android防止反编译

作为Android应用开发者，不得不面对一个尴尬的局面，就是自己辛辛苦苦开发的应用可以被别人很轻易的就反编译出来。

Google似乎也发现了这个问题，从SDK2.3开始我们可以看到在android-sdk-windows\tools\下面多了一个proguard文件夹

proguard是一个java代码混淆的工具，通过proguard，别人即使反编译你的apk包，也只会看到一些让人很难看懂的代码，从而达到保护代码的作用。

在eclipse如何设置反编译就是在eclipse自动生成的project.properties文件中加上一句“proguard.config=proguard.cfg”就可以了

# This file is automatically generated by Android Tools.   
# Do not modify this file -- YOUR CHANGES WILL BE ERASED!   
#   
# This file must be checked in Version Control Systems.   
#   
# To customize properties used by the Ant build system use,   
# "build.properties", and override values to adapt the script to your   
# project structure.   
   
# Project target.   
target=android-9   
proguard.config=proguard.cfg  

配置proguard.cfg

我的做法是在项目根目录新建一个txt档改名为proguard.cfg 将下面内容拷入该文件

其中-libraryjars 是配置混淆器不混淆的第三方jar包。

-optimizationpasses 5
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontpreverify
-verbose
-ignorewarnings
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
-libraryjars libs/json-lib-1.1-jdk15.jar
-libraryjars libs/xx_android_sdk.jar

-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 com.android.vending.licensing.ILicensingService

-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 *;
}