Using default BaseLoaderCallback in an android service

edit

Well, I seem to have figured it out.

You need to call initAsync in onStartCommand

if(OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_4, getApplicationContext(), mLoaderCallback)) {
        Log.i(TAG, "Loaded OpenCV");
    }
    else
        Log.i(TAG, "Couldn't load OpenCV");

Wait about 1.5 seconds before you use OpenCV libraries for them to be loaded. You could use a delayed runnable.

Also make sure you override the finish() function of the BaseLoaderCallback.

BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(
        WDMRService.this) {
    @Override
    public void onManagerConnected(int status) {
        switch (status) {
        case LoaderCallbackInterface.SUCCESS: {
            Log.i("", "OpenCV loaded successfully");
        }
            break;
        default: {
            super.onManagerConnected(status);
        }
            break;
        }
    }

    @Override
    public void finish() {
        // implementing own finish method since openCV treats context as
        // activity
    }
};

If you're not going to use OpenCV once the service is destroyed, you should unbind the OpenCV service in finish(). It will work even if you don't, but it is better if you do. I don't because I require OpenCV after the service is destroyed too.