Скачать или смотреть Resolving the Entry name 'classes.dex' collided Error When Generating a Signed APK in Android Studio

A detailed guide on how to fix the `Entry name 'classes.dex' collided` error that occurs when generating a signed APK in Android Studio.
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This video is based on the question https://stackoverflow.com/q/66477093/ asked by the user 'Sanjid Chowdhury' ( https://stackoverflow.com/u/12613996/ ) and on the answer https://stackoverflow.com/a/66489897/ provided by the user 'Tanzim Chowdhury' ( https://stackoverflow.com/u/12698250/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding the Entry name 'classes.dex' collided Error

If you're an Android developer, you may have encountered the frustrating error: Entry name 'classes.dex' collided. This typically arises when trying to generate a signed APK in Android Studio, and can halt your progress on deploying your app. The good news is that there’s a straightforward solution for this issue.

Problem Breakdown

What Causes the Issue?

In this case, the error is likely due to a conflict between the existing APK files in your project's release folder. When you change your app's package name and attempt to create a signed APK, Android Studio might try to overwrite a pre-existing APK that has the same entry name. This leads to the collision error.

Contextual Information

Android Studio Version: The original question mentions using Android Studio version 4.1.2, which is compatible with a vast array of development tasks but may experience issues with APK signing if not handled correctly.

Steps to Resolve the Error

To successfully generate your signed APK and eliminate the collision error, follow these organized steps:

Step 1: Locate Your Release Folder

Open Android Studio.

Access your Project view (usually found in the left sidebar).

Navigate to app build outputs apk release.

Step 2: Check for Existing APK Files

In the release folder, look for any existing APK files. These files usually follow a naming convention that includes your package name and may look something like this: app-release.apk.

Step 3: Delete Conflicting APKs

If you discover that an APK file already exists in this folder, it is essential to remove it to prevent any further conflicts. Here’s how to do it:

Right-click on the conflicting APK file (or select it) and choose Delete.

Confirm any prompts to ensure the file is removed from your system.

Step 4: Generate the Signed APK Again

Once you've cleared out the conflicting APKs:

Go to the Build menu in Android Studio.

Select Build Bundle(s) / APK(s) and then Build APK(s).

Follow the prompts to generate your signed APK. Make sure to complete any necessary settings, especially related to the new package name.

Conclusion

After following these steps, you should be able to generate your signed APK without encountering the Entry name 'classes.dex' collided error. Keeping your project clean by regularly checking for existing APKs and maintaining an organized release folder can prevent such interruptions in the future. Happy coding!

Final Thoughts

We hope this guide has provided clarity on resolving the collision error in Android Studio. If you continue to face any challenges or have more questions, feel free to explore relevant community forums or reach out for further assistance.