+ Android的web视图 - 如何自动滚动页面？ [英] +Android Webview - how to autoscroll a page?

问题描述

我想在web视图中打开HTML页面并使其按照间隔通过定时器设置自动向下滚动自动。

I'd like to open a html-page in a webview and make it auto-scroll downwards automatically in accordance with an interval set through a timer.

虽然下面的例子是桌面，这个环节应该给你一个想法是什么我想实现（使在页面的右上部分自动滚动）：

Although below example is for desktop, this link should give you an idea what I want to achieve (enable autoscrolling in the upper right part of the page):

例如

首先，我想过开一个网页，然后使用某种code这将模拟/触发DPAD向下（或箭头向下）。在Windows Mobile的，我相信有一些所谓的SendKeys，但我找不到在Android的SDK类似的东西（除了测试-SDK，我怀疑我可以使用发布我的Andr​​oidMarket的应用程序），所以我想提到的方法以上是不可能的。

First I thought about opening a webpage and then use some kind of code which would simulate/trigger DPAD-down (or Arrow-down). In Windows Mobile, I believe there was something called SendKeys but I couldn't find something similar in the Android-SDK (except for a test-SDK which I doubt I could use for publishing my app in AndroidMarket) so I guess the way mentioned above is not possible.

另一种解决办法或许是一个java脚本，但网页不是由我创造，所以我不能插入任何锚。

Another solution could perhaps be a java-script but the webpages are not created by me so I can't insert any anchor.

不过，我注意到，web视图有一些方法被称为下页（和PageUp键），它也可能是一个解决方案，但恐怕下页将太多的滚动我想要的方式。我想滚动很慢流畅，更像是一条线的时间。

However, I noted that Webview has some methods called PageDown (and PageUp) which could also be a solution but I am afraid a PageDown would be too much for scrolling the way I want. I want the scrolling to be slow and smooth, more like a line at a time.

你有任何想法如何，我可以实现这个？我真的AP preciate你的帮助。

Do you have any ideas how I could implement this? I'd really appreciate your help.

推荐答案

您可以尝试使用， View.scrollBy（INT X，int y）对滚动的WebView 。

用途：
  computeVerticalScrollOffset（）
computeVerticalScrollExtent（）
computeVerticalScrollRange（）来计算最大的y值。

You could try using, View.scrollBy(int x, int y) to scroll the WebView.

Use:
computeVerticalScrollOffset(),
computeVerticalScrollExtent()
computeVerticalScrollRange() to calculate a maximum y value.

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