Android 混淆代碼詳解及實例

為了防止自己的勞動成果被別人竊取，混淆代碼能有效防止被反編譯，下面來總結以下混淆代碼的步驟：

1. 大家也許都注意到新建一個工程會看到項目下邊有這樣proguard-project.txt一個文件，這個對混淆代碼很重要，如果你不小心刪掉了，沒關系，從其他地方拷貝一個過來

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包都申明進來，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. 將你不需要混淆的部分申明進來，因為有些類經過混淆會導致程序編譯不通過，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裡邊的類，最好都要避免混淆

有些很特殊的，例如百度地圖，你需要添加以下申明：

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

根據我的經驗，一般model最好避免混淆（model無關緊要，不混淆也沒多大關系）如：

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

下面在貼上關於Umeng分享統計的避免混淆的申明

-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，最後需要做的就是在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， 最後一步，打簽名包測試，如果有問題，仔細看下Log也許有得類不能混淆，那麼你得加入到proguard-project.txt文件中

-------以上就是混淆代碼的全過程了 

最後貼上proguard-project.txt的全部代碼：

# 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 *; 
} 

2015-05-25更新 

1. 依賴工程的jar 申明： 

以下是郵件發送的實例 

-libraryjars ../KlowerBase/libs/mail-activation.jar 
-libraryjars ../KlowerBase/libs/mail-additionnal.jar 
-libraryjars ../KlowerBase/libs/mail.jar 

2. 解決郵件發送時報的以異常 

 -keep class javax.mail.**{*;} 
 -keep class com.sun.mail.**{*;} 
-keep class javax.activation.**{*;} 
-keep class org.apache.harmony.**{*;} 
-keep class java.security.**{*;} 

#解決：can't find referenced class java.beans.Beans 
-dontwarn org.apache.commons.collections.BeanMap 
-dontwarn java.beans.** 
#解決：can't find referenced class javax.security.sasl.Sasl 
-dontwarn com.sun.mail.imap.protocol.** 

通過本文希望能幫助 Android開發應用使用混淆代碼的朋友，謝謝大家對本站的支持！