android打包引用第三方jar出现的错误

今天终于完成了近一个月的App开发工作，对程序进行混淆导出签名apk包时，却出现了如下的错误： Proguard returned with error code 1. See console Note: there were 4 duplicate class definitions. Warning: library class android.content.res.XmlResourceParser extends or implements program class org.xmlpull.v1.XmlPullParser Warning: library class android.content.Intent depends on program class org.xmlpull.v1.XmlPullParser 。。。 心里想着，真是好事多磨呀！ 那就赶紧问度娘呀，终于在一位网友那里找到了答案。 对于Android导入了第三方jar包时，proguard混淆脚本会出现错误，而出现上面的错误是因为程序中引入了第三方jar包[ksoap2-android-assembly-2.6.5-jar-with-dependencies.jar]，二话不说，立马行动： 在proguard-project.txt中增加了 -ignorewarnings -libraryjars lib/ksoap2-android-assembly-2.5.4-jar-with-dependencies.jar （jar包路径） 即在文件中增加了如下红色的两行： -dontusemixedcaseclassnames -dontskipnonpubliclibraryclasses -verbose -ignorewarnings # Optimization is turned off by default. Dex does not like code run # through the ProGuard optimize and preverify steps (and performs some # of these optimizations on its own). -dontoptimize #-dontoptimize # Note that if you want to enable optimization, you cannot just # include optimization flags in your own project configuration file; # instead you will need to point to the # "proguard-android-optimize.txt" file instead of this one from your # project.properties file. -libraryjars libs/ksoap2-android-assembly-2.6.5-jar-with-dependencies.jar  -keepattributes *Annotation* -keep public class com.google.vending.licensing.ILicensingService -keep public class com.android.vending.licensing.ILicensingService