楼主解决问题了吗,我这也是原先就引用了ksoap2的包,后面一段时间要用到xstream,导入这个依赖后就build项目就不行了,一直报Duplicate class org.xmlpull.v1.XmlPullParser found in the following modules: ksoap2-android-assembly-3.3.0-runtime.jar (com.haotek.ksoap2:ksoap2-android-assembly:3.3.0), xmlpull-1.1.3.1.jar (xmlpull:xmlpull:1.1.3.1) and xpp3_min-1.1.4c.jar (xpp3:xpp3_min:1.1.4c),