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OpenCV error from imported project. How can i resolve the following error, I m unable to resolve for past 2 days and searched lot regarding . I used to import this project (Project)and getting error. **

[2016-05-30 16:36:44 - Dex Loader] Unable to execute dex: Multiple dex files define Lorg/opencv/calib3d/Calib3d; [2016-05-30 16:36:44 - SplashActivity] Conversion to Dalvik format failed: Unable to execute dex: Multiple dex files define Lorg/opencv/calib3d/Calib3d;

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I have tried removing and adding the library file. and clean build , eclipse restart and so on. nothing solves here.

when i run it shows this first and the above: Android Launch: Your project contains error(s), please fix them before running application. In Android Stuido:

Error:Execution failed for task ':java:packageAllDebugClassesForMultiDex'.

java.util.zip.ZipException: duplicate entry: org/opencv/calib3d/Calib3d.class

Update:

apply plugin: 'com.android.application' android { compileSdkVersion 15 buildToolsVersion "23.0.3" defaultConfig { applicationId "com.fingerprintrecognition" minSdkVersion 15 targetSdkVersion 15 ndk { moduleName "nonfree_prebuilt" } } configurations { all*.exclude group: 'com.android.support', module: 'support-v4' } sourceSets.main { jni.srcDirs = [] } defaultConfig { multiDexEnabled true } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt' } } } dependencies { compile project(':openCVLibrary2411') compile files('libs/opencv-2.4.9-5.jar') }

Thanks.

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  • Can you please show us your build.gradle file? Commented May 30, 2016 at 12:03
  • @ishmaelMakitla kindly see my build.gradle file Commented May 30, 2016 at 12:05
  • Try setting multiDexEnabled false - also move your dependencies to the app-level build.gradle file. By the way, can you show the app-level gradle file as well? Commented May 30, 2016 at 12:14
  • can u elaborate this refers - dependencies to the app-level build.gradle file ? @ishmaelMakitla this above gradle file is app/gradle file Commented May 30, 2016 at 12:17
  • OK, noted. I suspect the issue might be that you are importing the same library opencv in two places - for instance if the libs folder is part of your project - this might confuse things as to which lib/jar to look at. Did you perhaps add the opencv-2.4.9-5.jar through the "configure buildpath" route? Commented May 30, 2016 at 12:26

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This often happens when you import one library/jar multiple times. Please make sure you are not importing the opencv-2.4.9-5.jar from multiple places. It might also happen that one of the other libraries also imports this library - so you need to check that as well.

Have a look at a closely related issue and the selected answer here.

Hope this helps you resolve the issue.

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