Android項目引用2個以上library project 時的報錯，androidlibrary

Android項目引用2個以上library project 時的報錯，androidlibrary

[2012-11-24 11:33:58 - myProject] Found 2 versions of android-support-v4.jar in the dependency list,
[2012-11-24 11:33:58 - myProject] but not all the versions are identical (check is based on SHA-1 only at this time).
[2012-11-24 11:33:58 - myProject] All versions of the libraries must be the same at this time.
[2012-11-24 11:33:58 - myProject] Versions found are:
[2012-11-24 11:33:58 - myProject] Path: E:\adt-bundle-windows-x86-20131030\eclipse\d\workspace\TestAndroidHelper\libs\android-support-v4.jar
[2012-11-24 11:33:58 - myProject]  Length: 627582
[2012-11-24 11:33:58 - myProject]  SHA-1: db0f122c99ef9f90dbab3fada6d191f2880cbb8e
[2012-11-24 11:33:58 - myProject] Path: E:\Project\架構項目\my-dynamicload\myProjectDL\myMobilePay_out\libs\android-support-v4.jar
[2012-11-24 11:33:58 - myProject]  Length: 484258
[2012-11-24 11:33:58 - myProject]  SHA-1: bd6479f5dd592790607e0504e66e0f31c2b4d308
[2012-11-24 11:33:58 - myProject] Jar mismatch! Fix your dependencies

 

錯誤記錄檔：如上；

錯誤現象：主工程libs下的jar包在build path -> Libraries 的Android Private Libraries下全部消失；

錯誤原因：主工程引用的2個library project中，都用到了不同版本的相同jar包，造成主工程這裡發生衝突。

錯誤解決：2個library project的其中1個，在build path -> Libraries 的Order and Export中不匯出上述引發衝突的jar包即可。