http://www.kwstu.com/ArticleView/android_201410252131196692
错误描述：
Error: duplicate files during packaging of APK D:\work\workspace\XXXX\build\apk\XXX-debug-unaligned.apk
Execution failed for task ':XXXX:packageDebug'.
> Duplicate files copied in APK META-INF/LICENSE.txt
File 1: D:\work\workspace\ADControl\libs\fastjson-1.1.32.jarFile 2: D:\work\workspace\ADControl\libs\fastjson-1.1.32.jar
Error:: duplicate files during packaging of APK D:\work\workspace\XXX\build\apk\XXX-debug-unaligned.apk
Execution failed for task ':ADControl:packageDebug'.
> Duplicate files copied in APK META-INF/NOTICE.txt File 1: D:\work\workspace\ADControl\libs\fastjson-1.1.32.jar File 2: D:\work\workspace\ADControl\libs\fastjson-1.1.32.jar 解决方法：
在build.gradle的android节点添加
packagingOptions {
exclude 'META-INF/LICENSE.txt' exclude 'META-INF/NOTICE.txt' }