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下載完OpenCV for Android之後，需要run些 sample code來確定環境是否設定正確

5/11, 2014

每次加新專案進eclipse都一堆錯，記下需要做哪裡設定

android for opencv project1

若沒有libs, 右鍵android tools - add support library，順便複製某個專案裡面的armeabi-v7a or armeabi or x86，複製哪一個端看Android.mk
C/C++ build - environment - add : NDKROOT - C:\android-ndk-r9d

Android.mk : * include $(CLEAR_VARS)
OPENCV_CAMERA_MODULES: =on
OPENCV_INSTALL_MODULES: =on
OPENCV_LIB_TYPE:=SHARED
include C:\adt-bundle-windows-x86-20130917\OpenCV-2.4.9-android-sdk\sdk\native\jni\OpenCV.mk

以 Tutorial 2 – Mixed Processing 為例

去除OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback);

註解掉這個方法 private BaseLoaderCallback mLoaderCallback
新增

static {
         Log.i(TAG,"OpenCV library load!");
         if(!OpenCVLoader.initDebug()){
              Log.i(TAG,"OpenCV load not successfully");
         }else {

  System.loadLibrary("opencv_java");

              System.loadLibrary("nonfree");
              System.loadLibrary("mixed_sample");←引用哪個library查看mLoaderCallback方法
         }
    }
在onCreate()方法中兩行中加入

mOpenCvCameraView =CameraBridgeViewBase)findViewById(R.id.tutorial2_activity_surface_view);
mOpenCvCameraView.enableView();
mOpenCvCameraView.setCvCameraViewListener(this);
在onResume方法註解
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback);

使用SiftFeatureDetector

複製可以跑SiftFeatureDetector專案的libnonfree.so與libopencv_java.so至jni資料夾
#include <opencv2/features2d/features2d.hpp> 換成

#include <opencv2/nonfree/features2d.hpp>

#include <opencv2/nonfree/nonfree.hpp>
Android.mk 改成
include $(CLEAR_VARS)

OPENCV_CAMERA_MODULES: =on

OPENCV_INSTALL_MODULES: =on

OPENCV_LIB_TYPE:=SHARED

include C:\adt-bundle-windows-x86-20130917\OpenCV-2.4.9-android-sdk\sdk\native\jni\OpenCV.mk

include $(CLEAR_VARS)

LOCAL_MODULE    : = nonfree_prebuilt

LOCAL_SRC_FILES := libnonfree.so

include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)

LOCAL_MODULE    : = opencv_java_prebuilt

LOCAL_SRC_FILES := libopencv_java.so

include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)

#Modify LOCAL_C_INCLUDES with your path to OpenCV for Android.

LOCAL_C_INCLUDES:= C:\adt-bundle-windows-x86-20130917\OpenCV-2.4.9-android-sdk\sdk\native\jni\include

LOCAL_MODULE    : = mixed_sample

LOCAL_CFLAGS    : = -Werror -O3 -ffast-math

LOCAL_SHARED_LIBRARIES : = nonfree_prebuilt opencv_java_prebuilt

LOCAL_SRC_FILES := jni_part.cpp

LOCAL_LDLIBS += -llog -ldl

include $(BUILD_SHARED_LIBRARY)

以上都是歷史紀錄，若有遇上問題，會再補充說明

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