**反编译 **
先介绍一个很厉害的反编译工具吧 ，一步真的只需要一步！！！！

https://github.com/skylot/jadx/releases

下载zip ，双击 jadx-gui，选择你要反编译的apk文件 ok

**混淆 **

#指定代码压缩级别...
-optimizationpasses 5
#包明不混合大小写
-dontusemixedcaseclassnames
#不去忽略非公共的库类
-dontskipnonpubliclibraryclasses
#优化  不优化输入的类文件
-dontoptimize
#预校验
-dontpreverify
#混淆时是否记录日志
-verbose
# 混淆时所采用的算法
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
#忽略警告
-ignorewarning

##-keep 保护指定的类文件和类的成员
-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 com.android.vending.licensing.ILicensingService
#如果有引用v4包可以添加下面这行
-keep public class * extends android.support.v4.app.Fragment

#####################记录生成的日志数据,gradle build时在本项目根目录输出################

#apk 包内所有 class 的内部结构
-dump class_files.txt
#未混淆的类和成员
-printseeds seeds.txt
#列出从 apk 中删除的代码
-printusage unused.txt
#混淆前后的映射
-printmapping mapping.txt

#####################记录生成的日志数据，gradle build时 在本项目根目录输出-end################

#避免混淆泛型 如果混淆报错建议关掉
#–keepattributes Signature

##keepclasseswithmembernames 保护指定的类和类的成员的名称，如果所有指定的类成员出席（在压缩步骤之后）
-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);
}

-keep public class * extends android.view.View {
    public <init>(android.content.Context);
    public <init>(android.content.Context, android.util.AttributeSet);
    public <init>(android.content.Context, android.util.AttributeSet, int);
    public void set*(...);
}

##keepclassmembers 保护指定类的成员，如果此类受到保护他们会保护的更好
-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

-keep class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator *;
}

-keep class * extends java.lang.annotation.Annotation { *; }

########jpush
-dontoptimize
-dontpreverify

-dontwarn cn.jpush.**
-keep class cn.jpush.** { *; }

#==================gson==========================
-dontwarn com.google.**
-keep class com.google.gson.** {*;}

#==================protobuf======================
-dontwarn com.google.**
-keep class com.google.protobuf.** {*;}

# 支付宝钱包
-dontwarn com.alipay.**
-dontwarn HttpUtils.HttpFetcher
-dontwarn com.ta.utdid2.**
-dontwarn com.ut.device.**
-keep class com.alipay.android.app.IAlixPay{*;}
-keep class com.alipay.android.app.IAlixPay$Stub{*;}
-keep class com.alipay.android.app.IRemoteServiceCallback{*;}
-keep class com.alipay.android.app.IRemoteServiceCallback$Stub{*;}
-keep class com.alipay.sdk.app.PayTask{ public *;}
-keep class com.alipay.sdk.app.AuthTask{ public *;}
-keep class com.alipay.mobilesecuritysdk.*
-keep class com.ut.*


# 微信支付
-dontwarn com.tencent.mm.**
-dontwarn com.tencent.wxop.stat.**
-keep class com.tencent.mm.** {*;}
-keep class com.tencent.wxop.stat.**{*;}

# EventBus
-keepattributes *Annotation*
-keepclassmembers class ** {
    @org.greenrobot.eventbus.Subscribe <methods>;
}
-keep enum org.greenrobot.eventbus.ThreadMode { *; }

# sqlcipher
-dontwarn net.sqlcipher.**
-keep class net.sqlcipher.** {*;}

# glide 的混淆代码
-keep public class * implements com.bumptech.glide.module.GlideModule
-keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {
  **[] $VALUES;
  public *;
}
# banner 的混淆代码
-keep class com.youth.banner.** {
    *;
 }

 # ButterKnife
 -keep class butterknife.** { *; }
 -dontwarn butterknife.internal.**
 -keep class **$$ViewBinder { *; }
 -keepclasseswithmembernames class * {
     @butterknife.* <fields>;
 }
 -keepclasseswithmembernames class * {
     @butterknife.* <methods>;
 }

 -dontwarn javax.annotation.**
 -dontwarn javax.inject.**

#########mpaChart
-dontwarn com.github.mikephil.**
-keep class com.github.mikephil.** {*;}

##############youmeng
-keepclassmembers class * {
   public <init> (org.json.JSONObject);
}


#bugly
-dontwarn com.tencent.bugly.**
-keep public class com.tencent.bugly.**{*;}


# RxJava RxAndroid
-dontwarn sun.misc.**
-keepclassmembers class rx.internal.util.unsafe.*ArrayQueue*Field* {
    long producerIndex;
    long consumerIndex;
}
-keepclassmembers class rx.internal.util.unsafe.BaseLinkedQueueProducerNodeRef {
    rx.internal.util.atomic.LinkedQueueNode producerNode;
}
-keepclassmembers class rx.internal.util.unsafe.BaseLinkedQueueConsumerNodeRef {
    rx.internal.util.atomic.LinkedQueueNode consumerNode;
}

# glide
-keep public class * implements com.bumptech.glide.module.GlideModule
-keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {
  **[] $VALUES;
  public *;
}