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android set Id

·方案二：在res/values/下添加ids.xml(名字可随意)文件，代码如下：
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <item name="my_view" type="id" />
</resources>
然后在代码中做如下设置即可：
my_view.setId(R.id.my_view);
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