This version of the rendering library is more recent than your version of ADT plug-in. Please update

  This version of the rendering library is more recent than your version of ADT plug-in. Please update ADT plug-in

SDK版本过高，ADT版本过低。http://blog.csdn.net/g19920917/article/details/20289247 
 参考 http://jingyan.baidu.com/article/d621e8da0e0e052865913fae.html ,点击help选择install new software。In the Work with field,键入: https://dl-ssl.google.com/android/eclipse/
，然后打开layout文件中的.xml文件，修改SDK版本号