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POJNI, C++ problems
 

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    <p>I did an Opencv's application en windows and now I am using JNI to convert this code to Android but I am having some problems. In concrete my native code not do nothing.</p> <p>This is my Java class where I define my native methods:</p> <pre><code>package com.example.telo3; import org.opencv.core.Mat; public class Process { static { System.loadLibrary("nativo"); } public Process(){ dir=inicializar_nativo(); } public void Procesar(Mat framedetect, Mat framedraw){ procesar_nativo(dir,framedetect.getNativeObjAddr(),framedraw.getNativeObjAddr()); } private long dir; private static native long inicializar_nativo(); private static native void procesar_nativo(long thiz, long framedetect, long framedraw); </code></pre> <p>}</p> <p>This is my JNI code:</p> <pre><code>#include "nativo.h" #include &lt;opencv2/objdetect/objdetect.hpp&gt; #include &lt;opencv2/highgui/highgui.hpp&gt; #include &lt;opencv2/imgproc/imgproc.hpp&gt; #include "opencv2/video/tracking.hpp" #include &lt;iostream&gt; #include &lt;stdio.h&gt; #include "FaceDetector.h" #include "Draw.h" #include "Almacena.h" #include "Runnable.h" using namespace std; using namespace cv; #include &lt;android/log.h&gt; #define LOG_TAG "NATIVO" #define LOGD(...) ((void)__android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__)) struct variables { Almacena almacena; Draw draw; FaceDetector face_detector; }; JNIEXPORT jlong JNICALL Java_com_example_telo3_Process_inicializar_1nativo( JNIEnv *, jobject) { long dir = (long) new variables(); return (dir); } JNIEXPORT void JNICALL Java_com_example_telo3_Process_procesar_1nativo(JNIEnv *, jobject, jlong dir, jlong framedetect, jlong framedraw) { Mat* telo =(Mat*)framedetect; Mat* telo2= (Mat*)framedraw; ((variables*)dir)-&gt;almacena = ((variables*)dir)-&gt;face_detector.Detect(*telo); //almacena = face_detector.Detect(frame_gray); ((variables*)dir)-&gt;draw.Dibujar(*telo2,((variables*)dir)-&gt;almacena); //frame_capturado = draw.Dibujar(frame_capturado, almacena); if( (((variables*)dir)-&gt;almacena.get_faces()).size() ==0){ LOGD("no detecto caras"); } } </code></pre> <p>I think that I use the Jni correctly but the function Detect not works correctly because when I uses this if return 0.</p>
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