添加枚举类型的declare-styleable时未生成Android R文件

Question

最近我的Android工作区不能正确编译了(R文件没有被创建)。在尝试了像清洁这样的常用方法之后，我开始更深入地搜索。我发现，当我用format="enum“注释掉类型为declare-styleable的attrs.xml文件中的项时，R文件是构建的，而不是当它们存在时(不是注释掉)。最近声明枚举的方式有什么变化吗？这里是该项目的一部分

工作中

<?xml version="1.0" encoding="utf-8"?>
<resources>

<declare-styleable name="SwipeListView">
    <attr name="swipeOpenOnLongPress" format="boolean" />
    <attr name="swipeAnimationTime" format="integer" />
    <attr name="swipeOffsetLeft" format="dimension" />
    <attr name="swipeOffsetRight" format="dimension" />
    <attr name="swipeCloseAllItemsWhenMoveList" format="boolean" />
    <attr name="swipeFrontView" format="reference" />
    <attr name="swipeBackView" format="reference" />
<!--         <attr name="swipeMode" format="enum"> -->
<!--             <enum name="none" value="0" /> -->
<!--             <enum name="both" value="1" /> -->
<!--             <enum name="right" value="2" /> -->
<!--             <enum name="left" value="3" /> -->
<!--         </attr> -->
<!--         <attr name="swipeActionLeft" format="enum"> -->
<!--             <enum name="reveal" value="0" /> -->
<!--             <enum name="dismiss" value="1" /> -->
<!--             <enum name="choice" value="2" /> -->
<!--         </attr> -->
<!--         <attr name="swipeActionRight" format="enum"> -->
<!--             <enum name="reveal" value="0" /> -->
<!--             <enum name="dismiss" value="1" /> -->
<!--             <enum name="choice" value="2" /> -->
<!--         </attr> -->
<!--         <attr name="swipeDrawableChecked" format="reference" /> -->
<!--         <attr name="swipeDrawableUnchecked" format="reference" /> -->
</declare-styleable>
</resources>

不工作

<?xml version="1.0" encoding="utf-8"?>

​

<declare-styleable name="SwipeListView">
    <attr name="swipeOpenOnLongPress" format="boolean" />
    <attr name="swipeAnimationTime" format="integer" />
    <attr name="swipeOffsetLeft" format="dimension" />
    <attr name="swipeOffsetRight" format="dimension" />
    <attr name="swipeCloseAllItemsWhenMoveList" format="boolean" />
    <attr name="swipeFrontView" format="reference" />
    <attr name="swipeBackView" format="reference" />
    <attr name="swipeMode" format="enum">
        <enum name="none" value="0" />
        <enum name="both" value="1" />
        <enum name="right" value="2" />
        <enum name="left" value="3" />
    </attr>
    <attr name="swipeActionLeft" format="enum">
        <enum name="reveal" value="0" />
        <enum name="dismiss" value="1" />
        <enum name="choice" value="2" />
    </attr>
    <attr name="swipeActionRight" format="enum">
        <enum name="reveal" value="0" />
        <enum name="dismiss" value="1" />
        <enum name="choice" value="2" />
    </attr>
    <attr name="swipeDrawableChecked" format="reference" />
    <attr name="swipeDrawableUnchecked" format="reference" />

</declare-styleable>

​

Answer 1

您是否尝试过在可声明样式的外部定义枚举，然后在可声明样式中使用不带任何格式的attr