Android-SDK默认混淆配置ProGuard

一.介绍

通常情况下编译后的字节码包含了大量调试信息(如源类名/行号等)混淆代码就能删除这些调试信息，并用无意义字符替换所有名字，增加反编译难度！ProGuard是一个混淆Java代码的开源项目，主要作用如下：    混淆Obfuscate 用无意义字符替换类名/字段名/属性名/方法名等    压缩Shrink 移除无用类/字段/属性/方法    优化Optimize 移除无用字节码指令    预检preverify 预检字节码,确保可执行

二.混淆配置

在Android studio/build.gradle中android {    ...    buildTypes {        release {            //开启混淆/压缩            minifyEnabled true            //proguard-android.txt是Android SDK默认混淆配置文件，            //proguard-rules.pro是我们自定义混淆配置文件            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }}   

1.自定义混淆文件proguard-rules.pro

#基本指令-----------------------------------printmapping proguardMapping.txt #输出混淆前后代码映射关系-keepattributes Signature #保留泛型# -renamesourcefileattribute 重命名源码文件.java #崩溃抛出异常时,源码文件名自定义-keepattributes SourceFile, LineNumberTable #崩溃抛出异常时,保留源码文件名和源码行号#移除log代码#确保没有开启--dontoptimize选项#默认混淆文件不要用proguard-android.txt,应该用proguard-android-optimize.txt#assume no side effects假定无效, 标识无效代码-assumenosideeffects class android.util.Log {    public static int v(...);    public static int d(...);    public static int i(...);}

2.Android SDK默认混淆文件proguard-android.txt

AndroidSDK\tools\proguard\proguard-android.txt                         \proguard-android-optimize.txt                          其中proguard-android是不开启优化的配置文件    proguard-android-optimize.tx是开启优化的配置文件

#1.在proguard-android-optimize.txt中——————————————————————————————#开启优化-optimizations !code/simplification/arithmetic,!code/simplification/cast,!field/*,!class/merging/*-optimizationpasses 5-allowaccessmodification......剩下部分同proguard-android.txt

#2.在proguard-android.txt中———————————————————————————————————————#不开启优化, 会导致-assumenosideeffects无法去除log代码#如果要用-assumenosideeffects去除log代码,默认混淆文件应该选proguard-android-optimize.txt-dontoptimize -dontusemixedcaseclassnames-dontskipnonpubliclibraryclasses-verbose-dontpreverify-keepattributes *Annotation*-keep public class com.google.vending.licensing.ILicensingService-keep public class com.android.vending.licensing.ILicensingService-keepclasseswithmembernames class * {    native <methods>;}-keepclassmembers public class * extends android.view.View {   void set*(***);   *** get*();}-keepclassmembers class * extends android.app.Activity {   public void *(android.view.View);}-keepclassmembers enum * {    public static **[] values();    public static ** valueOf(java.lang.String);}-keepclassmembers class * implements android.os.Parcelable {  public static final android.os.Parcelable$Creator CREATOR;}-keepclassmembers class **.R$* {    public static <fields>;}-dontwarn android.support.**-keep class android.support.annotation.Keep-keep @android.support.annotation.Keep class * {*;}-keepclasseswithmembers class * {    @android.support.annotation.Keep <methods>;}-keepclasseswithmembers class * {    @android.support.annotation.Keep <fields>;}-keepclasseswithmembers class * {    @android.support.annotation.Keep <init>(...);}

简书: http://www.jianshu.com/p/c667764f1f3a
CSDN博客: http://blog.csdn.net/qq_32115439/article/details/72785344
GitHub博客：http://lioil.win/2017/05/27/Android_ProGuard.html
Coding博客：http://c.lioil.win/2017/02/27/Android_ProGuard.html