Android 和OpenCV整合開發(2)---去除OpenCV Manager包的方法

以修改FaceDetection例子工程為例>

• 1，修改makefile【Android.mk】（在jni目錄下）

• OpenCV_CAMERA_MODULES:=on
  OpenCV_INSTALL_MODULES:=on
  OpenCV_LIB_TYPE:=SHARED
  include ${OpenCVROOT}/sdk/native/jni/OpenCV.mk

  2，修改FdActivity.java文件 <1>增加靜態函數

  static {
   Log.i(TAG,"OpenCV library load!");
   if (!OpenCVLoader.initDebug()) {
   Log.i(TAG,"OpenCV load not successfully");
   } else {
   System.loadLibrary("detection_based_tracker");// load other libraries
  }
  }

  <2>刪除FdActivity.java的OnResume()方法的最後那句，不讓它去訪問OpenCV Manager

  @Override
  public void onResume() {
  super.onResume();
  //OpenCVLoader.initAsync(OpenCVLoader.OpenCV_VERSION_2_4_3, this, mLoaderCallback);//
  }

  <3>修改FdActivity.java的OnCreate()方法

  public void onCreate(Bundle savedInstanceState) {
   Log.i(TAG,"called onCreate");
  super.onCreate(savedInstanceState);
  getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
  
  setContentView(R.layout.face_detect_surface_view);
  
  // add start
   try {
   // load cascade file from application resources
   InputStream is = getResources().openRawResource(R.raw.lbpcascade_frontalface);
   File cascadeDir = getDir("cascade", Context.MODE_PRIVATE);
   mCascadeFile = new File(cascadeDir,"lbpcascade_frontalface.xml");
   FileOutputStream os = new FileOutputStream(mCascadeFile);
  
   byte[] buffer = new byte[4096];
   int bytesRead;
   while ((bytesRead = is.read(buffer)) != -1) {
   os.write(buffer, 0, bytesRead);
  }
  is.close();
  os.close();
  
   mJavaDetector = new CascadeClassifier(mCascadeFile.getAbsolutePath());
   if (mJavaDetector.empty()) {
   Log.e(TAG,"Failed to load cascade classifier");
   mJavaDetector = null;
   } else
   Log.i(TAG,"Loaded cascade classifier from"+ mCascadeFile.getAbsolutePath());
  
   mNativeDetector = new DetectionBasedTracker(mCascadeFile.getAbsolutePath(), 0);// hujiawei
  
  cascadeDir.delete();
  
   } catch (IOException e) {
  e.printStackTrace();
   Log.e(TAG,"Failed to load cascade. Exception thrown:"+ e);
  }
  
  //add end
  
   mOpenCVCameraView = (CameraBridgeViewBase) findViewById(R.id.fd_activity_surface_view);
  mOpenCVCameraView.enableView();// add.
  mOpenCVCameraView.setCvCameraViewListener(this);
  }