相信很多同学都遇到混淆的各种问题，最后半途而废了，以下是我成功混淆的代码，供大家参考。

release {
    minifyEnabled true
    shrinkResources true
    zipAlignEnabled true
    signingConfig signingConfigs.signconfig
    proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}

# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in C:\Users\11829\AppData\Local\Android\Sdk/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the proguardFiles
# directive in build.gradle.
#
# For more details, see
#   http://developer.android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
#   public *;
#}
#############################################
#
# 对于一些基本指令的添加
#
#############################################
# 代码混淆压缩比，在0~7之间，默认为5，一般不做修改
-optimizationpasses 5

# 混合时不使用大小写混合，混合后的类名为小写
-dontusemixedcaseclassnames

# 指定不去忽略非公共库的类
-dontskipnonpubliclibraryclasses

# 这句话能够使我们的项目混淆后产生映射文件
# 包含有类名->混淆后类名的映射关系
-verbose

# 指定不去忽略非公共库的类成员
-dontskipnonpubliclibraryclassmembers

# 不做预校验，preverify是proguard的四个步骤之一，Android不需要preverify，去掉这一步能够加快混淆速度。
-dontpreverify

# 保留Annotation不混淆
-keepattributes *Annotation*,InnerClasses

# 避免混淆泛型
-keepattributes Signature

# 抛出异常时保留代码行号
-keepattributes SourceFile,LineNumberTable

# 指定混淆是采用的算法，后面的参数是一个过滤器
# 这个过滤器是谷歌推荐的算法，一般不做更改
-optimizations !code/simplification/cast,!field/*,!class/merging/*
#代码文件都移动到根包目录下，即在 / 包之下
-repackageclasses com.hangzhou.h890.meihao

#############################################
#
# Android开发中一些需要保留的公共部分
#
#############################################

# 保留我们使用的四大组件，自定义的Application等等这些类不被混淆
# 因为这些子类都有可能被外部调用
-keep public class * extends android.app.Activity
-keep public class * extends android.app.Appliction
-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


# 保留support下的所有类及其内部类
-keep class android.support.** {*;}

# 保留继承的
-keep public class * extends android.support.v4.**
-keep public class * extends android.support.v7.**
-keep public class * extends android.support.annotation.**

# 保留R下面的资源
-keep class **.R$* {*;}

# 保留本地native方法不被混淆
-keepclasseswithmembernames class * {
    native <methods>;
}

# 保留在Activity中的方法参数是view的方法，
# 这样以来我们在layout中写的onClick就不会被影响
-keepclassmembers class * extends android.app.Activity{
    public void *(android.view.View);
}

# 保留枚举类不被混淆
-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

# 保留我们自定义控件（继承自View）不被混淆
-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);
}

# 保留Parcelable序列化类不被混淆
-keep class * implements android.os.Parcelable {
    public static final android.os.Parcelable$Creator *;
}

# 保留Serializable序列化的类不被混淆
-keepclassmembers class * implements java.io.Serializable {
    static final long serialVersionUID;
    private static final java.io.ObjectStreamField[] serialPersistentFields;
    !static !transient <fields>;
    !private <fields>;
    !private <methods>;
    private void writeObject(java.io.ObjectOutputStream);
    private void readObject(java.io.ObjectInputStream);
    java.lang.Object writeReplace();
    java.lang.Object readResolve();
}

# 对于带有回调函数的onXXEvent、**On*Listener的，不能被混淆
-keepclassmembers class * {
    void *(**On*Event);
    void *(**On*Listener);
}

# webView处理，项目中没有使用到webView忽略即可
-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);
}

# 移除Log类打印各个等级日志的代码，打正式包的时候可以做为禁log使用，这里可以作为禁止log打印的功能使用
# 记得proguard-android.txt中一定不要加-dontoptimize才起作用
# 另外的一种实现方案是通过BuildConfig.DEBUG的变量来控制
-assumenosideeffects class android.util.Log {
    public static int v(...);
    public static int i(...);
    public static int w(...);
    public static int d(...);
    public static int e(...);
}

#############################################
#
# 项目中特殊处理部分
#
#############################################

#-----------处理反射类---------------



#-----------处理js交互---------------



#-----------处理实体类---------------
# 在开发的时候我们可以将所有的实体类放在一个包内，这样我们写一次混淆就行了。
#-keep public class com.ljd.example.entity.** {
#    public void set*(***);
#    public *** get*();
#    public *** is*();
#}
-keep public class com.hangzhou.h890.meihao.account.model.**{*;}
-keep public class com.zyf.fwms.commonlibrary.**{*;}
-keep public class com.github.lzyzsd.jsbridge.**{*;}
-keep public class com.hangzhou.h890.meihao.home.model.**{*;}
-keep public class com.hangzhou.h890.meihao.base.**{*;}
-keep public class com.hangzhou.h890.meihao.home_inner.model.**{*;}
-keep public class com.hangzhou.h890.meihao.yet_buy.model.**{*;}
-keep public class com.hangzhou.h890.meihao.mine.model.**{*;}
-keep public class com.hangzhou.h890.meihao.today.model.**{*;}
-keep public class com.hangzhou.h890.meihao.product_class.model.**{*;}






#-----------处理第三方依赖库---------
#-------butterknife-----------
-keep class butterknife.** { *; }
-dontwarn butterknife.internal.**
-keep class **$$ViewBinder { *; }

-keepclasseswithmembernames class * {
    @butterknife.* <fields>;
}

-keepclasseswithmembernames class * {
    @butterknife.* <methods>;
}
#-------retrofit2----------
-dontwarn javax.annotation.**
-dontwarn javax.inject.**
# OkHttp3
-dontwarn okhttp3.logging.**
-keep class okhttp3.internal.**{*;}
-dontwarn okio.**
# Retrofit
-dontwarn retrofit2.**
-keep class retrofit2.** { *; }

# 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;
}

# Gson
-keep class com.google.gson.stream.** { *; }
-keepattributes EnclosingMethod

#----kprogresshud----
#-----takephoto-----
-keep class com.jph.takephoto.** { *; }
-dontwarn com.jph.takephoto.**

-keep class com.darsh.multipleimageselect.** { *; }
-dontwarn com.darsh.multipleimageselect.**

-keep class com.soundcloud.android.crop.** { *; }
-dontwarn com.soundcloud.android.crop.**

#-------glide------
-keep public class * implements com.bumptech.glide.module.GlideModule
-keep public class * extends com.bumptech.glide.AppGlideModule
-keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {
  **[] $VALUES;
  public *;
}
#-------databinding------
-dontwarn android.databinding.**
-keep class android.databinding.** { *; }
#--------sentry------------
-keepattributes LineNumberTable,SourceFile
-dontwarn org.slf4j.**
-dontwarn javax.**
#----------阿里云直播-----------
-keep public class com.alivc.player.**{*;}
#-----------微信支付--------------
-dontwarn com.tencent.mm.**
-dontwarn com.tencent.wxop.stat.**
-keep class com.tencent.mm.** {*;}
-keep class com.tencent.wxop.stat.**{*;}
#-----------x5--------------
-dontwarn com.tencent.smtt.**
-keep class com.tencent.smtt.** {*;}
-dontwarn com.tencent.tbs.**
-keep class com.tencent.tbs.** {*;}

#-----------支付宝支付-----
-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.sdk.app.H5PayCallback {
    <fields>;
    <methods>;
}
-keep class com.alipay.android.phone.mrpc.core.** { *; }
-keep class com.alipay.apmobilesecuritysdk.** { *; }
-keep class com.alipay.mobile.framework.service.annotation.** { *; }
-keep class com.alipay.mobilesecuritysdk.face.** { *; }
-keep class com.alipay.tscenter.biz.rpc.** { *; }
-keep class org.json.alipay.** { *; }
-keep class com.alipay.tscenter.** { *; }
-keep class com.ta.utdid2.** { *;}
-keep class com.ut.device.** { *;}


#------忽略警告--------
-ignorewarnings

#--------阿里路由-------
-keep public class com.alibaba.android.arouter.routes.**{*;}
-keep class * implements com.alibaba.android.arouter.facade.template.ISyringe{*;}

#--------神策---------
-dontwarn com.sensorsdata.analytics.android.**
-keep class com.sensorsdata.analytics.android.** {
*;
}
-keep class **.R$* {
    <fields>;
}
-keep public class * extends android.content.ContentProvider
-keepnames class * extends android.view.View

-keep class * extends android.app.Fragment {
 public void setUserVisibleHint(boolean);
 public void onHiddenChanged(boolean);
 public void onResume();
 public void onPause();
}
-keep class android.support.v4.app.Fragment {
 public void setUserVisibleHint(boolean);
 public void onHiddenChanged(boolean);
 public void onResume();
 public void onPause();
}
-keep class * extends android.support.v4.app.Fragment {
 public void setUserVisibleHint(boolean);
 public void onHiddenChanged(boolean);
 public void onResume();
 public void onPause();
}
#-------------小熊在线客服-------------
-dontwarn cn.xiaoneng.**
-dontwarn android.support.v4xn.**
-dontwarn orgxn.fusesource.**
-keep class cn.xiaoneng.** {*;}
-keep class android.support.v4xn.** {*;}
-keep class orgxn.fusesource.** {*;}


# --------------阿里热修复--------------
#基线包使用，生成mapping.txt
-printmapping mapping.txt
#生成的mapping.txt在app/buidl/outputs/mapping/release路径下，移动到/app路径下
#修复后的项目使用，保证混淆结果一致
-applymapping mapping.txt
#hotfix
-keep class com.taobao.sophix.**{*;}
-keep class com.ta.utdid2.device.**{*;}