Vertical ScrollView that allows for horizontal scrolling children.

CustomScrollView.java

public class CustomScrollView extends ScrollView {

  private GestureDetector mGestureDetector;

	public CustomScrollView(Context context, AttributeSet attrs) {
		super(context, attrs);
		mGestureDetector = new GestureDetector(context, new YScrollDetector());
		setFadingEdgeLength(0);
	}

	@Override
	public boolean onInterceptTouchEvent(MotionEvent ev) {
		return super.onInterceptTouchEvent(ev) && mGestureDetector.onTouchEvent(ev);
	}

	// Return false if we're scrolling horizontally.
	class YScrollDetector extends SimpleOnGestureListener {
		@Override
		public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
			if (Math.abs(distanceY) > 3 * Math.abs(distanceX)) {
				return true;
			}
			return false;
		}
	}

}