Eclipse新建工程编译R cannot be resolved to a variable问题
新建工程编译提示R cannot be resolved to a variable
图1
然后打开SDK Manager管理器，下载并安装Android SDK Build-tools
图2
然后重新编译OK
Eclipse新建工程编译R cannot be resolved to a variable问题
原文：http://blog.csdn.net/loongembedded/article/details/49944959
