设置Android PopupMenu分界线的样式 [英] Styling Android PopupMenu Divider Lines

问题描述

我在应用程序中使用了两个PopupMenu，它们均按预期工作

I'm using a couple of PopupMenus in my app and they all working as expected

但是我想用白线将各个项目分开，但是我找不到要在何处设置此项目.我希望可以访问底层的ListView，但这似乎是不可能的.我也看不到与分隔线相关的样式项.

But I would like to have white lines separating the individual items, but I can't find where I'm meant to be setting this. I was hoping I could get to the underlying ListView but that doesn't seem to be possible. I can't see an style item that relates to the divider line either.

这可能吗，应该在哪里/如何设置?

Is this possible, where/how should I be setting this?

推荐答案

我已经能够使用以下技术更新PopupMenu上的分隔线颜色(基于此答案的线索https://stackoverflow.com/a/40017199/285190 )

I've been able to update the divider colour on a PopupMenu using the following technique (based on clues from this answer https://stackoverflow.com/a/40017199/285190)

创建如下样式...

<style name="popupMenuStyle" >
    <item name="android:textColor">#ffffff</item>
    <item name="android:itemBackground">#000000</item>
    <item name="android:divider">#eaeaea</item>
    <item name="android:dividerHeight">1dp</item>
</style>

然后在创建菜单时创建一个上下文包装器

Then when you create the menu create a context wrapper

Context wrapper = new ContextThemeWrapper(mContext, R.style.popupMenuStyle);
PopupMenu popup = new PopupMenu(wrapper, sourceView);

这确实显示了一条分隔线，但是菜单的高度似乎并未正确计算以包含新的分隔线，并显示了垂直滚动条.

This does show a dividing line, BUT the height of the menu doesn't appear to be calculated correctly to include the new divider and a vertical scrollbar is displayed.

如果有人知道原因，请添加评论

If anyone knows the reason please add a comment

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