AndroidのScrollViewの中でもうまくGridViewのScrollを効かす

gistfile1.java

        mGridView = (GridView) getView().findViewById(R.id.spotsView);
        mGridView.setOnTouchListener(new GridView.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                // ScrollViewの中でもうまくGridViewのScrollを効かす
                int action = event.getAction();
                switch (action) {
                    case MotionEvent.ACTION_DOWN:
                        v.getParent().requestDisallowInterceptTouchEvent(true);
                        break;

                    case MotionEvent.ACTION_UP:
                        v.getParent().requestDisallowInterceptTouchEvent(false);
                        break;
                }
                v.onTouchEvent(event);
                return true;
            }
        });