java.lang.UnsatisfiedLinkError: Native method not found: org.opencv.highgui.VideoCapture.n_VideoCapture:(I)J

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Hii All I am new in openCV ..I followed this link http://docs.opencv.org/doc/tutorials/introduction/android_binary_package/dev_with_OCV_on_Android.html for integrate openCV in my android project.and followed last Hello OpenCV Sample example. But it is giving me java.lang.UnsatisfiedLinkError: Native method not found: org.opencv.highgui.VideoCapture.n_VideoCapture:(I)J error Plz can any one help me why this problem is occurs an how can I solve it...

I just gave reference to openCV library..as mentioned in above link. Should I required to to use JNI part also if yes then how. Thanks.