一:在导入过程中出现There are unrecoverable errors which must be corrected first.
解决办法:找到eclipse项目中的project.properties,用文本编辑器打开,删除删除android.library.reference.1=../android-support-v7-appcompat,再重新导入
二:导入以后 代码出错,提示 cannot resolve symbol R
解决办法:file-->invalidate Caches/Restart