22 May 2024 Leave a comment Tech-Help
Encountering the “Conversion to Dalvik format failed with error 1” error in your Android application can be frustrating. This error typically occurs when adding a specific external JAR file to your project, leading to conflicts or duplications. Here, we outline a step-by-step guide to resolving this issue effectively.
Understanding the Error
The error message generally looks like this:
UNEXPECTED TOP-LEVEL EXCEPTION: java.lang.IllegalArgumentException: already added: Lorg/xmlpull/v1/XmlPullParser;
This indicates that the Dalvik converter has encountered duplicate class definitions, often due to conflicting JAR files or package name conflicts.
Step-by-Step Solution
1. Clean Your Project
First, try the simplest solution:
- Go to Project » Clean
- Select your project and click OK
This action removes all compiled files and forces Eclipse to rebuild the project from scratch.
2. Check for Duplicate JAR Files
Ensure that you do not have duplicate JAR files in your project:
- Go to Project » Properties » Java Build Path » Libraries
- Remove all entries except the “Android X.Y” (e.g., Android 1.5)
- Click OK
If you have JAR files located inside your project folders and added as Java Path Libraries, they might not show up under the Package Explorer but can cause duplication issues.
3. Resolve Package Name Conflicts
If you have a package with the same name in multiple locations, it can cause this error. Ensure that no two JAR files or library projects contain the same package and class names.
4. Avoid Manual Classpath Edits
Check if you have manually edited the classpath file. Sometimes, adding the android.jar path manually can cause issues. Remove any manual additions to the classpath file and regenerate your JavaDoc if needed.
5. Update ProGuard
If you are using ProGuard, ensure it is updated to the latest version:
- Download the latest ProGuard version
- Replace the
libfolder in your Android SDK’s ProGuard directory
Additional Tips
- Disable Build Automatically while exporting your application, and don’t forget to turn it back on afterward.
- Ensure no unnecessary JAR files are included in your build path.
- Perform a Lint Check via Android Tools » Run Lint: Check for Common Errors to identify issues.
Conclusion
By following these steps, you should be able to resolve the “Conversion to Dalvik format failed with error 1” error and successfully build your Android project in Eclipse. For more detailed guides on Android development issues, you can refer to our other blog articles:
- How to Resolve Cleartext HTTP Traffic Not Permitted Error in Android 8 and Above
- How to Speed Up the Android Emulator
- How to Retrieve a Unique Android Device ID
Streamline Your Testing with Repeato
For mobile developers looking to enhance their testing process, consider using Repeato, our no-code test automation tool for iOS and Android. Repeato leverages computer vision and AI to create, run, and maintain automated tests swiftly. This tool allows developers to focus on building exceptional products while delegating test automation to non-technical team members, ensuring a more efficient development workflow.
