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POCreate an element of a c++ class in JNI
 

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    <p>I want create an element of a own c++ class. My JNI function:</p> <pre><code>JNIEXPORT void JNICALL Java_com_example_telo3_Process_inicializar_1nativo (JNIEnv *, jobject){ Almacena almacena; } </code></pre> <p>And Almacena is a c++ class:</p> <pre><code>#pragma once #include &lt;opencv2/objdetect/objdetect.hpp&gt; #include &lt;opencv2/highgui/highgui.hpp&gt; #include &lt;opencv2/imgproc/imgproc.hpp&gt; #include &lt;iostream&gt; #include &lt;stdio.h&gt; using namespace std; using namespace cv; class Almacena { private: std::vector&lt;Rect&gt; myfaces; std::vector&lt;Rect&gt; myeyes_r; std::vector&lt;Rect&gt; myeyes_l; std::vector&lt;Rect&gt; mynoses; std::vector&lt;Rect&gt; mymouths; Point2f P0; Point2f P1; Point2f P2; Point2f P3; public: Almacena(void); ~Almacena(void); void set_faces(std::vector&lt;Rect&gt; faces); void set_eyes_r(std::vector&lt;Rect&gt; eyes_r); void set_eyes_l(std::vector&lt;Rect&gt; eyes_l); void set_noses(std::vector&lt;Rect&gt; noses); void set_mouths(std::vector&lt;Rect&gt; mouths); void set_P0(Point2f aux); void set_P1(Point2f aux1); void set_P2(Point2f aux2); void set_P3(Point2f aux3); std::vector&lt;Rect&gt; get_faces(); std::vector&lt;Rect&gt; get_eyes_r(); std::vector&lt;Rect&gt; get_eyes_l(); std::vector&lt;Rect&gt; get_noses(); std::vector&lt;Rect&gt; get_mouths(); Point2f get_P0(); Point2f get_P1(); Point2f get_P2(); Point2f get_P3(); }; </code></pre> <p>How Can I do? Because if I do like in my code, appears these errors:</p> <p>undefined reference to 'Almacena::~Almacena()' telo3 line 41, external location: C:\Users\telo\Desktop\ANDROID\android-ndk-r8d\toolchains\arm-linux-androideabi-4.6\prebuilt\windows\arm-linux-androideabi\bin\ld.exe: .\obj\local\armeabi\objs\nativo\nativo.o: in function Java_com_example_telo3_Process_inicializar_1nativo:jni\nativo.cpp C/C++ Problem</p> <p>undefined reference to 'Almacena::Almacena()' telo3 line 41, external location: C:\Users\telo\Desktop\ANDROID\android-ndk-r8d\toolchains\arm-linux-androideabi-4.6\prebuilt\windows\arm-linux-androideabi\bin\ld.exe: .\obj\local\armeabi\objs\nativo\nativo.o: in function Java_com_example_telo3_Process_inicializar_1nativo:jni\nativo.cpp C/C++ Problem</p>
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