Android 问题:Attribute ＂xxx＂ has already been defined

最新推荐文章于 2024-05-06 17:44:01 发布
最新推荐文章于 2024-05-06 17:44:01 发布
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在团队合作开发Android应用时，可能出现自定义类属性名重复导致的警告。当两个类定义了相同属性名时，系统警告'Attribute "xxx" has already been defined'。解决方法是在values文件夹的attrs.xml中先声明属性，然后在各个属性集合中引用已声明的属性，避免直接定义。通过此方式，可以解决不同类中相同属性名的冲突问题。

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如果从单独开发app的话，可能不会遇到多个自定义类的attribute 的名字重复的问题。但是如果是团队合作开发的话，可能会碰到这样的问题，A和B自定义的两个类都用了同一个名字来定义属性，这时系统会报出警告，Attribute "xxx" has already been defined. A和B又都不想修改自己的名字，这时就很头痛。

下面举个例子，在values文件夹下定义一个上面的attrs.xml的文件，eclipse即会报错：Attribute "icon" has a
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