在JNI中创建一个c++类的元素

Question

我想创建一个自己的c++类的元素。JNI函数:

JNIEXPORT void JNICALL Java_com_example_telo3_Process_inicializar_1nativo
  (JNIEnv *, jobject){
Almacena almacena;
}

Almacena是一个c++类:

#pragma once
#include <opencv2/objdetect/objdetect.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <iostream>
#include <stdio.h>
using namespace std;
using namespace cv;
class Almacena
{
private:
    std::vector<Rect> myfaces;
    std::vector<Rect> myeyes_r;
    std::vector<Rect> myeyes_l;
    std::vector<Rect> mynoses;
    std::vector<Rect> mymouths;
    Point2f P0;
    Point2f P1;
    Point2f P2;
    Point2f P3;

public:
    Almacena(void);
    ~Almacena(void);
    void set_faces(std::vector<Rect> faces);
    void set_eyes_r(std::vector<Rect> eyes_r);
    void set_eyes_l(std::vector<Rect> eyes_l);
    void set_noses(std::vector<Rect> noses);
    void set_mouths(std::vector<Rect> mouths);
    void set_P0(Point2f aux);
    void set_P1(Point2f aux1);
    void set_P2(Point2f aux2);
    void set_P3(Point2f aux3);
    std::vector<Rect> get_faces();
    std::vector<Rect> get_eyes_r();
    std::vector<Rect> get_eyes_l();
    std::vector<Rect> get_noses();
    std::vector<Rect> get_mouths();
    Point2f get_P0();
    Point2f get_P1();
    Point2f get_P2();
    Point2f get_P3();
};

我该怎么做?因为如果我想在我的代码中出现这些错误:

未定义的引用'Almacena::~Almacena()' telo3 line 41，外部位置:C:UsersteloDesktopANDROIDandroid-ndk-r8dtoolchainsarm-linux-androideabi-4.6prebuiltwindowsarm-linux-androideabibin rd .exe: .objlocalarmeabiobjs native native .exe。0: in function java_com_example_telo3_process_initializar_1nativo:jninativo.cpp C/c++ Problem

对'Almacena::Almacena()'的未定义引用telo3第41行，外部位置:C:UsersteloDesktopANDROIDandroid-ndk-r8dtoolchainsarm-linux-androideabi-4.6prebuiltwindowsarm-linux-androideabibin rd .exe: .objlocalarmeabiobjs native native。0: in function java_com_example_telo3_process_initializar_1 nativo:jninativo.cpp C/c++ Problem

Answer 1

在你的Android.mk中，你应该有

LOCAL_SRC_FILES := nativo.cpp 
   Almacena.cpp 
   ... all other cpp files