I just copied all the codes from the sample project that is included here.

@Override
protected void onResume() {
super.onResume();
qReader.initAndStart(surfaceView);
}`

@Override
protected void onPause() {
super.onPause();
qReader.releaseAndCleanup();
}`

I think there's something wrong about the SurfaceView, currently tested on Kitkat and Marshmallow both have the same error.

-Thanks