关于Android混淆

在实际开发中我们在发布App时为了防止有人对App进行反编译我们需要对APK进行混淆，当然混淆的作用不只是为了防止对APK的反编译，还可以让我们开发的APK体积减小和方法数超过65535。
首先我们需要在app包下的build.gradle中开启编译混淆。

release {
minifyEnabledfalse
    proguardFiles getDefaultProguardFile('proguard-android.txt'),'proguard-rules.pro'
    zipAlignEnabledtrue 
    shrinkResourcesfalse  // 移除无用的resource文件
}

然后需要对proguard-rules.pro文件下进行混淆操作把我们需要做的混淆操作进行处理。
本人直接先粘贴上自己项目中的混淆代码处理，下面的代码可能会让你少找很多混淆代码。另外对于一个刚开始混淆的人来说，最好的混淆方式就是一个个慢慢来，一个个添加，这样虽然说可能会耗费更多的时间，但是能保证我们在混淆时对于出错的地方有一个定位方便处理错误。

#-------------------------------------------基本不用动区域--------------------------------------------
#---------------------------------基本指令区----------------------------------
-optimizations !code/simplification/arithmetic,!code/simplification/cast,!field/*,!class/merging/*  #指定要启用和禁用的优化
-optimizationpasses 5
-dontskipnonpubliclibraryclassmembers  #指定不去忽略包可见的库类的成员。
-printmapping proguardMapping.txt
-optimizations !code/simplification/cast,!field/*,!class/merging/*
-keepattributes *Annotation*,InnerClasses
-keepattributes Signature
-keepattributes SourceFile,LineNumberTable
-ignorewarnings
-allowaccessmodification  #指定在预先处理中 类和类成员的访问性可能会扩大
-dontpreverify #指定不预先验证处理类文件

-dontusemixedcaseclassnames  #指定不产生混合的情况下的类名称而混淆
-dontskipnonpubliclibraryclasses
-verbose

-keepattributes *Annotation*  #保持注解
-keepattributes Signature
-keepattributes EnclosingMethod
-keep class * extends java.lang.annotation.Annotation { *; }
#----------------------------------------------------------------------------

#---------------------------------默认保留区---------------------------------
#继承activity,application,service,broadcastReceiver,contentprovider....不进行混淆
-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.support.multidex.MultiDexApplication
-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);
}
#这个主要是在layout 中写的onclick方法android:onclick="onClick"，不进行混淆
-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}

-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$* {
 *;
  public static <fields>;
}

-keepclassmembers class * {
    void *(*Event);
}

-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

#// natvie 方法不混淆
-keepclasseswithmembernames class * {
    native <methods>;
}

#保持 Parcelable 不被混淆
-keep class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator *;
}

-dontwarn android.support.v4.**
-keep class android.support.v4.** { *; }
-keep interface android.support.v4.app.** { *; }
-keep public class * extends android.support.v4.**
-keep public class * extends android.support.v4.app.Fragment
-keep public class * extends android.support.v4.app.FragmentActivity

#---------------------------------1.实体类---------------------------------


-keep class com.equipmentrental.bean.** { *; }


##################以下是第三方的混淆#############################


##  gson 解析  https://github.com/google/gson
-dontwarn com.google.gson.**
-keep class com.google.gson.** {*;}
#-keep class com.google.**{*;}
#-keep class sun.misc.Unsafe { *; }
-keep class com.google.gson.stream.** { *; }
-keep class com.google.gson.examples.android.model.** { *; }
-keep class com.google.** {
    <fields>;
    <methods>;
}
-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();
}

##  RecyclerView适配器  https://github.com/CymChad/BaseRecyclerViewAdapterHelper
##  com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.34
-keep class com.chad.library.adapter.** {
*;
}
-keep public class * extends com.chad.library.adapter.base.BaseQuickAdapter
-keep public class * extends com.chad.library.adapter.base.BaseViewHolder
-keepclassmembers  class **$** extends com.chad.library.adapter.base.BaseViewHolder {
     <init>(...);
}

##  左右滑动 未找到 https://github.com/anzaizai/EasySwipeMenuLayout
##  com.github.anzaizai:EasySwipeMenuLayout:1.1.2


##  rxjava
##  io.reactivex.rxjava2:rxjava:2.1.1
##  rxandroid
##  io.reactivex.rxjava2:rxandroid:2.0.1
-dontwarn rx.*
-dontwarn sun.misc.**
-keepclassmembers class rx.internal.util.unsafe.*ArrayQuene*Field*{
long producerIndex;
long consumerIndex;
}
-keepclassmembers class rx.internal.util.unsafe.BaseLinkedQueueProducerNodeRef {
rx.internal.util.atomic.LinkedQueueNode producerNode;
rx.internal.util.atomic.LinkedQueueNode consumerNode;
}
-keepclassmembers class rx.internal.util.unsafe.BaseLinkedQueueConsumerNodeRef {
rx.internal.util.atomic.LinkedQueueNode consumerNode;
}

##  converter-gson
##  com.squareup.retrofit2:converter-gson:2.3.0

##  retrofit
##  com.squareup.retrofit2:retrofit:2.3.0
#-keepclassmembernames,allowobfuscation interface * {
#    @retrofit2.http.* <methods>;
#}
#-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
-keep class retrofit2.** { *; }
-dontwarn retrofit2.**
-keepattributes Signature
-keepattributes Exceptions
-dontwarn okio.**
-dontwarn javax.annotation.**

##  retrofit2-rxjava2-adapter
##  com.jakewharton.retrofit:retrofit2-rxjava2-adapter:1.0.0

##  okhttp
##  com.squareup.okhttp3:okhttp:3.8.1
-keep class com.squareup.okhttp.{*;}
-dontwarn com.squareup.okhttp.**
-dontwarn com.squareup.okhttp3.**
-keep class com.squareup.okhttp3.** { *;}
-dontwarn okio.**

##  logging-interceptor
##  com.squareup.okhttp3:logging-interceptor:3.4.1

##  下拉刷新 上拉加载更多 并不需要混淆
##  com.scwang.smartrefresh:SmartRefreshLayout:1.1.0-alpha-5

##  状态栏
##  com.gyf.barlibrary:barlibrary:2.3.0
-keep class com.gyf.barlibrary.* {*;}

##  tablayout  未找到混淆  https://github.com/H07000223/FlycoTabLayout
##  com.flyco.tablayout:FlycoTabLayout_Lib:2.1.2@aar

##  选择器 未找到混淆  https://github.com/Bigkoo/Android-PickerView
##  com.contrarywind:Android-PickerView:4.1.4


##  密码输入框 暂时未找到官方的混淆
##  com.jacktuotuo.customview:verificationcodeview:1.0.3

##  Banner
##  com.youth.banner:banner:1.4.10
# banner 的混淆代码
-keep class com.youth.banner.** {*;}

##  拼音  暂时未找到
##  com.github.promeg:tinypinyin:1.0.0


##  高德地图
##  com.amap.api:3dmap:5.0.0
##  com.amap.api:location:3.3.0
##  com.amap.api:search:5.0.0
# map
-keep   class com.amap.api.maps.**{*;}
-keep   class com.autonavi.**{*;}
-keep   class com.amap.api.trace.**{*;}
#location
-keep class com.amap.api.location.**{*;}
-keep class com.amap.api.fence.**{*;}
-keep class com.autonavi.aps.amapapi.model.**{*;}
#search
-keep   class com.amap.api.services.**{*;}

#2dmap
-keep class com.amap.api.maps2d.**{*;}
-keep class com.amap.api.mapcore2d.**{*;}


##  事件线管理 混淆
##  org.greenrobot:eventbus:3.1.1
-keepattributes *Annotation*
-keepclassmembers class * {
    @org.greenrobot.eventbus.Subscribe <methods>;
}
-keep enum org.greenrobot.eventbus.ThreadMode { *; }
# Only required if you use AsyncExecutor
-keepclassmembers class * extends org.greenrobot.eventbus.util.ThrowableFailureEvent {
    <init>(java.lang.Throwable);
}

##  权限管理  官方暂时未提供
##  com.github.tbruyelle:rxpermissions:0.10.2
-keep class com.tbruyelle.rxpermissions2.** { *; }
-keep interface com.tbruyelle.rxpermissions2.** { *; }

#######极光推送
##  cn.jiguang.sdk:jpush:3.1.6
##  cn.jiguang.sdk:jcore:1.2.5
-dontoptimize
-dontpreverify
-dontwarn cn.jpush.**
-keep class cn.jpush.** { *; }
-keep class * extends cn.jpush.android.helpers.JPushMessageReceiver { *; }
-dontwarn cn.jiguang.**
-keep class cn.jiguang.** { *; }
#==================gson && protobuf==========================
-dontwarn com.google.**
-keep class com.google.gson.** {*;}
-keep class com.google.protobuf.** {*;}



##  glide 图片加载  https://github.com/bumptech/glide
##  com.github.bumptech.glide:glide:3.7.0
-keep public class * implements com.bumptech.glide.module.GlideModule
-keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {
     **[] $VALUES;
     public *;
}


##  图片选择器
##  cn.finalteam.rxgalleryfinal:library:1.1.2
#1.support-v7-appcompat
-keep public class android.support.v7.widget.** { *; }
-keep public class android.support.v7.internal.widget.** { *; }
-keep public class android.support.v7.internal.view.menu.** { *; }

-keep public class * extends android.support.v4.view.ActionProvider {
    public <init>(android.content.Context);
}

##2.rx
-dontwarn io.reactivex.**
#-keep io.reactivex.**
-keepclassmembers class io.reactivex.** { *; }

#3.retrolambda
-dontwarn java.lang.invoke.*

#4.support-v4
-keep class android.support.v4.** { *; }
-keep interface android.support.v4.** { *; }

#5.ucrop
-dontwarn com.yalantis.ucrop**
-keep class com.yalantis.ucrop** { *; }
-keep interface com.yalantis.ucrop** { *; }

#6.photoview
-keep class uk.co.senab.photoview** { *; }
-keep interface uk.co.senab.photoview** { *; }

#7.rxgalleryfinal
-keep class cn.finalteam.rxgalleryfinal.ui.widget** { *; }

-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}
-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}
-keep class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator *;
}
-keepclassmembers class **.R$* {
    public static <fields>;
}

-keepattributes *Annotation*
-keepclasseswithmembernames class * {
    native <methods>;
}
-keepclassmembers public class * extends android.view.View {
   void set*(***);
   *** get*();