Скачать или смотреть Solving the React Native Image Display Issue: HTTP Images Not Appearing in APK Release

Discover how to resolve the issue of `HTTP` images not displaying in your React Native app after releasing it as an APK on Android.
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Solving the React Native Image Display Issue: HTTP Images Not Appearing in APK Release

If you're a React Native developer, you've probably faced a frustrating issue: images sourced from http URLs appear perfectly during debugging, but they vanish after you release your app as an APK and install it on your Android device. This problem can be quite perplexing and can halt your app’s progress. In this guide, we will delve into the underlying causes of this issue and provide a straightforward solution to ensure your images display correctly in production.

Understanding the Problem

When developing mobile applications, React Native allows you to use external images by referencing them through URLs. This is a common practice that helps reduce the size of your app and allows dynamic content. While everything seems to work fine during development, it often leads to unexpected behavior in a production environment.

For instance, consider the following code snippet that is meant to display an image:

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

The image linked through props.img might show up as expected while debugging, but disappear entirely after you build and deploy your APK. The root cause of this issue typically relates to security settings in Android that restrict the use of non-secure http traffic.

The Solution: Allowing Cleartext Traffic

To resolve this issue and ensure that your app can retrieve images from http URLs, you need to modify the AndroidManifest.xml file of your React Native application. By explicitly allowing cleartext traffic, you can bypass the restrictions that prevent http resources from being loaded in production.

Step-by-Step Guide

Locate your AndroidManifest.xml: This file is generally found in the android/app/src/main directory of your React Native project.

Open the AndroidManifest.xml file: Use your preferred code editor to open the file for editing.

Add the cleartext traffic permission: Within the <application> tag, add the following line to enable cleartext traffic:

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

Explanation of the Change

android:usesCleartextTraffic="true": This attribute explicitly tells the Android system to allow your app to make non-secure HTTP requests. Without this setting, Android may block all unsecured traffic by default, contributing to the problem of images not appearing in your app.

After Implementation

Once you have made these changes, rebuild your app and create a new APK. Install this version on your Android device and test the image functionality once again. You should find that images from http URLs now display properly, resolving the earlier issue you encountered.

Conclusion

Addressing the issue of http images not appearing in your React Native app's APK release is a vital step in developing user-friendly applications. With just a simple adjustment to your AndroidManifest.xml, you can enhance the functionality and user experience of your app. Don’t let minor roadblocks stand in the way of your development journey — tackle them head-on!

For any further queries or problems you might face in your app development, feel free to reach out, and happy coding!