原文 http://www.cnblogs.com/hakuci/archive/2010/11/15/1877659.html
You’ve just installed Eclipse , and attempted to create your first
Android Application. When clicking create, you see an error similar to
this: "Error: Unable to open class file R.java
"
如果出现 “Error:
Unable to open class file R.java No such file or directory”。
Solution:解决方法:
The “Build Path” for your Java environment is not setup correctly in Eclipse. To fix this, follow these steps:
1) Open the Preferences Window by clicking “Window -> Preferences”
2) Find the “Java”
section and expand it
3) Select “Build Path
”
4) Change the value of Source and output folder from Folders to “Project”
5) Click Apply and then “OK
”
Your problem should be resolved!
勾选“Project”
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