2018andoid混淆打包遇到Execution failed for task ':app:transformClassesAndResourcesWithProguardForRelease'.

在正式打包中，加上了

然后打包过程中，build中就报出了

Execution failed for task ‘:app:transformClassesAndResourcesWithProguardForRelease’.

然后就goodle了一下,最简单有效的回复，就是在
proguard-rules.pro 文件中加入 -ignorewarnings

但是在我这可能就不太实用，我打包没问题，但是装到手机上就崩溃了。。QAQ。。

最后采用了最实际的方法，根据它的提示，找到项目中的所有warnings 修改。

找到报warning的类都给他在你的proguard-rules.pro混淆器文件中
添加代码-dontwarn 包名+类名.** 给取消掉warning就可以了,
如果你不想那个类被混淆,那就添加代码:-keep class 包名+类名{;}或者包名.{;}**

给大家介绍一些常用第三方混淆配置

# AndroidEventBus
-keep class org.simple.** { *; }
-keep interface org.simple.** { *; }
-keepclassmembers class * {
    @org.simple.eventbus.Subscriber ;
}


# 百度地图（jar包换成自己的版本，记得签名要匹配）
-libraryjars libs/baidumapapi_v2_1_3.jar
-keep class com.baidu.** {*;}
-keep class vi.com.** {*;}
-keep class com.sinovoice.** {*;}
-keep class pvi.com.** {*;}
-dontwarn com.baidu.**
-dontwarn vi.com.**
-dontwarn pvi.com.**


# BRVAH
-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 public class * extends com.chad.library.adapter.base.BaseViewHolder {
    (android.view.View);
}


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


# ButterKnife
-keep public class * implements butterknife.Unbinder {
    public (**, android.view.View);
}
-keep class butterknife.*
-keepclasseswithmembernames class * {
    @butterknife.* ;
}
-keepclasseswithmembernames class * {
    @butterknife.* ;
}


# Dagger2
-dontwarn com.google.errorprone.annotations.*


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


# Facebook
-keep class com.facebook.** {*;}
-keep interface com.facebook.** {*;}
-keep enum com.facebook.** {*;}


# FastJson
-dontwarn com.alibaba.fastjson.**
-keep class com.alibaba.fastjson.** { *; }
-keepattributes Signature
-keepattributes *Annotation*


# Fresco
-keep class com.facebook.fresco.** {*;}
-keep interface com.facebook.fresco.** {*;}
-keep enum com.facebook.fresco.** {*;}


# 高德相关依赖
# 集合包:3D地图3.3.2 导航1.8.0 定位2.5.0
-dontwarn com.amap.api.**
-dontwarn com.autonavi.**
-keep class com.amap.api.**{*;}
-keep class com.autonavi.**{*;}
# 地图服务
-dontwarn com.amap.api.services.**
-keep class com.map.api.services.** {*;}
# 3D地图
-dontwarn com.amap.api.mapcore.**
-dontwarn com.amap.api.maps.**
-dontwarn com.autonavi.amap.mapcore.**
-keep class com.amap.api.mapcore.**{*;}
-keep class com.amap.api.maps.**{*;}
-keep class com.autonavi.amap.mapcore.**{*;}
# 定位
-dontwarn com.amap.api.location.**
-dontwarn com.aps.**
-keep class com.amap.api.location.**{*;}
-keep class com.aps.**{*;}
# 导航
-dontwarn com.amap.api.navi.**
-dontwarn com.autonavi.**
-keep class com.amap.api.navi.** {*;}
-keep class com.autonavi.** {*;}


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


### greenDAO 3
-keepclassmembers class * extends org.greenrobot.greendao.AbstractDao {
public static java.lang.String TABLENAME;
        94  }
-keep class **$Properties

# If you do not use SQLCipher:
-dontwarn org.greenrobot.greendao.database.**
# If you do not use RxJava:
-dontwarn rx.**


# Gson
-keepattributes Signature
-keepattributes *Annotation*
-keep class sun.misc.Unsafe { *; }
-keep class com.google.gson.stream.** { *; }
# 使用Gson时需要配置Gson的解析对象及变量都不混淆。不然Gson会找不到变量。
# 将下面替换成自己的实体类
#-keep class com.example.bean.** { *; }


# Jackson
-dontwarn org.codehaus.jackson.**
-dontwarn com.fasterxml.jackson.databind.**
-keep class org.codehaus.jackson.** { *;}
-keep class com.fasterxml.jackson.** { *; }


# 极光推送
-dontoptimize
-dontpreverify
-dontwarn cn.jpush.**
-keep class cn.jpush.** { *; }


# OkHttp
-dontwarn okio.**
-dontwarn okhttp3.**
-dontwarn javax.annotation.Nullable
-dontwarn javax.annotation.ParametersAreNonnullByDefault


# Okio
-dontwarn com.squareup.**  
-dontwarn okio.**  
-keep public class org.codehaus.* { *; }  
-keep public class java.nio.* { *; }


# OrmLite
-keepattributes *DatabaseField* 
-keepattributes *DatabaseTable* 
-keepattributes *SerializedName*  
-keep class com.j256.**
-keepclassmembers class com.j256.** { *; }
-keep enum com.j256.**
-keepclassmembers enum com.j256.** { *; }
-keep interface com.j256.**
-keepclassmembers interface com.j256.** { *; }


# Realm
-keep class io.realm.annotations.RealmModule
-keep @io.realm.annotations.RealmModule class *
-keep class io.realm.internal.Keep
-keep @io.realm.internal.Keep class * { *; }
-dontwarn javax.**
-dontwarn io.realm.**


# Retrofit
-keep class retrofit2.** { *; }
-dontwarn retrofit2.**
-keepattributes Signature
-keepattributes Exceptions
-dontwarn okio.**
-dontwarn javax.annotation.**


# Retrolambda
-dontwarn java.lang.invoke.*


# 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;
}
-dontnote rx.internal.util.PlatformDependent


# Universal-Image-Loader-v1.9.5
-libraryjars libs/universal-image-loader-1.9.5-SNAPSHOT-with-sources.jar
-dontwarn com.nostra13.universalimageloader.**
-keep class com.nostra13.universalimageloader.** { *; }


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


# 信鸽
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep class com.tencent.android.tpush.**  {* ;}
-keep class com.tencent.mid.**  {* ;}
-keepattributes *Annotation*


# 新浪微博
-keep class com.sina.weibo.sdk.* { *; }
-keep class android.support.v4.* { *; }
-keep class com.tencent.* { *; }
-keep class com.baidu.* { *; }
-keep class lombok.ast.ecj.* { *; }
-dontwarn android.support.v4.**
-dontwarn com.tencent.**s
-dontwarn com.baidu.**


# XLog
-keep class com.tencent.mars.** { *; }
-keepclassmembers class com.tencent.mars.** { *; }
-dontwarn com.tencent.mars.**


# 讯飞语音
-dontwarn com.iflytek.**
-keep class com.iflytek.** {*;}


# xUtils3.0
-keepattributes Signature,Annotation
-keep public class org.xutils.** {
public protected *;
}
-keep public interface org.xutils.** {
public protected *;
}
-keepclassmembers class * extends org.xutils.** {
public protected *;
}
-keepclassmembers @org.xutils.db.annotation.* class * {;}
-keepclassmembers @org.xutils.http.annotation. class * {*;}
-keepclassmembers class * {
@org.xutils.view.annotation.Event ;
}


# 银联
-dontwarn com.unionpay.**
-keep class com.unionpay.** { *; }


# 友盟统计分析
-keepclassmembers class * { public <init>(org.json.JSONObject); }
-keepclassmembers enum com.umeng.analytics.** {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}


# 友盟自动更新
-keepclassmembers class * { public <init>(org.json.JSONObject); }
-keep public class cn.irains.parking.cloud.pub.R$*{ public static final int *; }
-keep public class * extends com.umeng.**
-keep class com.umeng.** { *; }


# 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.*

这个要根据实际情况，这只是我本人的warnings,具体还是要看你们报错提示的Message.

最后，完事！