public void setOnScollChangedListener(OnScollChangedListener onScollChangedListener) {
  this.onScollChangedListener = onScollChangedListener;
}

@Override
protected void onScrollChanged(int x, int y, int oldx, int oldy) {
  super.onScrollChanged(x, y, oldx, oldy);
  if (onScollChangedListener != null) {
    onScollChangedListener.onScrollChanged(this, x, y, oldx, oldy);
  }
}

public interface OnScollChangedListener {

  void onScrollChanged(ObservableScrollView scrollView, int x, int y, int oldx, int oldy);

}

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
  switch (ev.getAction()) {
  case MotionEvent.ACTION_DOWN:
    xDistance = yDistance = 0f;
    xLast = ev.getX();
    yLast = ev.getY();
    break;
  case MotionEvent.ACTION_MOVE:
    final float curX = ev.getX();
    final float curY = ev.getY();

    xDistance += Math.abs(curX - xLast);
    yDistance += Math.abs(curY - yLast);
    xLast = curX;
    yLast = curY;

    /**
     * X轴滑动距离大于Y轴滑动距离，也就是用户横向滑动时，返回false，ScrollView不处理这次事件，
     * 让子控件中的TouchEvent去处理，所以横向滑动的事件交由子控件处理， ScrollView只处理纵向滑动事件
     */
    if (xDistance > yDistance) {
      return false;
    }
  }

  return super.onInterceptTouchEvent(ev);
}
}