同步两个水平滚动视图的android [英] synchronize two horizontal scroll view android

问题描述

我有两个水平滚动查看每个都包含在它的线性布局项目。怎么可能同步滚动，当任它滚动，另一个也会自动滚动。任何帮助吗？

i have two horizontal scroll views each containing a linear layout item under it. how is it possible to synchronize the scroll, when either of it is scrolled, the other is also automatically scrolled. any help?

推荐答案

你可以做的是在第一个水平滚动视图的onTouch，记录它开始与下一个动作的X位置。然后，当你有移动的动作，记录在X位置的变化。然后，您可以拨打第二个水平滚动视图的scrollBy（DELTAX，0）。在最多的一个动作或取消，一定要重新设置您的状态变量。

What you could do is on the onTouch of the first Horizontal Scroll view, record the X position that it started with for an action of Down. Then when you have an action of Move, record the change in the X position. Then you can call the second horizontal scroll view's scrollBy (deltaX, 0). On an action of Up or Cancel, make sure to reset your state variables.

我有一个列表视图滚动垂直滚动只使用Y位置，而不是十，这是我的code做到这一点做到了这一点。该concurrentScroller是我的俯视图。

I've done this with a List View scrolling a vertical scroll, just using Y positions instead of X. Here is my code to accomplish this. The concurrentScroller is my vertical view.

if(concurrentScroller != null) {
            int deltaY = (int) (startTouchConcurrentY - ev.getY());
            startTouchConcurrentY = ev.getY();
            concurrentScroller.scrollBy(0, deltaY);                             
        } 

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