android 混淆 去除第三方jar

 

 

 

        编译与反编译，一对相辅相成的矛盾。反编译有时候会和不光彩的事情联系在一起，以致于编译者常常费劲心思，加大反编译的难度，比如采用混淆代码等方式。ProGuard正是这么一个工具：

The ProGuard tool shrinks, optimizes, and obfuscates your code by removing unused code and renaming classes, fields, and methods with semantically obscure name.

Android SDK整合了ProGuard，并在文档中用了一个章节来描述如何使用它。依照文档来实施，多半没有问题，不过在使用中有时候遇到了一些问题：（就是提示一些包找不到）

 

依照以往的惯例，发生warning，可忽视之，只有看到error，才会小紧张一把。不过这次的warning导致了BUILD FAILED，这回问题大了。

按照提示，在proguard.cfg里，加入-dontskipnonpubliclibraryclasses，再试，还是有问题。

那就到官网找找答案吧，Manual -> Troubleshooting -> “Warning: can’t find referenced class”，找到这么一句话：try your luck with the -ignorewarnings option, or even the -dontwarn option.再对比日志信息，发现：

[proguard] Warning: net.poemcode.Digest: can’t find referenced class org.apache.CastleProvider

打开proguard.cfg，加入-dontwarn net.poemcode.**，在打包一次。'

 

附件是default.properties和proguard.cfg 文件

 

 

评论

1 楼 su1216 2011-06-14  

[2011-06-14 08:11:52 - Thief] Warning: org.apache.harmony.awt.datatransfer.NativeClipboard: can't find referenced class java.awt.datatransfer.Clipboard
[2011-06-14 08:11:52 - Thief] Warning: there were 247 unresolved references to classes or interfaces.
[2011-06-14 08:11:52 - Thief]          You may need to specify additional library jars (using '-libraryjars'),
[2011-06-14 08:11:52 - Thief]          or perhaps the '-dontskipnonpubliclibraryclasses' option.
[2011-06-14 08:11:52 - Thief] java.io.IOException: Please correct the above warnings first.
[2011-06-14 08:11:52 - Thief] 	at proguard.Initializer.execute(Initializer.java:308)
[2011-06-14 08:11:52 - Thief] 	at proguard.ProGuard.initialize(ProGuard.java:210)
[2011-06-14 08:11:52 - Thief] 	at proguard.ProGuard.execute(ProGuard.java:85)
[2011-06-14 08:11:52 - Thief] 	at proguard.ProGuard.main(ProGuard.java:499)

-dontskipnonpubliclibraryclasses
-dontwarn net.poemcode.**
这两个都加了，依然报错。。。
楼主知道什么原因不