Android ListView每行具有不同的布局 [英] Android ListView with different layouts for each row

问题描述

我正在尝试确定拥有一个ListView的最佳方法，该ListView每行包含不同的布局.我知道如何创建自定义行+自定义数组适配器以支持整个列表视图的自定义行，但是如何在ListView中实现许多不同的行样式?

I am trying to determine the best way to have a single ListView that contains different layouts for each row. I know how to create a custom row + custom array adapter to support a custom row for the entire list view, but how can I implement many different row styles in the ListView?

推荐答案

由于您知道自己将拥有多少种布局-可以使用这些方法.

Since you know how many types of layout you would have - it's possible to use those methods.

getViewTypeCount()-此方法返回信息您列表中有多少种行

getViewTypeCount() - this methods returns information how many types of rows do you have in your list

getItemViewType(int position)-返回信息，您应该根据位置使用哪种布局类型

getItemViewType(int position) - returns information which layout type you should use based on position

然后仅在布局为空时才对其进行充气，并使用getItemViewType确定类型.

Then you inflate layout only if it's null and determine type using getItemViewType.

请参见 本教程 .

Look at this tutorial for further information.

要对您在评论中描述的结构进行一些优化，我建议:

To achieve some optimizations in structure that you've described in comment I would suggest:

• 将视图存储在名为ViewHolder的对象中.这将提高速度，因为您不必每次都在getView方法中调用findViewById().请参阅API演示中的 List14 .
• 创建一种通用布局，该布局将符合属性的所有组合，并在当前位置不存在的情况下隐藏一些元素.

• Storing views in object called ViewHolder. It would increase speed because you won't have to call findViewById() every time in getView method. See List14 in API demos.
• Create one generic layout that will conform all combinations of properties and hide some elements if current position doesn't have it.

希望对您有所帮助.如果您可以为XML存根提供数据结构和信息，并希望将其映射到行的精确程度，我将为您提供更精确的建议.按像素.

I hope that will help you. If you could provide some XML stub with your data structure and information how exactly you want to map it into row, I would be able to give you more precise advise. By pixel.

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