Android 混淆代码总结

原文：http://blog.csdn.net/lovexjyong/article/details/24652085

为了防止自己的劳动成果被别人窃取，混淆代码能有效防止被反编译，下面来总结以下混淆代码的步骤：

1. 大家也许都注意到新建一个工程会看到项目下边有这样proguard-project.txt一个文件，这个对混淆代码很重要，如果你不小心删掉了，没关系，从其他地方拷贝一个过来

2. 最重要的就是在proguard-project.txt添加混淆的申明了：

a. 把所有你的jar包都申明进来，例如：

-libraryjars libs/apns_1.0.6.jar

-libraryjars libs/armeabi/libBaiduMapSDK_v2_3_1.so

-libraryjars libs/armeabi/liblocSDK4.so

-libraryjars libs/baidumapapi_v2_3_1.jar

-libraryjars libs/core.jar

-libraryjars libs/gesture-imageview.jar

-libraryjars libs/gson-2.0.jar

-libraryjars libs/infogracesound.jar

-libraryjars libs/locSDK_4.0.jar

-libraryjars libs/ormlite-android-4.48.jar

-libraryjars libs/ormlite-core-4.48.jar

-libraryjars libs/universal-image-loader-1.9.0.jar

b. 将你不需要混淆的部分申明进来，因为有些类经过混淆会导致程序编译不通过，如下：

-keep public class * extends android.app.Fragment

-keep public class * extends android.app.Activity

-keep public class * extends android.app.Application

-keep public class * extends android.app.Service

-keep public class * extends android.content.BroadcastReceiver

-keep public class * extends android.content.ContentProvider

-keep public class * extends android.app.backup.BackupAgentHelper

-keep public class * extends android.preference.Preference

-keep public class * extends android.support.v4.**

-keep public class com.android.vending.licensing.ILicensingService

--以上都是API里边的类，最好都要避免混淆

有些很特殊的，例如百度地图，你需要添加以下申明：

-keep class com.baidu.** { *; }

-keep class vi.com.gdi.bgl.android.**{*;}

根据我的经验，一般model最好避免混淆（model无关紧要，不混淆也没多大关系）如：

-keep class com.bank.pingan.model.** { *; }

下面在贴上关于Umeng分享统计的避免混淆的申明

-dontwarn android.support.v4.**

-dontwarn org.apache.commons.net.**

-dontwarn com.tencent.**

-keepclasseswithmembernames class * {

native <methods>;

}

-keepclasseswithmembernames class * {

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

}

-keepclasseswithmembernames class * {

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

}

-keepclassmembers enum * {

public static **[] values();

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

}

-keep class * implements android.os.Parcelable {

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

}

-keepclasseswithmembers class * {

public <init>(android.content.Context);

}

-dontshrink

-dontoptimize

-dontwarn com.google.android.maps.**

-dontwarn android.webkit.WebView

-dontwarn com.umeng.**

-dontwarn com.tencent.weibo.sdk.**

-dontwarn com.facebook.**

-keep enum com.facebook.**

-keepattributes Exceptions,InnerClasses,Signature

-keepattributes *Annotation*

-keepattributes SourceFile,LineNumberTable

-keep public interface com.facebook.**

-keep public interface com.tencent.**

-keep public interface com.umeng.socialize.**

-keep public interface com.umeng.socialize.sensor.**

-keep public interface com.umeng.scrshot.**

-keep public class com.umeng.socialize.* {*;}

-keep public class javax.**

-keep public class android.webkit.**

-keep class com.facebook.**

-keep class com.umeng.scrshot.**

-keep public class com.tencent.** {*;}

-keep class com.umeng.socialize.sensor.**

-keep class com.tencent.mm.sdk.openapi.WXMediaMessage {*;}

-keep class com.tencent.mm.sdk.openapi.** implements com.tencent.mm.sdk.openapi.WXMediaMessage$IMediaObject {*;}

-keep class im.yixin.sdk.api.YXMessage {*;}

-keep class im.yixin.sdk.api.** implements im.yixin.sdk.api.YXMessage$YXMessageData{*;}

-keep public class [your_pkg].R$*{

public static final int *;

}

3.以上工作完成，混淆工作就完成了一大半了，最后需要做的就是在project.properties文件中加上你的混淆文件申明了，如下：

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

4. OK， 最后一步，打签名包测试，如果有问题，仔细看下Log也许有得类不能混淆，那么你得加入到proguard-project.txt文件中

-------以上就是混淆代码的全过程了

最后贴上proguard-project.txt的全部代码：

[java] view
plaincopy





# 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 *;

#}

-optimizationpasses 5

-dontusemixedcaseclassnames

-dontskipnonpubliclibraryclasses

-dontpreverify

-verbose

-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*

-keepattributes *Annotation*

-keepattributes Signature

-libraryjars libs/apns_1.0.6.jar

-libraryjars libs/armeabi/libBaiduMapSDK_v2_3_1.so

-libraryjars libs/armeabi/liblocSDK4.so

-libraryjars libs/baidumapapi_v2_3_1.jar

-libraryjars libs/core.jar

-libraryjars libs/gesture-imageview.jar

-libraryjars libs/gson-2.0.jar

-libraryjars libs/infogracesound.jar

-libraryjars libs/locSDK_4.0.jar

-libraryjars libs/ormlite-android-4.48.jar

-libraryjars libs/ormlite-core-4.48.jar

-libraryjars libs/universal-image-loader-1.9.0.jar

-keep class com.baidu.** { *; }

-keep class vi.com.gdi.bgl.android.**{*;}

-keep public class * extends android.app.Fragment

-keep public class * extends android.app.Activity

-keep public class * extends android.app.Application

-keep public class * extends android.app.Service

-keep public class * extends android.content.BroadcastReceiver

-keep public class * extends android.content.ContentProvider

-keep public class * extends android.app.backup.BackupAgentHelper

-keep public class * extends android.preference.Preference

-keep public class * extends android.support.v4.**

-keep public class com.android.vending.licensing.ILicensingService

-keep class com.google.gson.stream.** { *; }

-keep class com.google.gson.examples.android.model.** { *; }

-keep class com.uuhelper.Application.** { *; }

-keep class net.sourceforge.zbar.** { *; }

-keep class com.google.android.gms.** { *; }

-keep class com.bank.pingan.model.** { *; }

-keep public class * extends com.j256.ormlite.android.apptools.OrmLiteSqliteOpenHelper

-keep public class * extends com.j256.ormlite.android.apptools.OpenHelperManager

-keep class com.android.vending.licensing.ILicensingService

-keep class android.support.v4.** { *; }

-keep class org.apache.commons.net.** { *; }

-keep class com.tencent.** { *; }

-keep class com.umeng.** { *; }

-keep class com.umeng.analytics.** { *; }

-keep class com.umeng.common.** { *; }

-keep class com.umeng.newxp.** { *; }

-keep class com.j256.ormlite.** { *; }

-keep class com.j256.ormlite.android.** { *; }

-keep class com.j256.ormlite.field.** { *; }

-keep class com.j256.ormlite.stmt.** { *; }

-dontwarn android.support.v4.**

-dontwarn org.apache.commons.net.**

-dontwarn com.tencent.**

-keepclasseswithmembernames class * {

native <methods>;

}

-keepclasseswithmembernames class * {

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

}

-keepclasseswithmembernames class * {

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

}

-keepclassmembers enum * {

public static **[] values();

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

}

-keep class * implements android.os.Parcelable {

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

}

-keepclasseswithmembers class * {

public <init>(android.content.Context);

}

-dontshrink

-dontoptimize

-dontwarn com.google.android.maps.**

-dontwarn android.webkit.WebView

-dontwarn com.umeng.**

-dontwarn com.tencent.weibo.sdk.**

-dontwarn com.facebook.**

-keep enum com.facebook.**

-keepattributes Exceptions,InnerClasses,Signature

-keepattributes *Annotation*

-keepattributes SourceFile,LineNumberTable

-keep public interface com.facebook.**

-keep public interface com.tencent.**

-keep public interface com.umeng.socialize.**

-keep public interface com.umeng.socialize.sensor.**

-keep public interface com.umeng.scrshot.**

-keep public class com.umeng.socialize.* {*;}

-keep public class javax.**

-keep public class android.webkit.**

-keep class com.facebook.**

-keep class com.umeng.scrshot.**

-keep public class com.tencent.** {*;}

-keep class com.umeng.socialize.sensor.**

-keep class com.tencent.mm.sdk.openapi.WXMediaMessage {*;}

-keep class com.tencent.mm.sdk.openapi.** implements com.tencent.mm.sdk.openapi.WXMediaMessage$IMediaObject {*;}

-keep class im.yixin.sdk.api.YXMessage {*;}

-keep class im.yixin.sdk.api.** implements im.yixin.sdk.api.YXMessage$YXMessageData{*;}

-keep public class [your_pkg].R$*{

public static final int *;

}

顺便提及提及依据，如果使用了umeng友盟的更新 ，更新版本的时候程序会崩，提示
Unable to start activity ComponentInfo{com.yourpacket/com.umeng.update.UpdateDialogActivity}: java.lang.IllegalArgumentException: ResClass is not initialized

这个根据友盟官网的提示是因为UpdateDialogActivity这个类在本地编译的时候有调用，但是当混淆编码的时候将不会编码R文件，所以就会找不到，这个的处理方式是
在工程的proguard.cfg中添加将R文件一起混淆编码。如下:
-keep public class com.colgar.dian.R$*{

public static final int *;

}