Android混淆打包

一、理论知识  

ProGuard是一款免费的Java类文件压缩器、优化器和混淆器。它能发现并删除无用类、字段（field）、方法和属性值（attribute）。它也能优化字节码并删除无用的指令。最后，它使用简单无意义的名字来重命名你的类名、字段名和方法名。经过以上操作的jar文件会变得更小，并很难进行逆向工程。

二、基本使用

  在Android应用程序也可以使用ProGuard来进行混洗打包，大大的优化Apk包的大小。但是注意ProGuard对文件路径的名名很有讲究，不支持括号，也不支持空格。在混淆过后，可以在工程目录的proguard中的mapping.txt看到混淆后的类名，方法名，变量名和混淆前的类名，方法名，变量名。

   在使用Eclipse或Ant打包应用程序时，都是使用Android工程目录的project.properties文件来指定配置。关于Android中如何使用ant打包请参考《Android中使用Ant编译打包》

在使用Eclipse新建一个工程，都会在工程目录下生产配置project.properties和proguard-project.tx。

文件如下所示：

例1

# 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

 

# Project target.

target=android-10

project.properties用于配置Android工程的一些属性，#号的话表示当前行是注释，这里的proguard.config就用于指定ProGuard的混淆配置文件，并对使用release方式打包应用程序时开启代码混淆功能。对于是否是使用release方式打包，和AndroidManifest.xml中application的android:debuggable属性有很多关系。如果该值为android:debuggable="true"，那么最终就是debug方式打包。最明智的方式就是在AndroidManifest.xml并不显示的指定它，而是是打包工具在打包时来决定它最终的值。对于ant就是ant release或ant debug。而对于直接在Eclipse中使用run 或debgu来打包的话就是debug,使用export的话就是release.

proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt

这里的话指定了混淆的基本配置文件proguard-android.txt，和混淆的个性化配置文件proguard-project.txt。这里proguard-project.txt文件用于对前面的基本的混淆配置文件proguard-android.txt的配置进行override和添加。

混淆的基本配置文件proguard-android.txt如下：

文件1

# This is a configuration file for ProGuard. # http://proguard.sourceforge.net/index.html#manual/usage.html -dontusemixedcaseclassnames -dontskipnonpubliclibraryclasses -verbose # 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 -dontpreverify # 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. -keepattributes *Annotation* -keep public class com.google.vending.licensing.ILicensingService -keep public class com.android.vending.licensing.ILicensingService # For native methods, see http://proguard.sourceforge.net/manual/examples.html#native -keepclasseswithmembernames class * { native <methods>; } # keep setters in Views so that animations can still work. # see http://proguard.sourceforge.net/manual/examples.html#beans -keepclassmembers public class * extends android.view.View { void set*(***); *** get*(); } # We want to keep methods in Activity that could be used in the XML attribute onClick -keepclassmembers class * extends android.app.Activity { public void *(android.view.View); } # For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations -keepclassmembers enum * { public static **[] values(); public static ** valueOf(java.lang.String); } -keep class * implements android.os.Parcelable { public static final android.os.Parcelable$Creator *; } -keepclassmembers class **.R$* { public static <fields>; } # The support library contains references to newer platform versions. # Don't warn about those in case this app is linking against an older # platform version. We know about them, and they are safe. -dontwarn android.support.**

以下则个是我们项目混淆的个性化配置文件proguard-project.txt

# To enable ProGuard in your project, edit project.properties
# to define the proguard.config property as described in that file.
#
# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in ${sdk.dir}/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the ProGuard
# include property in project.properties.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}

-renamesourcefileattribute SourceFile
-keepattributes SourceFile,LineNumberTable
-dontwarn android.**
-dontwarn edu.edut.lsf.payment.link.**
-libraryjars ..\Download_Install\lib\classes.jar

-keep class org.jboss.netty.util.internal.AtomicFieldUpdaterUtil
-keep class org.jboss.netty.util.internal.AtomicFieldUpdaterUtil$Node
-keep class org.jboss.netty.util.internal.LinkedTransferQueue$Node
-keep class edu.edut.robin.activities.LeWebJsActivity$AppStoreInterface
-keepclasseswithmembers class * {
public static void main(java.lang.String[]);
}
-keepclasseswithmembers class org.jboss.netty.util.internal.AtomicFieldUpdaterUtil$Node {
*;
}

-keepclasseswithmembers class edu.edut.robin.activities.LeWebActionActivity$AppstoreWebInterface {
*;
}
-keepclasseswithmembers class edu.edut.robin.utils.SilentInstallAssistant$* {
*;
}
-keepclasseswithmembers class edu.edut.robin.silentinstaller.utils.SilentInstallAssistant$* {
*;
}
-keepclasseswithmembers class edu.edut.robin.utils.Pm$* {
*;
}
-keepclasseswithmembers class org.jboss.netty.util.internal.LinkedTransferQueue {
volatile transient org.jboss.netty.util.internal.LinkedTransferQueue$Node head;
volatile transient org.jboss.netty.util.internal.LinkedTransferQueue$Node tail;
volatile transient int sweepVotes;

}
-keepclasseswithmembers class org.jboss.netty.util.internal.LinkedTransferQueue$Node {
*;
}
-keepclasseswithmembers class edu.edut.robin.activities.LeWebJsActivity$AppStoreInterface {
*;
}
-keepclasseswithmembers class * extends edu.edut.lsf.payment.WebSubmitInterface {
*;
}
-keepclasseswithmembers class edu.edut.lsf.payment.WebSubmitInterface {
*;
}
-keep public class com.unionpay.** {*; }
-keep public class edu.edut.lsf.** {*; }

注：由于牵扯到保密的问题，一些关于项目的东西换成了edu.edut或edu.edut.robin

三、混淆配置详解

另外以下是关于混淆配置文件的一些说明：

-renamesourcefileattribute SourceFile

-keepattributes SourceFile,LineNumberTable 保留原代码的行号信息

-injars  androidtest.jar【jar包所在地址】 

-outjars  out【输出地址】

-libraryjars    'D:\android-sdk-windows\platforms\android-9\android.jar' 【引用的库的jar，用于解析injars所指定的jar类】

 

-optimizationpasses 5

-dontusemixedcaseclassnames 【混淆时不会产生形形色色的类名 】puzzle

-dontskipnonpubliclibraryclasses 【指定不去忽略非公共的库类。 】 puzzle

-dontpreverify 【不预校验】

-verbose

-optimizations !code/simplification/arithmetic,!field/*,!class/merging/* 【优化】puzzle

-keep public class * extends android.app.Activity　　【不进行混淆类名的类，保持其原类名和包名】

 

-keep public abstract interface com.asqw.android.Listener{

public protected <methods>;  【所有public protected的方法名不进行混淆】

}

-keep public class com.asqw.android{

public void Start(java.lang.String); 【对该方法不进行混淆】

}

-keepclasseswithmembernames class * { 【对所有类的native方法名不进行混淆】

native <methods>;

}

-keepclasseswithmembers class * { 【对所有类的指定方法的方法名不进行混淆】

public <init>(android.content.Context, android.util.AttributeSet);

}

-keepclassmembers class * extends android.app.Activity {【对所有类的指定方法的方法名不进行混淆】

public void *(android.view.View);

}

-keepclassmembers enum * {【对枚举类型enum的所有类的以下指定方法的方法名不进行混淆】

public static **[] values();

public static ** valueOf(java.lang.String);

}

-keep class * implements android.os.Parcelable {【对实现了Parcelable接口的所有类的类名不进行混淆，对其成员变量为Parcelable$Creator类型的成员变量的变量名不进行混淆】

public static final android.os.Parcelable$Creator *;

}

-keepclasseswithmembers class org.jboss.netty.util.internal.LinkedTransferQueue {【对指定类的指定变量的变量名不进行混淆】
volatile transient org.jboss.netty.util.internal.LinkedTransferQueue$Node head;
volatile transient org.jboss.netty.util.internal.LinkedTransferQueue$Node tail;
volatile transient int sweepVotes;

}

-keep public class com.unionpay.** {*; }【对com.unionpay包下所有的类都不进行混淆，即不混淆类名，也不混淆方法名和变量名】

结束！