5分钟搞定android混淆

前言

混淆是上线前挺重要的一个环节。android使用的ProGuard，可以起到压缩，混淆，预检，优化的作用。但是很多童鞋还没有掌握正确的写混淆文件的姿势。我希望搞个模板化的东西，让大家轻松搞定混淆。那么，开始写一个项目的混淆吧。。。我是不是很直接。。。。

五步搞定

1

打开项目中的proguard-rules.pro，将下面的代码复制进去。我的思路是将混淆分为2个主要部分

• 定制化区域。这里边的内容是我们主要需要补充的部分，大致分为4个小部分，我们接下来的步骤主要是补充这4个部分的东西。
• 基本不用动区域。顾名思义，基本不用动。这块的内容我已经写好了，除非有特殊的需求，基本不用改动。。。请叫我雷锋。。。。。

#-------------------------------------------定制化区域----------------------------------------------#---------------------------------1.实体类---------------------------------#-------------------------------------------------------------------------#---------------------------------2.第三方包-------------------------------#-------------------------------------------------------------------------#---------------------------------3.与js互相调用的类------------------------#-------------------------------------------------------------------------#---------------------------------4.反射相关的类和方法-----------------------#----------------------------------------------------------------------------#---------------------------------------------------------------------------------------------------#-------------------------------------------基本不用动区域--------------------------------------------#---------------------------------基本指令区-----------------------------------optimizationpasses 5-dontusemixedcaseclassnames-dontskipnonpubliclibraryclasses-dontskipnonpubliclibraryclassmembers-dontpreverify-verbose-printmapping proguardMapping.txt-optimizations !code/simplification/cast,!field/*,!class/merging/*-keepattributes *Annotation*,InnerClasses-keepattributes Signature-keepattributes SourceFile,LineNumberTable#----------------------------------------------------------------------------#---------------------------------默认保留区----------------------------------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.view.View-keep public class com.android.vending.licensing.ILicensingService-keep class android.support.** {*;}-keepclasseswithmembernames class * {    native <methods>;}-keepclassmembers class * extends android.app.Activity{    public void *(android.view.View);}-keepclassmembers enum * {    public static **[] values();    public static ** valueOf(java.lang.String);}-keep public class * extends android.view.View{    *** get*();    void set*(***);    public <init>(android.content.Context);    public <init>(android.content.Context, android.util.AttributeSet);    public <init>(android.content.Context, android.util.AttributeSet, int);}-keepclasseswithmembers class * {    public <init>(android.content.Context, android.util.AttributeSet);    public <init>(android.content.Context, android.util.AttributeSet, int);}-keep class * implements android.os.Parcelable {  public static final android.os.Parcelable$Creator *;}-keepclassmembers class * implements java.io.Serializable {    static final long serialVersionUID;    private static final java.io.ObjectStreamField[] serialPersistentFields;    private void writeObject(java.io.ObjectOutputStream);    private void readObject(java.io.ObjectInputStream);    java.lang.Object writeReplace();    java.lang.Object readResolve();}-keep class **.R$* { *;}-keepclassmembers class * {    void *(**On*Event);}#----------------------------------------------------------------------------#---------------------------------webview-------------------------------------keepclassmembers class fqcn.of.javascript.interface.for.Webview {   public *;}-keepclassmembers class * extends android.webkit.WebViewClient {    public void *(android.webkit.WebView, java.lang.String, android.graphics.Bitmap);    public boolean *(android.webkit.WebView, java.lang.String);}-keepclassmembers class * extends android.webkit.WebViewClient {    public void *(android.webkit.WebView, jav.lang.String);}#----------------------------------------------------------------------------#---------------------------------------------------------------------------------------------------

2

理解完战略级思想后，我们开始第一部分补充-实体类。实体类由于涉及到与服务端的交互，各种gson的交互如此等等，是要保留的。将你项目中实体类都拎出来，用以下语法进行保留。

-keep class 你的实体类所在的包.** { *; }

如我的项目下类User的完整路径为：com.demo.login.bean.User, 那我的混淆如下

#---------------------------------1.实体类----------------------------------keep class com.demo.login.bean.** { *; }#-------------------------------------------------------------------------

当然你的实体类肯定不止这一个，请用上边的方式一一添加，如果你的实体类都在一个包下，那你就幸福了。

3

第2部分是第三方包。打开你的build.gradle文件，查看你用了哪些第三方的包。

dependencies {    compile 'com.github.bumptech.glide:glide:3.7.0'    compile 'org.greenrobot:eventbus:3.0.0'}

我这里用了glide，eventbus。我去他们的官网把已经写好的混淆copy下来。

#---------------------------------2.第三方包-------------------------------#eventBus-keepattributes *Annotation*-keepclassmembers class ** {    @org.greenrobot.eventbus.Subscribe <methods>;}-keep enum org.greenrobot.eventbus.ThreadMode { *; }-keepclassmembers class * extends org.greenrobot.eventbus.util.ThrowableFailureEvent {    <init>(java.lang.Throwable);}#glide-keep public class * implements com.bumptech.glide.module.GlideModule-keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {  **[] $VALUES;  public *;}#-------------------------------------------------------------------------

一般官网都是有混淆的，没有的话就google，也没有的话自己按照上面的写法自己写，还不会的话。。。。。只能换个包。。。。。如果你是直接包含的jar包的话，你这样写

#---------------------------------2.第三方包-------------------------------#log4j-libraryjars log4j-1.2.17.jar-dontwarn org.apache.log4j.**-keep class  org.apache.log4j.** { *;}#-------------------------------------------------------------------------

大致意思就是不混淆，不报warn。如果gradle报错的话，可以考虑注释掉-libraryjars log4j-1.2.17.jar这句。

4

第三部分与js互调的类，工程中没有直接跳过。一般你可以这样写

-keep class 你的类所在的包.** { *; }

如果是内部类的话，你可以这样

-keepclasseswithmembers class 你的类所在的包.父类$子类 { <methods>; }

例如

-keepclasseswithmembers class com.demo.login.bean.ui.MainActivity$JSInterface {       <methods>; }

5

第四部分与反射有关的类，工程中没有直接跳过。类的话直接这样

-keep class 你的类所在的包.** { *; }

熟练后不用五分钟就能搞定。大家可以把自己写完混淆所用的时间写在评论里（0，0）

深入了解

先逐条介绍下基本指令区指令的含义

-optimizationpasses 5

代码混淆的压缩比例，值在0-7之间

-dontusemixedcaseclassnames

混淆后类名都为小写

-dontskipnonpubliclibraryclasses

指定不去忽略非公共的库的类

-dontskipnonpubliclibraryclassmembers

指定不去忽略非公共的库的类的成员

-dontpreverify

不做预校验的操作

-verbose-printmapping proguardMapping.txt

生成原类名和混淆后的类名的映射文件

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

指定混淆是采用的算法

-keepattributes *Annotation*,InnerClasses

不混淆Annotation

-keepattributes Signature

不混淆泛型

-keepattributes SourceFile,LineNumberTable

抛出异常时保留代码行号

基本指令区基本介绍完了，说下2条用的最多的指令

-keep class XXXX

保留类名不变，也就是类名不混淆，而类中的成员名不保证。当然也可以是继承XXX类的所有类名不混淆，具体代码不贴了，重在理解。

-keepclasseswithmembers class XXXX

保留类名和成员名。当然也可以是类中特定方法，代码不贴了，理由同上。

附：完整的混淆

#-------------------------------------------定制化区域----------------------------------------------#---------------------------------1.实体类----------------------------------keep class com.demo.login.bean.** { *; }-keep class com.demo.main.bean.** { *; }#-------------------------------------------------------------------------#---------------------------------2.第三方包-------------------------------#eventBus-keepattributes *Annotation*-keepclassmembers class ** {    @org.greenrobot.eventbus.Subscribe <methods>;}-keep enum org.greenrobot.eventbus.ThreadMode { *; }-keepclassmembers class * extends org.greenrobot.eventbus.util.ThrowableFailureEvent {    <init>(java.lang.Throwable);}#glide-keep public class * implements com.bumptech.glide.module.GlideModule-keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {  **[] $VALUES;  public *;}#log4j-libraryjars log4j-1.2.17.jar-dontwarn org.apache.log4j.**-keep class  org.apache.log4j.** { *;}#-------------------------------------------------------------------------#---------------------------------3.与js互相调用的类-------------------------keepclasseswithmembers class com.demo.login.bean.ui.MainActivity$JSInterface {       <methods>; }#-------------------------------------------------------------------------#---------------------------------4.反射相关的类和方法-----------------------#TODO 我的工程里没有。。。#----------------------------------------------------------------------------#---------------------------------------------------------------------------------------------------#-------------------------------------------基本不用动区域--------------------------------------------#---------------------------------基本指令区-----------------------------------optimizationpasses 5-dontusemixedcaseclassnames-dontskipnonpubliclibraryclasses-dontskipnonpubliclibraryclassmembers-dontpreverify-verbose-printmapping proguardMapping.txt-optimizations !code/simplification/cast,!field/*,!class/merging/*-keepattributes *Annotation*,InnerClasses-keepattributes Signature-keepattributes SourceFile,LineNumberTable#----------------------------------------------------------------------------#---------------------------------默认保留区----------------------------------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.view.View-keep public class com.android.vending.licensing.ILicensingService-keep class android.support.** {*;}-keepclasseswithmembernames class * {    native <methods>;}-keepclassmembers class * extends android.app.Activity{    public void *(android.view.View);}-keepclassmembers enum * {    public static **[] values();    public static ** valueOf(java.lang.String);}-keep public class * extends android.view.View{    *** get*();    void set*(***);    public <init>(android.content.Context);    public <init>(android.content.Context, android.util.AttributeSet);    public <init>(android.content.Context, android.util.AttributeSet, int);}-keepclasseswithmembers class * {    public <init>(android.content.Context, android.util.AttributeSet);    public <init>(android.content.Context, android.util.AttributeSet, int);}-keep class * implements android.os.Parcelable {  public static final android.os.Parcelable$Creator *;}-keepclassmembers class * implements java.io.Serializable {    static final long serialVersionUID;    private static final java.io.ObjectStreamField[] serialPersistentFields;    private void writeObject(java.io.ObjectOutputStream);    private void readObject(java.io.ObjectInputStream);    java.lang.Object writeReplace();    java.lang.Object readResolve();}-keep class **.R$* { *;}-keepclassmembers class * {    void *(**On*Event);}#----------------------------------------------------------------------------#---------------------------------webview-------------------------------------keepclassmembers class fqcn.of.javascript.interface.for.Webview {   public *;}-keepclassmembers class * extends android.webkit.WebViewClient {    public void *(android.webkit.WebView, java.lang.String, android.graphics.Bitmap);    public boolean *(android.webkit.WebView, java.lang.String);}-keepclassmembers class * extends android.webkit.WebViewClient {    public void *(android.webkit.WebView, jav.lang.String);}#----------------------------------------------------------------------------#---------------------------------------------------------------------------------------------------

后言

将build.gradle中minifyEnabled设置为true打个包试试吧

   release {       minifyEnabled true       proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'   }

其他需求可以留言讨论。如果觉得有用请帮忙戳喜欢。。

更新日志

1.模板中的规则有部分与默认的proguard-android.txt文件中的重复了，可以精简一下

#-------------------------------------------定制化区域----------------------------------------------#---------------------------------1.实体类---------------------------------#-------------------------------------------------------------------------#---------------------------------2.第三方包-------------------------------#-------------------------------------------------------------------------#---------------------------------3.与js互相调用的类------------------------#-------------------------------------------------------------------------#---------------------------------4.反射相关的类和方法-----------------------#----------------------------------------------------------------------------#---------------------------------------------------------------------------------------------------#-------------------------------------------基本不用动区域--------------------------------------------#---------------------------------基本指令区-----------------------------------optimizationpasses 5-dontskipnonpubliclibraryclassmembers-printmapping proguardMapping.txt-optimizations !code/simplification/cast,!field/*,!class/merging/*-keepattributes *Annotation*,InnerClasses-keepattributes Signature-keepattributes SourceFile,LineNumberTable#----------------------------------------------------------------------------#---------------------------------默认保留区----------------------------------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.view.View-keep public class com.android.vending.licensing.ILicensingService-keep class android.support.** {*;}-keep public class * extends android.view.View{    *** get*();    void set*(***);    public <init>(android.content.Context);    public <init>(android.content.Context, android.util.AttributeSet);    public <init>(android.content.Context, android.util.AttributeSet, int);}-keepclasseswithmembers class * {    public <init>(android.content.Context, android.util.AttributeSet);    public <init>(android.content.Context, android.util.AttributeSet, int);}-keepclassmembers class * implements java.io.Serializable {    static final long serialVersionUID;    private static final java.io.ObjectStreamField[] serialPersistentFields;    private void writeObject(java.io.ObjectOutputStream);    private void readObject(java.io.ObjectInputStream);    java.lang.Object writeReplace();    java.lang.Object readResolve();}-keep class **.R$* { *;}-keepclassmembers class * {    void *(**On*Event);}#----------------------------------------------------------------------------#---------------------------------webview-------------------------------------keepclassmembers class fqcn.of.javascript.interface.for.Webview {   public *;}-keepclassmembers class * extends android.webkit.WebViewClient {    public void *(android.webkit.WebView, java.lang.String, android.graphics.Bitmap);    public boolean *(android.webkit.WebView, java.lang.String);}-keepclassmembers class * extends android.webkit.WebViewClient {    public void *(android.webkit.WebView, jav.lang.String);}#----------------------------------------------------------------------------#---------------------------------------------------------------------------------------------------

感谢

包老师的《App研发录》

文／wolearn（简书作者）
原文链接：http://www.jianshu.com/p/f3455ecaa56e
著作权归作者所有，转载请联系作者获得授权，并标注“简书作者”。