Signing Android APK is the latest step from our  Android app development process before uploading it to Google Play Store. Using a production keystore, we can easily create a signed apk using Export menu on Eclipse IDE. But sometimes, the error might occur while exporting it.

Conversion to Dalvik format failed with error 1 in Android on export is a common error in my experience when exporting or signing an Android APK. There are two solutions that i always use to overcome this problem:

• By cleaning the projects using Projects -> Clean menu in Eclipse
  
• By manually delete the dexedLibs folder on project’s bin directory