向下/向上滑动会移动多少垂直的垂直RecyclerView /列表？ [英] How much would a swipe down/up move a normal vertical RecyclerView/list?

问题描述

假设我使用以下命令：

adb shell input touchscreen swipe x1 y1 x1 y2 50 

我怎么知道它将真正滚动多少像素？

How can I know how much pixels will it really scroll?

有什么方法可以计算？

Is there any way to calculate it?

推荐答案

持续时间参数的默认值设置为 300毫秒是有原因的-除此之外，您的滑动更有可能成为猛击（也取决于坐标的增量）-不会精确和/或一致。

The default value of the duration parameter is set to 300ms for a reason - anything less than that and your swipe has a much higher chance to become a fling (also depending on the delta of your coordinates) - which will not be precise and/or consistent.

所以没有办法找出您的特定（即比建议的持续时间短）命令将提前滚动多少像素。

So there is no way to find out how many pixels your specific (i.e. with shorter than recommended duration) command will scroll ahead of time.

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