CODEWITHSUNDEEP
androidandroid-ndkvtk
LBes
LBes

Reputation: 3456

Android NDK: Unsatisfied Link Error

This might be a silly question but I'm struggling with it. I've seen some post about it on SO but I still can't solve the error.

I am facing the kinda famous unsastified link error.

My code is as follow.

The native.cxx:

extern "C" {
    JNIEXPORT jlong JNICALL Java_com_example_VTKNative_JavaVTKLib_init(JNIEnv * env, jobject obj,  jint width, jint height);
    JNIEXPORT void JNICALL Java_com_example_VTKNative_JavaVTKLib_render(JNIEnv * env, jobject obj, jlong renWinP);
    JNIEXPORT void JNICALL Java_com_example_VTKNative_JavaVTKLib_onKeyEvent(JNIEnv * env, jobject obj, jlong udp,
      jboolean down, jint keyCode, jint metaState, jint repeatCount
      );
    JNIEXPORT void JNICALL Java_com_example_VTKNative_JavaVTKLib_onMotionEvent(JNIEnv * env, jobject obj, jlong udp,
      jint action,
      jint eventPointer,
      jint numPtrs,
      jfloatArray xPos, jfloatArray yPos,
      jintArray ids, jint metaState);
};


struct userData
{
  vtkRenderWindow *RenderWindow;
  vtkRenderer *Renderer;
  vtkAndroidRenderWindowInteractor *Interactor;
};

/*
 * Here is where you would setup your pipeline and other normal VTK logic
 */
JNIEXPORT jlong JNICALL Java_com_example_VTKNativeJavaVTKLib_init(JNIEnv * env, jobject obj,  jint width, jint height)
{
    ....
}

And the error I get is:

06-30 00:02:50.468: E/AndroidRuntime(14916): FATAL EXCEPTION: GLThread 960
06-30 00:02:50.468: E/AndroidRuntime(14916): Process: com.example.vtknative, PID: 14916
06-30 00:02:50.468: E/AndroidRuntime(14916): java.lang.UnsatisfiedLinkError: Native method not found: com.example.vtknative.JavaVTKLib.init:(II)J
06-30 00:02:50.468: E/AndroidRuntime(14916): at com.example.vtknative.JavaVTKLib.init(Native Method)

Hope it's not something crazy simple that I've just missed.

Thanks in advance.

Upvotes: 0

Views: 127

Answers (1)

ph0b
ph0b

Reputation: 14473

You should rename your C++ function Java_com_example_VTKNativeJavaVTKLib_init to Java_com_example_vtknative_JavaVTKLib_init so it matches your Java declaration (com.example.vtknative.JavaVTKLib.init).

Upvotes: 3

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