android - 如何为 ExpandableListView 设置组分隔线颜色

Question

我可以使用 childDivider 属性（在本例中为黑色）为孩子设置分隔符颜色。但是，我看不到任何设置折叠组之间分隔线颜色的方法。系统似乎显示了一条 1px 的白线。

Answer 1

The color of the divider line when a group is closed can be set via:

android:divider

The color of the divider lines when a group is opened aka. the child is visible can be set via:

android:childDivider

Answer 2

对于组：

<item name="android:groupIndicator">@android:drawable/expander_group</item>

为儿童：

<item name="android:childDivider">@android:drawable/divider_horizontal_dark_opaque</item>

---

所有 ExpandableListView 特征：

<style name="Widget.ExpandableListView" parent="Widget.ListView">
    <item name="android:groupIndicator">@android:drawable/expander_group</item>
    <item name="android:indicatorLeft">?android:attr/expandableListPreferredItemIndicatorLeft</item>
    <item name="android:indicatorRight">?android:attr/expandableListPreferredItemIndicatorRight</item>
    <item name="android:childDivider">@android:drawable/divider_horizontal_dark_opaque</item>
</style>

<style name="Widget.ExpandableListView.White">
    <item name="android:childDivider">@android:drawable/divider_horizontal_bright_opaque</item>
</style>