Скачать или смотреть Resolving JNI FatalError: Unable to Load Library in Unity Android Builds

Discover how to fix the `JNI FatalError: Unable to load library "libil2cpp.so"` issue during Unity Android builds, ensuring smooth deployment for your Flutter applications.
---
This video is based on the question https://stackoverflow.com/q/77020824/ asked by the user 'Shivam sehrawat' ( https://stackoverflow.com/u/10721698/ ) and on the answer https://stackoverflow.com/a/77021898/ provided by the user 'Shivam sehrawat' ( https://stackoverflow.com/u/10721698/ ) 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: 'JNI FatalError called: Unable to load library:-mjBRuiRk8odgUr7LcW7eNw==/lib/arm64/libil2cpp.so [dlopen failed: library "libil2cpp.so" not found]'

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.
---
Resolving JNI FatalError: Unable to Load Library in Unity Android Builds

If you’re a developer working with Unity and Flutter, you may have encountered the frustrating issue of receiving a JNI FatalError related to the inability to load a library, specifically the libil2cpp.so. This error can stall your development process, especially if you have been troubleshooting it for days. Today, we’re going to break down what this error means, why it occurs, and how you can effectively resolve it.

Understanding the Error

The error message looks like this:

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

This particular error arises when the Java Native Interface (JNI) is trying to load a native library but fails to locate it. The specified library, libil2cpp.so, is critical for Unity applications built for Android, as it houses the necessary compiled code for executing processes efficiently.

Possible Causes

Missing Library: The library file (libil2cpp.so) is not present in the expected directory.

Incorrect Build Configuration: The build process is improperly configured, leading to the failure in recognizing the architecture.

Flutter Configuration: Your configurations in the Local.properties file might not point to the correct directories or settings.

Solution Steps

To resolve this issue, follow the steps outlined below:

1. Check Split APK Configuration

Unity provides an option for building Split APKs by Target Architecture. This is an essential setting, especially for Android builds that must differentiate between various CPU architectures.

Open your Unity project.

Navigate to Build Settings.

Select Player Settings.

Under the Other Settings tab, look for the checkbox Split APKs by Target Architecture.

Make sure this option is checked.

2. Update Local Properties

You should ensure that your Local.properties file has the correct paths to the SDK and NDK. Here’s a look at how the configuration should typically look:

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

Make sure:

The ndk.dir is correctly pointing to your Unity installation.

Both the SDK and Flutter paths are accurate.

3. Perform a Clean Build

Sometimes, residual files from previous builds can cause conflicts. It’s advisable to perform a clean build:

Delete the build directory in your project if it exists.

Rebuild the project after making the above adjustments.

Conclusion

Encountering the JNI FatalError: Unable to load library "libil2cpp.so" can be daunting, but it’s often solvable by verifying your build configurations and ensuring that essential libraries are correctly set up. By following the steps outlined in this guide, you should be able to resolve the issue and continue your development seamlessly.

If you continue to experience challenges, consider reaching out to community forums or the official documentation for further assistance.

This resolution will empower you to build and deploy your Flutter applications on Android without the JNI FatalError roadblock interrupting your progress.