Android 混淆代码总结

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：

# 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 *;

-dontwarn com.xx.bbb.**
-keep class com.xx.bbb.** { *;}

参数来保持第三方库中的类而不乱，-dontwarn和-keep 结合使用，意思是保持com.xx.bbb.这个包里面的所有类和所有方法而不混淆，接着还叫ProGuard不要警告找不到com.xx.bbb.这个包里面的类的相关引用。

2、加入新浪微博sdk遇到的问题

Proguard returned with error code 1. See console

Note: there were 1 duplicate class definitions.

Warning: library class android.webkit.WebViewClient depends on program class android.net.http.SslError

Warning: there were 1 instances of library classes depending on program classes.

You must avoid such dependencies, since the program classes will

be processed, while the library classes will remain unchanged.

java.io.IOException: Please correct the above warnings first.

at proguard.Initializer.execute(Initializer.java:321)

at proguard.ProGuard.initialize(ProGuard.java:211)

at proguard.ProGuard.execute(ProGuard.java:86)

at proguard.ProGuard.main(ProGuard.java:492)

根据异常相信同行们已经看出来了，还要单独keep 一下SslError这个，因为这个东西没有在 com.weibo.sdk.android这个包里面，于是再加上：

-dontwarn android.net.http.**

-keep class android.net.http.* { ;}

3、对于引入了第三方Library，以actionbarsherlock为例

#actionbarsherlock start
-keep class android.support.v4.app.** { *; }
-keep interface android.support.v4.app.** { *; }
-keep class com.actionbarsherlock.** { *; }
-keep interface com.actionbarsherlock.** { *; }
#actionbarsherlock start

4、Conversion to Dalvik format failed with error

对于这个问题注释掉了下面的代码启用了上面的代码，上面的代码是防止方法调用的栈太多导致的溢出，下面的意思猜测可能是只允许5层嵌套的方法，明天再确定一下

-dontoptimize
#-optimizationpasses 5