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2014-09-17 11:52:08 -0600 | asked a question | No implementation found for long DetectionBasedTracker.nativeCreateObject(java.lang.String, int) Hi, I'm trying to compile and run the face detection demo from openCV-2.4.9-android-sdk. I have already configured the Appliation.mk and the Android.mk. As I have no idea how these files work I did trial and error and came out with the following: Android.mk: Application.mk this builds the natives and copies it to the app dir. So far everything works fine. Problem is at runtime: mNativeDetector = new DetectionBasedTracker(mCascadeFile.getAbsolutePath(), 0); results in java.lang.UnsatisfiedLinkError: No implementation found for long de.hendrik.test.opencv_facerecognition.DetectionBasedTracker.nativeCreateObject(java.lang.String, int) (tried Java_de_hendrik_test_opencv_1facerecognition_DetectionBasedTracker_nativeCreateObject and Java_de_hendrik_test_opencv_1facerecognition_DetectionBasedTracker_nativeCreateObject__Ljava_lang_String_2I) at de.hendrik.test.opencv_facerecognition.DetectionBasedTracker.nativeCreateObject(Native Method) at de.hendrik.test.opencv_facerecognition.DetectionBasedTracker.<init>(DetectionBasedTracker.java:9) at de.hendrik.test.opencv_facerecognition.MyActivity$1.onManagerConnected(MyActivity.java:90) at org.opencv.android.AsyncServiceHelper$3.onServiceConnected(AsyncServiceHelper.java:318) at android.app.LoadedApk$ServiceDispatcher.doConnected(LoadedApk.java:1202) at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:1219) at android.os.Handler.handleCallback(Handler.java:738) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5070) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:836) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:631) I am using Android Studio (latest beta) and a Nexus 5 with Developer Preview (Android-L). Any ideas are appreciated. thanks in advance Hendrik edit: I found a mismatch between DetectionBasedTracker_jni.cpp and DetectionBasedTracker.java as you can see the first two parameters are missing but i have no idea what to provide. |