Скачать или смотреть Resolving the Unable to Resolve Dependency Error in Android Gradle Projects

A comprehensive guide to fixing the `Unable to resolve dependency for ':app@ debugAndroidTest/compileClasspath'` error in Android projects using Gradle and Kotlin.
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This video is based on the question https://stackoverflow.com/q/67814587/ asked by the user 'Obet Albert Setiawan' ( https://stackoverflow.com/u/16111811/ ) and on the answer https://stackoverflow.com/a/67814841/ provided by the user 'skafle' ( https://stackoverflow.com/u/9184497/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Resolving the Unable to Resolve Dependency Error in Android Gradle Projects

If you're an Android developer, you may have faced the frustrating error message: "Unable to resolve dependency for ':app@ debugAndroidTest/compileClasspath'" when working on your project. This error typically occurs when your project’s Gradle configuration is not set up correctly, particularly around dependencies. In this guide, we will explore the root of the problem and discuss a clear solution to help you get back on track.

Understanding the Problem

When you attempt to sync Gradle after modifying your build scripts—especially when adding new dependencies—you might encounter error messages suggesting that certain dependencies, like the Kotlin standard library, cannot be downloaded. The specific message may vary, but here, you encountered:

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

This suggests that your project is trying to use an incompatible or unavailable version of a dependency.

Analyzing Your Gradle Build Scripts

Let’s take a close look at the critical components of your Gradle files—both the Gradle Project and Gradle App.

Gradle Project

Here are the essential parts of your build.gradle (Project level):

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Key Points:

Your Kotlin version is set to 1.3.72.

It's crucial to ensure that the libraries you use are compatible with this version.

Gradle App

Now let’s review your build.gradle (App level):

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

The Solution: Updating Dependency

The error likely arises because the Kotlin version you're trying to use in your dependencies may not be updated. To resolve this, you should update the Kotlin standard library dependency in your dependencies section, replacing:

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with:

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Why This Works

The kotlin-stdlib-jdk7 version includes additional features and compatibility layers that align better with current Android development practices, making it less likely to encounter unexpected dependency resolution issues.

Conclusion

Resolving dependency issues can be a daunting task for any developer, but with organized structures and a closer look at compatibility, you can effectively solve such problems. Ensure that your dependencies are up to date and compatible with your project setup, and you should avoid running into similar issues in the future. Happy coding!