我有一个引用两个库项目的项目。将ADT和SDK工具升级到version17后,应用程序在遇到对某个库项目中定义的类的引用时立即崩溃。错误如:UnabletoresolvesuperclassofLcom/my/package/name/MyActivity;(118)Linkofclass'Lcom/my/package/name/MyActivity;'failedVFY:unabletofindclassreferencedinsignature(Lcom/my/package/name/MyActivity;)和:FATALEXCEPTION:mainjava.lang.Veri