android鼠标滚轮事件监听方法

@Override
    public boolean onGenericMotionEvent(MotionEvent event) {
//The input source is a pointing device associated with a display.
//输入源为可显示的指针设备，如：mouse pointing device(鼠标指针),stylus pointing device(尖笔设备)
        if (0 != (event.getSource() & InputDevice.SOURCE_CLASS_POINTER)) {
            switch (event.getAction()) {
                // process the scroll wheel movement...处理滚轮事件
                case MotionEvent.ACTION_SCROLL:
                    //获得垂直坐标上的滚动方向,也就是滚轮向下滚
                    if (event.getAxisValue(MotionEvent.AXIS_VSCROLL) < 0.0f) {
                        LogUtils.d("fortest::onGenericMotionEvent down");
                       
                    }
                    //获得垂直坐标上的滚动方向,也就是滚轮向上滚
                    else {
                        LogUtils.i("fortest::onGenericMotionEvent up");
                        
                    }
                    
                    return true;
            }
        }
        return super.onGenericMotionEvent(event);
    }