安卓opencv加载模型

//加载opencv模型
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
    @Override
    public void onManagerConnected(int status) {
        switch (status) {
            case LoaderCallbackInterface.SUCCESS: {
                Log.i(TAG, "OpenCV loaded successfully");
                try {
                    // load cascade file from application resources
                    InputStream is = getResources().openRawResource(R.raw.haarcascade_frontalface_alt2);
                    File cascadeDir = getDir("haarcascades", Context.MODE_PRIVATE);
                    File mCascadeFile = new File(cascadeDir, "haarcascade_frontalface_alt2.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();

                    cascadeClassifier = new CascadeClassifier(mCascadeFile.getAbsolutePath());
                    if (cascadeClassifier.empty()) {
                        Log.e(TAG, "Failed to load cascade classifier");
                        cascadeClassifier = null;
                    } else
                        Log.i(TAG, "Loaded cascade classifier from " + mCascadeFile.getAbsolutePath());
                    cascadeDir.delete();
                } catch (IOException e) {
                    e.printStackTrace();
                    Log.e(TAG, "Failed to load cascade. Exception thrown: " + e);
                }
            }
            break;
            default: {
                super.onManagerConnected(status);
            }
            break;
        }
    }
};

@Override
protected void onResume() {
    super.onResume();
    if (!OpenCVLoader.initDebug()) {
        Log.d(TAG, "Internal OpenCV library not found. Using OpenCV Manager for initialization");
        OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION, this, mLoaderCallback);
    } else {
        Log.d(TAG, "penCV library found inside package. Using it!");
        mLoaderCallback.onManagerConnected(LoaderCallbackInterface.SUCCESS);
    }

}

调用这个方法就可以了，注意加载的模型版本号是否正确，否则会报错