使用详解

[xulong20130712]

您能帮忙给个例子看下吗，或者能加下您的qq咨询下吗？为什么我用的时候一直有问题啊：
java -jar baffle.jar test.apk target.apk
Exception in thread "main" java.lang.RuntimeException: java.lang.NullPointerException
at com.guye.baffle.obfuscate.ApkBuilder.reBuildapk(ApkBuilder.java:89)
at com.guye.baffle.obfuscate.Obfuscater.obfuscate(Obfuscater.java:186)
at com.guye.baffle.obfuscate.Main.main(Main.java:142)
Caused by: java.lang.NullPointerException
at com.guye.baffle.obfuscate.ApkBuilder.reBuildapk(ApkBuilder.java:67)
... 2 more
求帮忙