android点滴4:main cannot be resolved or is not a ...
main cannot be resolved or is not a fiel java
错误产生在R.layout.main这条语句上，并且后面的关于R.java的有些内容引用不了，好比id等 android
可能的缘由是好比xml文件或者资源文件时，系统自动添加了import android.R;android.R是系统提供的资源，R是应用程序的资源。这时候只要删除 import android.R;这条语句就能够了。 spa
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