SwipeGestureDetector.java

public class SwipeGestureDetector implements View.OnTouchListener {

    private GestureDetector gestureDetector;

    public SwipeGestureDetector(Context context) {
        gestureDetector = new GestureDetector(context, new GestureListener());
    }

    public SwipeGestureDetector() {
    }

    public void onSwipeUp() {
    }

    public void onSwipeDown() {
    }

    public boolean onTouch(View v, MotionEvent event) {
        return gestureDetector.onTouchEvent(event);
    }

    private final class GestureListener extends GestureDetector.SimpleOnGestureListener {

        private static final int SWIPE_DISTANCE_THRESHOLD = 100;
        private static final int SWIPE_VELOCITY_THRESHOLD = 100;

        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            float distanceX = e2.getX() - e1.getX();
            float distanceY = e2.getY() - e1.getY();
            if (Math.abs(distanceY) > Math.abs(distanceX) && Math.abs(distanceY) > SWIPE_DISTANCE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
                if (distanceY > 0)
                    onSwipeDown();
                else
                    onSwipeUp();
                return true;
            }
            return false;
        }
    }
}

Usage.java

 linearLayout.setOnTouchListener(new HoroscopeGestureDetector(context){
            @Override
            public void onSwipeDown() {
                //do something
                super.onSwipeDown();
            }

            @Override
            public void onSwipeUp() {
                //do something
                super.onSwipeUp();
            }
        });