1.首先需要在app下的build.gradle下配置，true表示編譯時(shí)會(huì)混淆代碼\
2.在proguard-rules.pro中配置，android常用的混淆配置
對(duì)于一些基本指令的添加############################################### 代碼混淆壓縮比，在0~7之間，默認(rèn)為5，一般不做修改
-optimizationpasses 5
混合時(shí)不使用大小寫(xiě)混合，混合后的類(lèi)名為小寫(xiě)
-dontusemixedcaseclassnames
指定不去忽略非公共庫(kù)的類(lèi)
-dontskipnonpubliclibraryclasses
這句話能夠使我們的項(xiàng)目混淆后產(chǎn)生映射文件# 包含有類(lèi)名->混淆后類(lèi)名的映射關(guān)系
-verbose
指定不去忽略非公共庫(kù)的類(lèi)成員
-dontskipnonpubliclibraryclassmembers
不做預(yù)校驗(yàn)，preverify是proguard的四個(gè)步驟之一，Android不需要preverify，去掉這一步能夠加快混淆速度。
-dontpreverify
保留Annotation不混淆
-keepattributes Annotation,InnerClasses
避免混淆泛型
-keepattributes Signature
拋出異常時(shí)保留代碼行號(hào)
-keepattributes SourceFile,LineNumberTable
指定混淆是采用的算法，后面的參數(shù)是一個(gè)過(guò)濾器
這個(gè)過(guò)濾器是谷歌推薦的算法，一般不做更改
-optimizations !code/simplification/cast,!field/,!class/merging/
############################################### Android開(kāi)發(fā)中一些需要保留的公共部分############################################### 保留我們使用的四大組件，自定義的Application等等這些類(lèi)不被混淆# 因?yàn)檫@些子類(lèi)都有可能被外部調(diào)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下的所有類(lèi)及其內(nèi)部類(lèi)
-keep class android.support.** {*;}
保留繼承的
-keep public class * extends android.support.v4.**
-keep public class * extends android.support.v7.**
-keep public class * extends android.support.annotation.**
保留R下面的資源
-keep class .R$ {;}
保留本地native方法不被混淆
-keepclasseswithmembernames class * { native <methods>;}
保留在Activity中的方法參數(shù)是view的方法，
這樣以來(lái)我們?cè)趌ayout中寫(xiě)的onClick就不會(huì)被影響-keepclassmembers class * extends android.app.Activity{ public void *(android.view.View);}
保留枚舉類(lèi)不被混淆
-keepclassmembers enum * { public static **[] values(); public static ** valueOf(java.lang.String);}
保留我們自定義控件（繼承自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序列化類(lèi)不被混淆
-keep class * implements android.os.Parcelable { public static final android.os.Parcelable$Creator *;}
保留Serializable序列化的類(lèi)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();}
對(duì)于帶有回調(diào)函數(shù)的onXXEvent、*OnListener的，不能被混淆
-keepclassmembers class * { void (OnEvent); void (OnListener);}
webView處理，項(xiàng)目中沒(méi)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類(lèi)打印各個(gè)等級(jí)日志的代碼，打正式包的時(shí)候可以做為禁log使用，這里可以作為禁止log打印的功能使用
記得proguard-android.txt中一定不要加-dontoptimize才起作用
另外的一種實(shí)現(xiàn)方案是通過(guò)BuildConfig.DEBUG的變量來(lái)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(...);
某個(gè)包下的類(lèi)不用混淆
-------------處理本應(yīng)用不需要混淆的代碼-------------------
keep class com.android.smarttouch.ctrl.** { *; }
網(wǎng)絡(luò)上有許多混淆規(guī)則的代碼，看官方文檔最好：gradle example，這里面有對(duì)各種sdk和library混淆時(shí)候時(shí)已經(jīng)寫(xiě)好的混淆代碼，直接去抄里面的示例代碼就好。混淆時(shí)最麻煩的幾點(diǎn)就是：
第三方lib包的混淆（不再有警告提醒）比如對(duì)apache的common包，dom4j的混淆，可以不用混淆
##############################################
不警告
-dontwarn org.dom4j.**
不混淆
-keep class org.dom4j.** { ; }
-dontwarn org.apache.*
-keep class org.apache.** { ; }
-dontwarn org.xmlpull.*
-keep class org.xmlpull.** { ; }
-dontwarn com.jcraft.*
-keep class com.jcraft.** { *; }
3.不能混淆的代碼
顧名思義，不能混淆代碼如果被混淆了，就會(huì)出現(xiàn)錯(cuò)誤。
1）需要反射的代碼
2）系統(tǒng)接口
3）Jni接口
4）需要序列號(hào)和反序列化的代碼（即實(shí)現(xiàn)Serializable接口的JavaBean）
5）與服務(wù)端進(jìn)行元數(shù)據(jù)交互的JavaBean（JSON、XML中對(duì)應(yīng)的類(lèi)）
4.常見(jiàn)錯(cuò)誤
Proguard returned with error code 1. See console
更新proguard版本
Android-support-v4 不進(jìn)行混淆
添加缺少相應(yīng)的庫(kù)-
使用gson包解析數(shù)據(jù)時(shí)，出現(xiàn) missing type parameter 異常
在 proguard-project.txt 中添加
-dontobfuscate
-dontoptimize
在 proguard-project.txt 中添加removes such information by default, so configure it to keep all of it.
-keepattributes Signature
Gson specific classes
-keep class sun.misc.Unsafe { *; }
-keep class com.google.gson.stream.* { ; }
Application classes that will be serialized/deserialized over Gson
-keep class com.google.gson.examples.android.model.* { ; }
類(lèi)型轉(zhuǎn)換錯(cuò)誤
在 proguard-project.txt 中添加
-keepattributes Signature空指針異常
混淆過(guò)濾掉相關(guān)類(lèi)與方法java.lang.reflect.UndeclaredThrowableException
-keep interface com.dev.impl.**Error: Unable to access jarfile ..libproguard.jar
路徑問(wèn)題java.lang.NoSuchMethodError
這也是最常見(jiàn)的問(wèn)題，因?yàn)檎也坏较嚓P(guān)方法，方法被混淆了，混淆過(guò)濾掉相關(guān)方法便可。
5.示例：
---------------------------------1.實(shí)體類(lèi)---------------------------------
-keep class com.package.bean.** { *; }
-------------------------------------------------------------------------
---------------------------------2.第三方包-------------------------------
eventBus
-keepattributes Annotation
-keepclassmembers class ** {
@org.greenrobot.eventbus.Subscribe <methods>;
}
-keep enum org.greenrobot.eventbus.ThreadMode { *; }
-keepclassmembers class * extends org.greenrobot.eventbus.util.ThrowableFailureEvent {
<init>(java.lang.Throwable);
}
glide
-keep public class * implements com.bumptech.glide.module.GlideModule
-keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {
*[] $VALUES;
public ;
}
-keep class com.bumptech.glide. { *; }
retrofit2
-dontwarn retrofit2.**
-keep class retrofit2.** { *; }
-keepattributes Signature
-keepattributes Exceptions
-dontwarn org.robovm.**
-keep class org.robovm.** { *; }
okhttp3
-dontwarn com.squareup.okhttp3.**
-keep class com.squareup.okhttp3.** { ;}
-keep class okhttp3.* { ;}
-keep class okio.* { ;}
-dontwarn sun.security.*
-keep class sun.security.** { ;}
-dontwarn okio.*
-dontwarn okhttp3.**
rxjava
-dontwarn rx.**
-keep class rx.** { *; }
-dontwarn sun.misc.**
-keepclassmembers class rx.internal.util.unsafe.ArrayQueueField* {
long producerIndex;
long consumerIndex;
}
-keepclassmembers class rx.internal.util.unsafe.BaseLinkedQueueProducerNodeRef {
rx.internal.util.atomic.LinkedQueueNode producerNode;
}
-keepclassmembers class rx.internal.util.unsafe.BaseLinkedQueueConsumerNodeRef {
rx.internal.util.atomic.LinkedQueueNode consumerNode;
}
baidu
-keep class com.baidu.** { ; }
-dontwarn com.baidu.*
alipay
-keep class com.alipay.android.app.IAlixPay{;}
-keep class com.alipay.android.app.IAlixPay$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.
-dontwarn android.net.**
-keep class android.net.** { *; }
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();
}
-dontwarn com.google.gson.**
umeng
-dontwarn com.umeng.**
-keep class com.umeng.{;}
-keep class u.aly.{;}
-keep class com.google.*{;}
butterknife
-keep class butterknife.** { ; }
-dontwarn butterknife.internal.*
-keep class **$$ViewBinder { *; }
-keepclasseswithmembernames class * {
@butterknife.* <fields>;
}
-keepclasseswithmembernames class * {
@butterknife.* <methods>;
}
pinyin4j
-dontwarn net.soureceforge.pinyin4j.**
-dontwarn demo.**
-libraryjars src/libs/pinyin4j-2.5.0.jar
-keep class net.sourceforge.pinyin4j.** { ;}
-keep class demo.* { ;}
-keep class com.hp.* { *;}
httpclient (org.apache.http.legacy.jar)
-dontwarn android.net.compatibility.**
-dontwarn android.net.http.**
-dontwarn com.android.internal.http.multipart.**
-dontwarn org.apache.commons.**
-dontwarn org.apache.http.**
-dontwarn org.apache.http.protocol.**
-keep class android.net.compatibility.*{;}
-keep class android.net.http.*{;}
-keep class com.android.internal.http.multipart.{;}
-keep class org.apache.commons.{;}
-keep class org.apache.org.{;}
-keep class org.apache.harmony.{;}
lib-wheel
-dontwarn kankan.wheel.**
-keep class kankan.wheel.*{;}
PhotoPicker
-dontwarn me.iwf.photopicker.**
-keep class me.iwf.photopicker.*{;}
nineoldandroids
-dontwarn com.nineoldandroids.*
-keep class com.nineoldandroids.** { *;}
weixin
-dontwarn com.tencent.mm.**
-keep class com.tencent.mm.*{;}
topsnackbar
-dontwarn com.androidadvance.topsnackbar.**
-keep class com.androidadvance.topsnackbar.*{;}
pull_recyclerview_library
-dontwarn com.cundong.recyclerview.**
-keep class com.cundong.recyclerview.*{;}
-------------------------------------------------------------------------
---------------------------------3.與js互相調(diào)用的類(lèi)------------------------
-------------------------------------------------------------------------
---------------------------------4.反射相關(guān)的類(lèi)和方法-----------------------
----------------------------------------------------------------------------
-------------------------------------------基本不用動(dòng)區(qū)域--------------------------------------------
---------------------------------基本指令區(qū)----------------------------------
-optimizationpasses 5
-dontskipnonpubliclibraryclassmembers
-printmapping proguardMapping.txt
-optimizations !code/simplification/cast,!field/,!class/merging/
-keepattributes Annotation,InnerClasses
-keepattributes Signature
-keepattributes SourceFile,LineNumberTable
-ignorewarnings
----------------------------------------------------------------------------
---------------------------------默認(rèn)保留區(qū)---------------------------------
-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 * extends android.view.View
-keep public class com.android.vending.licensing.ILicensingService
-keep class android.support.** {*;}
-keep public class * extends android.os.IInterface
-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);
}
-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$ {
;
}
-keepclassmembers class * {
void (OnEvent);
}
-keepclasseswithmembernames class * { # 保持 native 方法不被混淆
native <methods>;
}
-keepclasseswithmembers class * { # 保持自定義控件類(lèi)不被混淆
public <init>(android.content.Context, android.util.AttributeSet);
}
-keepclasseswithmembers class * {# 保持自定義控件類(lèi)不被混淆
public <init>(android.content.Context, android.util.AttributeSet, int);
}
-keepclassmembers class * extends android.app.Activity { # 保持自定義控件類(lèi)不被混淆
public void *(android.view.View);
}
-keepclassmembers enum * { # 保持枚舉 enum 類(lèi)不被混淆
public static **[] values();
public static ** valueOf(java.lang.String);
}
-keep class * implements android.os.Parcelable { # 保持 Parcelable 不被混淆
public static final android.os.Parcelable$Creator *;
}
----------------------------------------------------------------------------
---------------------------------webview------------------------------------
-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);
}
