解决error retriving parent for item
In "android-support-v7-appcompat" project:
- Delete “android-support-v7-appcompat” from Package explorer.
- Import again and check “Copy into workspace”
- In Properties -> Android -> in Project build target, uncheck Android 2.2 and check Android 4.1.2
- In Java build path, uncheck if you have any .jar library, and uncheck the Dependences
In other hand, the project that uses “android-support-v7-appcompat”:
- In Properties -> Android add the library, but uncheck "IsLibrary”.
- In Android -> Project build tarjet check Android 4.0.
- In "Java Build Path" -> Order and Export -> Unchecked the .jar library
- Finally do a “Project -> Clean” both projects
解决error retriving parent for item
原文：http://www.cnblogs.com/mengyuanyuan/p/4975896.html
