向上滑动后，RecyclerView v23.2.0和空白 [英] RecyclerView v23.2.0 and blank space after swiping up

问题描述

我将支持库更新为23.2.0.并将recyclerView的高度更改为wrap_content，如博客

I updated the support library to 23.2.0. and changed the height of the recyclerView to wrap_content as explained in the blog here :

RecyclerView小部件为创建列表和网格以及支持动画提供了高级而灵活的基础.此版本为LayoutManager API带来了令人兴奋的新功能:自动测量！这使RecyclerView可以根据其内容的大小自行调整大小.这意味着以前不可用的方案(例如，将WRAP_CONTENT用于RecyclerView的尺寸)现在是可能的.您会发现所有内置的LayoutManager现在都支持自动测量.

The RecyclerView widget provides an advanced and flexible base for creating lists and grids as well as supporting animations. This release brings an exciting new feature to the LayoutManager API: auto-measurement! This allows a RecyclerView to size itself based on the size of its contents. This means that previously unavailable scenarios, such as using WRAP_CONTENT for a dimension of the RecyclerView, are now possible. You’ll find all built in LayoutManagers now support auto-measurement.

由于此更改，请确保仔细检查项目视图的布局参数:现在将完全尊重以前忽略的布局参数(例如，滚动方向上的MATCH_PARENT).

Due to this change, make sure to double check the layout parameters of your item views: previously ignored layout parameters (such as MATCH_PARENT in the scroll direction) will now be fully respected.

编辑/添加的注释:我必须这样做，因为在更新"match_parent"完成了应做的工作之后，它将cardviews的高度向下延伸到了底部，所以我最终每页只有一个cardview.

edited/added comment : I had to do this because after the update 'match_parent' did what it's supposed to do, it stretched the cardviews height down to the bottom, so I ended up having one cardview per page.

但是现在刷卡后，新创建的卡片视图之间又有了多余的空间.

But now after swiping up the newly created cardviews have the unwanted space between them again.

让我进一步澄清一下:

• 首次加载页面时，可以看到5张卡片视图，并且显示正确.
• 我向上滑动并显示一个新的Cardview号6
• 进一步刷卡会显示Cardview 7号，但6号和7号之间有空白
• 所有新创建的卡片视图之间都有很大的空白

有人遇到过这种行为吗?

Has anyone encountered this behavior ?

推荐答案

我发现了这个错误.

在卡片视图所在的布局文件中，我还必须将周围的RelativeLayout的layout_height属性修改为WRAP_CONTENT.

In the layout file where the cardview is in, I had to modify the surrounding RelativeLayout's layout_height attribute to WRAP_CONTENT as well.

有趣的是，我将RecyclerView的layout_height改回了MATCH_PARENT，它仍然可以按需工作.

Interesting part is, I changed the layout_height of RecyclerView back to MATCH_PARENT and it still worked as desired.

这篇关于向上滑动后，RecyclerView v23.2.0和空白的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！