根据列表中最长的文本更改 ListView 分隔线长度 [英] Change ListView divider length based on longest Text in List

问题描述

我一直在查看 Stackoverflow 上的内容，但不知道如何执行此操作.

I've been looking at things on Stackoverflow and cannot find out how to do this.

我想要的是这样的:

    xxxxxxxx
    --------
    xxxx
    --------
    xx

代替平常

    xxxxxxxx
    ----------------------------------- (until end of screen)
    xxxx
    -----------------------------------
    xx

我想知道是否有一种非常简单的方法可以做到这一点.

I wonder if there is an really easy way to do it.

我认为这涉及到更改右边距，但就我所知.

I figure it involves changing the right margin but that's about as far as I got.

顺便说一下，我正在运行时创建我的 ListViews.

I am creating my ListViews at run-time by the way.

推荐答案

由于您不能直接以编程方式更改分隔线宽度，我建议编写一个适配器来获取您的字符串列表.Adapter 将由一个 TextView 和一个 ImageView(最好)组成.

Since you can't directly change divider width programmatically, I suggest writing an adapter which takes your string list. Adapter will be consisting of one TextView and one ImageView(preferably).

在适配器中，您可以比较字符串并获得最长的字符串.获取该最长字符串的估计宽度；

In the adapter you can compare strings and get the longest one. Get estimated width for that longest string by;

String longestText = "longestword";
Paint paint = new Paint();
float widthValue = paint.measureText(longestText);

(这会给你以像素为单位的结果)在获得这个值后，你可以简单地在 textview 下放置一个 (height=x , width=widthValue) 的图像视图.

(that will give you the result in pixels) And after getting this value, you can simply put an imageview of (height=x , width=widthValue) under the textview.

然后从 xml 中的列表视图中删除分隔线；

Then remove the divider from your listview in xml by;

android:divider="@android:color/transparent"

您可以随时使用您想要的视图.

and your view as you desire is ready to use.

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