如何正确使用apktool工具

G:\XXHD\lyq\apktool>java -jar apktool.jar d G:\XXHD\lyq\apktool\AdvDemo.apk I: Using Apktool 2.0.0-RC4 on AdvDemo.apk I: Loading resource table... I: Decoding AndroidManifest.xml with resources... I: Loading resource table from file: C:\Users\Administrator\apktool\framework\1.apk W: Could not decode attr value, using undecoded value instead: ns=android, name=versionCode, value=0x00000001 I: Loading resource table from file: C:\Users\Administrator\apktool\framework\1.apk W: Could not decode attr value, using undecoded value instead: ns=android, name=versionName, value=0x00000014 I: Loading resource table from file: C:\Users\Administrator\apktool\framework\1.apk W: Could not decode attr value, using undecoded value instead: ns=android, name=versionCode, value=0x00000001 I: Loading resource table from file: C:\Users\Administrator\apktool\framework\1.apk W: Could not decode attr value, using undecoded value instead: ns=android, name=versionName, value=0x00000014 Exception in thread "main" java.lang.NullPointerException at java.io.Writer.write(Unknown Source) at brut.androlib.res.util.ExtMXSerializer.writeAttributeValue(ExtMXSerializer.java:38) at org.xmlpull.mxp1_serializer.MXSerializer.attribute(MXSerializer.java:673) at org.xmlpull.v1.wrapper.classic.XmlSerializerDelegate.attribute(XmlSerializerDelegate.java:106) at org.xmlpull.v1.wrapper.classic.StaticXmlSerializerWrapper.writeStartTag(StaticXmlSerializerWrapper.java:267) at org.xmlpull.v1.wrapper.classic.StaticXmlSerializerWrapper.event(StaticXmlSerializerWrapper.java:211) at brut.androlib.res.decoder.XmlPullStreamDecoder$1.event(XmlPullStreamDecoder.java:83) at brut.androlib.res.decoder.XmlPullStreamDecoder.decode(XmlPullStreamDecoder.java:141) at brut.androlib.res.decoder.XmlPullStreamDecoder.decodeManifest(XmlPullStreamDecoder.java:153) at brut.androlib.res.decoder.ResFileDecoder.decodeManifest(ResFileDecoder.java:134) at brut.androlib.res.AndrolibResources.decodeManifestWithResources(AndrolibResources.java:294) at brut.androlib.Androlib.decodeManifestWithResources(Androlib.java:138) at brut.androlib.ApkDecoder.decode(ApkDecoder.java:102) at brut.apktool.Main.cmdDecode(Main.java:165) at brut.apktool.Main.main(Main.java:81)