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androidopencvjava-native-interfacejavah

Error: Class org.opencv.core.Mat could not be found

When i generating header file with JNI using 'javah' it shows

Error: Class org.opencv.core.Mat could not be found.

System: Mac OSX

Using: Android Studio and opencv 3.1 for android

Commandline: 

javah -classpath /Users/lumeng/Library/Android/sdk/platforms/android-23/android.jar:. com.lumenghz.test.OpencvHelper

Who can help me?

Edit-1 I also tried

javah -d ~/Documents/androidworkspace/RumenTest/test/src/main/jni -classpath /Users/lumeng/Library/Android/sdk/platforms/android-23/android.jar:. com.lumenghz.test.OpencvHelper

But still got the same error:

Error: Class org.opencv.core.Mat could not be found.
Solution

  • You are giving wrong class path here:

    com.lumenghz.test.OpencvHelper

    Give full class path like this:

    ~/Documents/androidworkspace/RumenTest/openCVLibrary310/build/intermediates/classes/debug:. com.lumenghz.test.OpencvHelper

      javah -d (JNI Folder Location) -classpath (JAR Locaion);(class Path)

    example as per your paths-

     javah -d ~/Documents/androidworkspace/RumenTest/test/src/main/jni -classpath /Users/lumeng/Library/Android/sdk/platforms/android-23/android.jar;~/Documents/androidworkspace/RumenTest/openCVLibrary310/build/intermediates/classes/debug: com.lumenghz.test.OpencvHelper