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情况1：
Proguard returned with error code 1. See console
Error: C:/Documents (系统找不到指定文件)
这个是因为有空格引起的，proguard进行发编译的时候是不允许有空格的。所以要注意工程所放位置是否有空格。
如果换了正确路径还不好用的话，直接删除proguard就好了
注意：SDK和程序路径最好不要有空格符
情况2：
Proguard returned with error code 1. See console
异常：
java.lang.ArrayIndexOutOfBoundsException
解决办法：将proguard.cfg中的"-dontpreverify"改成“-dontoptimize”
把项目中生成的proguard文件夹（此时文件夹是空的）删掉，然后再重新运行项目，就OK 了。
情况3：
Proguard returned with error code 1. See console
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find superclass or interface android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced class android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced class android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced class android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced class android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced class android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced class android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced class android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced class android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced class android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced class android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced class android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced class android.app.Fragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced method 'android.app.Activity getActivity()' in class com.amap.api.maps.MapFragment
[2014-01-20 09:37:39 - DOYI] Warning: com.amap.api.maps.MapFragment: can't find referenced method 'android.os.Bundle getArguments()' in class com.amap.api.maps.MapFragment
[2014-01-20 09:37:39 - DOYI] Warning: com.autonavi.aps.amapapi.Utils: can't find referenced class android.provider.Settings$Global
[2014-01-20 09:37:39 - DOYI] Warning: com.autonavi.aps.amapapi.Utils: can't find referenced class android.provider.Settings$Global
[2014-01-20 09:37:39 - DOYI] Warning: there were 15 unresolved references to classes or interfaces.
[2014-01-20 09:37:39 - DOYI] You may need to specify additional library jars (using '-libraryjars').
[2014-01-20 09:37:39 - DOYI] Warning: there were 2 unresolved references to program class members.
[2014-01-20 09:37:39 - DOYI] Your input classes appear to be inconsistent.
[2014-01-20 09:37:39 - DOYI] You may need to recompile them and try again.
[2014-01-20 09:37:39 - DOYI] Alternatively, you may have to specify the option
[2014-01-20 09:37:39 - DOYI] '-dontskipnonpubliclibraryclassmembers'.
[2014-01-20 09:37:39 - DOYI] java.io.IOException: Please correct the above warnings first.
[2014-01-20 09:37:39 - DOYI] at proguard.Initializer.execute(Initializer.java:321)
[2014-01-20 09:37:39 - DOYI] at proguard.ProGuard.initialize(ProGuard.java:211)
[2014-01-20 09:37:39 - DOYI] at proguard.ProGuard.execute(ProGuard.java:86)
[2014-01-20 09:37:39 - DOYI] at proguard.ProGuard.main(ProGuard.java:492)
抛出这样的异常的原因是第三方jar的引用路径不对，没有找到这个需要忽略混淆的jar包。
只需在你的proguard-project.txt中添加如下两行即可。
-ignorewarnings
-libraryjars libs/Android_Map_V2.0.4.jar
你可以根据你的项目提示，添加需要的jar。
其实Android 4.0要用ProGuard比2.3更简单：在Eclipse中打开工程目录下的project.properties文件，该文件中有以下两行：
To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
根据这段说明，只要将proguard.config前面的#去掉，就可以利用ProGuard来混淆代码了！当然，默认的设置是不带优化功能的，可以用以下设置来加上代码优化功能：
proguard.config=${sdk.dir}/tools/proguard/proguard-android-optimize.txt:proguard-project.txt
然后只要经过数字签名之类的编译后，代码就是混淆的了。
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