Скачать или смотреть How to Show a Placeholder and Icon When a TextField is Empty in SwiftUI

Discover how to effectively implement a `TextField` with a placeholder and an icon in SwiftUI, enhancing user experience by indicating required inputs.
---
This video is based on the question https://stackoverflow.com/q/65209039/ asked by the user 'hallux' ( https://stackoverflow.com/u/14128044/ ) and on the answer https://stackoverflow.com/a/65209143/ provided by the user 'Harshil Patel' ( https://stackoverflow.com/u/14073532/ ) 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: Show placeholder and icon when TextField isEmpty

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.
---
How to Show a Placeholder and Icon When a TextField is Empty in SwiftUI

Creating user-friendly interfaces is essential when developing with SwiftUI, especially when it comes to indicating required text fields. If you’re new to SwiftUI or looking for a better way to notify users of required inputs, you're in the right place. In this guide, we will explore how to properly implement a TextField that displays an icon when it is empty, without compromising user experience.

The Problem

You might be facing the issue where a text field does not visually indicate that a user should enter information, or worse, the keyboard dismisses prematurely when the user starts typing. This can be particularly frustrating and confusing for users. Here's an example of a code snippet that improperly handles this:

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

In the above code, the keyboard disappears after the first character is entered, causing the user to have to tap the text field again to continue typing. This can lead to a frustrating user experience.

The Solution

To resolve this issue, we need to structure our SwiftUI code properly. Below is a refined implementation that keeps the keyboard active while also allowing for the display of an icon when the text field is empty.

Implementing the Correct View

Here’s how you can correctly implement a TextField with a placeholder and an icon indicating that input is required:

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

Explanation of the Code

State Management:

We start by declaring a state variable name to hold the text input. The @ State property wrapper is necessary for the view to update whenever the variable changes.

Creating the TextField:

We set up the TextField with a placeholder text "First & Last Name". This placeholder will give users context about what information they need to provide.

Displaying the Icon:

The icon (exclamationmark.triangle) is conditionally displayed based on whether the name variable is empty. This means that if the field is empty, the icon will be shown; otherwise, it will not.

By using the ternary operator name.isEmpty ? Image(...) : nil, we can avoid adding extra layers that can disrupt user interaction.

Benefits of This Approach

Seamless User Experience: Users can type without interruption, and they receive visual feedback on whether the field is completed.

Clarity: The icon clearly indicates that the field is required, which can reduce user errors.

Conclusion

By following the outlined method, you can enhance your SwiftUI applications with more user-friendly forms. Implementing clear indicators for required fields not only improves user experience but also makes your applications look more polished and professional. Always ensure that your UI not only serves its function but also guides your users effectively.

If you have any questions or need further assistance with SwiftUI, feel free to reach out or leave a comment below!