want is conditional:

If fromDateTextField is empty and the user taps on toDateTextField, a message should appear, and the date picker must not open.

You also want the interaction to allow the date picker to function correctly when fromDateTextField is filled.

The initial attempts to set user interaction for these fields might not yield the expected behavior, as the enabled state and toast messages might not trigger as intended.

Solution Breakdown

The solution involves making some modifications to your view controller's methods. Here are the steps you need to follow:

1. Initial Setup in viewDidLoad

First, ensure the toDateTextField is initially disabled to prevent user interaction until a date is selected from fromDateTextField.

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

2. Detect Taps on TextFields

You need to determine which text field is being edited. If the toDateTextField is tapped and fromDateTextField is empty, display a toast message.

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

3. Enable toDateTextField When Appropriate

To allow the user to interact with toDateTextField, you also need to enable it when fromDateTextField is filled. This can be done in the textFieldDidEndEditing method.

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

4. Setting the Delegate

Don't forget to set the delegate of both text fields in your viewDidLoad for this behavior to work correctly:

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

Conclusion

By following these steps, you will have successfully customized the user interaction for UITextField instances based on specified conditions. This ensures a smooth user experience, where users receive appropriate feedback (through toast messages) depending on their actions.

Remember: The key to a great user experience is not just processing input but ensuring users are guided correctly through their actions. Fine-tuning interactions like these can significantly enhance that experience.

With the techniques outlined here, you'll be more equipped to handle similar scenarios in your Swift projects. Happy coding!

Видео How to Change textField User-Interaction According to Condition in Swift канала vlogize