Android Studio 中可通过配置 proguard-rules.pro 对生成的 apk 和 jar 进行混淆。
1.Android Studio 创建Module后，会自动生成 proguard-rules.pro 文件，在该文件中进行混淆的配置。如图
# Add project specific ProGuard rules here. # By default, the flags in this file are appended to flags specified # in D:\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 *; #} # Uncomment this to preserve the line number information for # debugging stack traces. #-keepattributes SourceFile,LineNumberTable # If you keep the line number information, uncomment this to # hide the original source file name. #-renamesourcefileattribute SourceFile # Add project specific ProGuard rules here. # By default, the flags in this file are appended to flags specified # in D:\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 *; #} # Uncomment this to preserve the line number information for # debugging stack traces. #-keepattributes SourceFile,LineNumberTable # If you keep the line number information, uncomment this to # hide the original source file name. #-renamesourcefileattribute SourceFile ############################################# # # 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/* ############################################# # # 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 -keep public class android.os.Handler.** -keep public class * extends android.os.Handler # 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 -keepnames class * implements java.io.Serializable -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); void *(**on**); } # 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--------------- #-keepattributes *Annotation* #-----------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。 ##old #-keep class com.juli.blecardsdk.libaries.ble.**{ *; } #-keep class com.juli.blecardsdk.libaries.card_service.bean.**{ *; } #-keep class com.juli.blecardsdk.libaries.protocol_mode.**{ *; } #-keep class com.juli.blecardsdk.libaries.command_mode.base.entitys.**{ *; } #-keep public class * extends com.juli.blecardsdk.libaries.command_mode.base.BaseResponseCodeAnalyser ##-keep class com.juli.blecardsdk.libaries.command_mode.base.BaseResponseCodeAnalyser.** #-keep class com.juli.blecardsdk.libaries.command_mode.base.**{ *; } ##com.juli.blecardsdk.libaries.command_mode.base.entitys #-keep class com.juli.blecardsdk.libaries.sdk_config.**{ *; } #-keep class com.juli.blecardsdk.libaries.ble.common.**{ *; } ## com.juli.blecardsdk.libaries.protocol_mode.base; # #-keep class com.juli.blecardsdk.libaries.command_mode.base.ThreadPoolManager.** #-keep class com.juli.blecardsdk.libaries.card_service.service.BluetoothHandler.BluetoothHandler.** #-keep class etc.obu.service.**{ *; } #-keep class android.bluetooth.BluetoothGatt{*;} #new -keep class com.test.blecardsdk.libaries.ble.data.**{ *; } -keep class com.test.blecardsdk.libaries.ble.utils.**{ *; } -keep class com.test.blecardsdk.libaries.ble.scan.**{ *; } -keep public class * extends com.test.blecardsdk.libaries.command_mode.base.BaseResponseCodeAnalyser -keep class com.test.blecardsdk.libaries.ble.common.**{ *; } # com.juli.blecardsdk.libaries.protocol_mode.base; #-keep class com.test.blecardsdk.libaries.command_mode.base.ThreadPoolManager.** #-keep class com.test.blecardsdk.libaries.card_service.service.BluetoothHandler.BluetoothHandler.** -keep class etc.obu.service.**{ *; } -keep class android.bluetooth.BluetoothGatt{*;} #-keep class com.util.**{ *; } #-keep class com.obu.util.**{ *; } ## protobuf(jpush依赖) -dontwarn com.google.** -keep class com.google.** {*;} -keep class com.google.jlprotobuf.InvalidProtocolBufferException.** # #-keep class com.test.blecardsdk.libaries.**{ *; } #-keep public class * extends java.lang.Throwable {*;} #-keep public class * extends java.lang.Exception {*;} #-keep class com.google.protobuf.micro.** { *; } #-keep class com.google.protobuf.** { *; } #-----------处理第三方依赖库--------- ## 百度地图（jar包换成自己的版本，记得签名要匹配） ##-libraryjars libs/BaiduLBS_Android.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.** ##-keep class com.baidu.** {*;} ##-keep class vi.com.** {*;} ##-dontwarn com.baidu.** # ## ButterKnife #-keep public class * implements butterknife.Unbinder { # public <init>(**, android.view.View); #} #-keep class butterknife.* #-keepclasseswithmembernames class * { # @butterknife.* <methods>; #} #-keepclasseswithmembernames class * { # @butterknife.* <fields>; #} # ## 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 # ## OkHttp #-dontwarn okio.** #-dontwarn okhttp3.** #-dontwarn javax.annotation.Nullable #-dontwarn javax.annotation.ParametersAreNonnullByDefault # ## OkHttp3 #-dontwarn com.squareup.okhttp3.** #-keep class com.squareup.okhttp3.** { *;} #-dontwarn okio.** ## Okio #-dontwarn com.squareup.** #-dontwarn okio.** #-keep public class org.codehaus.* { *; } #-keep public class java.nio.* { *; } # ## 微信支付 #-dontwarn com.tencent.mm.** #-dontwarn com.tencent.wxop.stat.** #-keep class com.tencent.mm.** {*;} #-keep class com.tencent.wxop.stat.**{*;} # ## 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.* # ## greeDAO #-keepclassmembers class * extends org.greenrobot.greendao.AbstractDao { #public static java.lang.String TABLENAME; #} #-keep class **$Properties ## If you do not use SQLCipher: #-dontwarn org.greenrobot.greendao.database.** ## If you do not use Rx: #-dontwarn rx.**
2.配置build.gradle文件如图
apply plugin: 'com.android.library' def releaseTime() { return new Date().format("yyyy.MM.dd", TimeZone.getTimeZone("UTC")) } android { compileSdkVersion 25 defaultConfig { minSdkVersion 18 targetSdkVersion 25 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release{ // 混淆 todo-打jar包的时候变为true minifyEnabled true // Zipalign优化 zipAlignEnabled true // 移除无用的resource文件 Android 3.0以后不需要 // shrinkResources true // 前一部分代表系统默认的android程序的混淆文件，该文件已经包含了基本的混淆声明， // 后一个文件是自己的定义混淆文件 proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' // buildConfigField("boolean","enableLog","false") // applicationVariants.all { variant -> // variant.outputs.each { output -> // def outputFile = output.outputFile // if (outputFile != null && outputFile.name.endsWith('.apk')) { // // 输出apk名称为appname-1.0-beta1-xxxx-xx-xx.apk // def fileName = "etc_park-${defaultConfig.versionName}-v1-${releaseTime()}.apk" // output.outputFile = new File(outputFile.parent, fileName) // } // } // } } debug { } } sourceSets { main { jniLibs.srcDirs = ['libs'] } } lintOptions { abortOnError false } } dependencies { implementation fileTree(include: ['*.jar'], dir: 'libs') } task clearJar(type: Delete) { def fileName = "Sdk-${android.defaultConfig.versionName}${releaseTime()}.jar" delete fileName////这行表示如果你已经打过一次包了，再进行打包则把原来的包删掉 } task makeJar(type: Copy) { // build/intermediates/bundles/release/ from('build/intermediates/bundles/release/') //这行表示要打包的文件的路径，根据下面的内容，其实是该路径下的classes.jar into('build/libs/') //这行表示打包完毕后包的生成路径，也就是生成的包存在哪 include('classes.jar') //看到这行，如果你对分包有了解的话，你就可以看出来这行它只是将一些类打包了 def fileName = "Sdk-${android.defaultConfig.versionName}${releaseTime()}.jar" rename('classes.jar', fileName) } makeJar.dependsOn(clearJar, build)
其中，release 部分配置了开启混淆，保证打包 release 时会进行混淆。debug 不进行混淆，否则无法调试。生成的jar包在路径build/bin/下，jar包名字是fileName的名字，这个jar包其实是将build/intermediates/bundles/release/下的classes.jar包修改了名字然后拷贝到了build/bin 下。
3点击右上角的Gradle选择你的Mudule点击，然后点击other，找到make.jar双击。如图
之后查看你的build/bin文件夹如果有jar包说明执行成功。
参考资料点击打开链接。