activity_main cannot be resolved or is not a field
2016-08-02 11:09
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今天编程的时候莫名其妙在setContentView(R.id.activity_main);这里报错，提示是activity_main cannot be resolved or is not a field，可以change to activity_list什么，但这样以来自己的文件里那些id就无法使用了
又回过头看，明明有这个xml文件
后来才发现是导入包的时候不知怎么的导入了一个R包，将原本的给覆盖了，因此才会报错，把这个包删了即可
又回过头看，明明有这个xml文件
后来才发现是导入包的时候不知怎么的导入了一个R包，将原本的给覆盖了，因此才会报错，把这个包删了即可
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