不能在安卓原生 c++ 中使用自定义类对象的向量

我正在使用Opencv和android Ndk开发一个图像处理应用程序。首先，我在visual studio中编写代码，没有任何问题。我有标题roi.hpp和roi.cpp:roi.hpp:

 #ifndef ROI 
 #define ROI

  #include <....imgproc.hpp>
  #include <....opencv.hpp>
  using namespace cv;
 class My_ROI{
   public:
    My_ROI();
    My_ROI(const My_ROI &my_roi);
    My_ROI(Point upper_corner, Point lower_corner,Mat src);
    Point upper_corner, lower_corner;
    Mat roi_ptr;
    Scalar color;
    int border_thickness;
    void draw_rectangle(Mat src);
};

#endif

roi.cpp:

              #include "myImage.hpp"
              #include <....imgproc.hpp>
             #include <....opencv.hpp>
             #include <....highgui.hpp>
               #include <stdio.h>
              #include <stdlib.h>
             #include <string>
             #include "roi.hpp"
    using namespace cv;
   using namespace std;
  My_ROI::My_ROI(const My_ROI &my_roi)
     {
        int i;
       // allocate variables
        My_ROI();
        // copy values
            operator = (my_roi);
         }
     My_ROI::My_ROI(){
        upper_corner=Point(0,0);
        lower_corner=Point(0,0);
           }
        My_ROI::My_ROI(Point u_corner, Point l_corner, Mat src){
        upper_corner=u_corner;
        lower_corner=l_corner;
        color=Scalar(0,255,0);
        border_thickness=2;
        roi_ptr=src(Rect(u_corner.x, u_corner.y, l_corner.x- u_corner.x,l_corner.y-    u_corner.y));
      }
     void My_ROI::draw_rectangle(Mat src){
    rectangle(src,upper_corner,lower_corner,color,border_thickness);
    }

和在另一个类我做了一个向量的My_ROI和使用它没有问题，像这样:

            vector <My_ROI> roi;
            for (int j = 0; j<NSAMPLES; j++){
            roi[j].draw_rectangle(m->src);
         }

然后我将我的项目移植到android，我使用roi.hpp和roi.cpp作为外部c++文件，这是我的android.mk:

LOCAL_PATH := $(call my-dir)
 include $(CLEAR_VARS)
OPENCV_CAMERA_MODULES := on 
OPENCV_INSTALL_MODULES := on
OPENCV_LIB_TYPE:=STATIC
include ../../jni/OpenCV.mk
LOCAL_MODULE := hello-jni
LOCAL_SRC_FILES := hello-jni.cpp
LOCAL_SRC_FILES += ../../external_cpp/makegray.cpp
LOCAL_SRC_FILES += ../../external_cpp/roi.cpp
LOCAL_C_INCLUDES += $(LOCAL_PATH)/../../external_cpp
LOCAL_LDLIBS     += -llog -ldl

include $(BUILD_SHARED_LIBRARY)

application.mk:

APP_STL := gnustl_static
APP_CPPFLAGS := -frtti -fexceptions
APP_ABI := armeabi-v7a
APP_PLATFORM := android-8

最后在hello-jni。cpp文件中我想使用roi向量:

#include <jni.h>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <android/log.h>
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <opencv2/opencv.hpp>

#include "../../external_cpp/roi.hpp"
 vector <My_ROI> roi;
void fillROIArray(MyImage *m,Mat& mRgb,Mat& mGray)
 {
m->src=mRgb;
    flip(m->src,m->src,1);//reverse the order of rows or cols in a matrix
//  My_ROI *f1 = new My_ROI;
//  roi.push_back(*f1);
    roi.push_back(My_ROI(Point(m->src.cols/3, m->src.rows/6),Point(m->src.cols/3+square_len,m->src.rows/6+square_len),m->src));
    roi.push_back(My_ROI(Point(m->src.cols/4, m->src.rows/2),Point(m->src.cols/4+square_len,m->src.rows/2+square_len),m->src));
    roi.push_back(My_ROI(Point(m->src.cols/3, m->src.rows/1.5),Point(m->src.cols/3+square_len,m->src.rows/1.5+square_len),m->src));
    roi.push_back(My_ROI(Point(m->src.cols/2, m->src.rows/2),Point(m->src.cols/2+square_len,m->src.rows/2+square_len),m->src));
    roi.push_back(My_ROI(Point(m->src.cols/2.5, m->src.rows/2.5),Point(m->src.cols/2.5+square_len,m->src.rows/2.5+square_len),m->src));
    roi.push_back(My_ROI(Point(m->src.cols/2, m->src.rows/1.5),Point(m- >src.cols/2+square_len,m->src.rows/1.5+square_len),m->src));
    roi.push_back(My_ROI(Point(m->src.cols/2.5, m->src.rows/1.8),Point(m->src.cols/2.5+square_len,m->src.rows/1.8+square_len),m->src));
    mGray=m->src;
}
    void myMethod(Image &m)
    {

    for (int j = 0; j<NSAMPLES; j++){
        roi[j].draw_rectangle(m->src);
    }
}

但是出现错误:

 method draw_rectangle(...) couldn't be resolved!

我可以访问我的roi对象的所有成员，但当我使这个类的向量，我不能访问它的成员!我搜索了很多关于自定义类的矢量，这是几天我正在努力解决这个问题，但我不能。

任何帮助真的很感激。问候。