先來(lái)看一個(gè)自定義屬性重復(fù)的例子：

attrs.xml

<resources>
    <declare-styleable name="View1">
        <attr name="title_color" format="color" />
    </declare-styleable>

    <declare-styleable name="View2">
        <attr name="title_color" format="color" />
    </declare-styleable>
</resources>

這樣會(huì)報(bào)錯(cuò)如下：
Found item Attr/color_type more than one time

解決辦法也很簡(jiǎn)單，把相同的屬性抽出來(lái)定義就可以。

<resources>
    <attr name="title_color" format="color" />

    <declare-styleable name="View1">
        <attr name="title_color" />
     </declare-styleable>

    <declare-styleable name="View2">
        <attr name="title_color" />
    </declare-styleable>
</resources>