Скачать или смотреть Fixing the onBlur Issue in Your React Native Autocomplete Component

Learn how to resolve the issue of `onBlur` not closing list items in your React Native autocomplete component, ensuring a smoother user experience.
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This video is based on the question https://stackoverflow.com/q/67210441/ asked by the user 'Shreya B' ( https://stackoverflow.com/u/14451710/ ) and on the answer https://stackoverflow.com/a/67213493/ provided by the user 'Meysam Izadmehr' ( https://stackoverflow.com/u/4630852/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Resolving the onBlur Issue in Your React Native Autocomplete Component

When building an autocomplete component in React Native, developers may encounter an issue where clicking outside of the autocomplete list does not trigger the onBlur event, leaving the list visible. If you've faced this frustrating problem, you're not alone. Fortunately, there's a straightforward solution that we’ll explore in this guide.

Understanding the Problem

You may have implemented an autocomplete component with a text input and a flat list to display suggestions based on user input. Everything might work well until you click outside the list, yet the suggestions remain open, leaving the interface cluttered. This issue arises because the onBlur event is not triggered properly, often due to how you style or position the components involved.

Your Current Implementation

Here's a simplified version of how you might have structured your autocomplete component:

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

Given this setup, the onBlur() function isn’t executing as expected when the user taps outside the input field and the suggestions.

The Solution

The problem primarily lies within the styling of the ScrollView. To ensure that tapping outside the input properly triggers the onBlur event, consider these changes:

Step 1: Adjust Your Style

The first adjustment is within your container’s styles. Here’s what to change:

Remove the position, top, and width attributes from the container style. These styles can hinder the ScrollView from behaving like an effective tappable area that can detect clicks outside the input.

Your updated container style should look like this:

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

Step 2: Ensure Proper Props

Make sure to leave the keyboardShouldPersistTaps set to "handled" or "always" within your ScrollView. This helps to manage tap events correctly when the keyboard is open:

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

Step 3: Test Your Component

After making these changes, test your autocomplete component again. Click outside the input and check whether the suggestions disappear as expected.

Conclusion

By adjusting the styles and ensuring the ScrollView setup is correct, you can resolve the onBlur issue where the autocomplete list remains visible even after tapping outside. These changes will lead to a more user-friendly interface and enhance overall interaction within your application.

If you continue to experience issues, double-check your component logic to ensure that state updates are correctly implemented. Happy coding!