如何使用Android Studio打包混淆的Jar

参考文章

1.在你的library的build.gradle文件中加入如下代码：

android {

buildTypes {
            release {
                minifyEnabled true
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
            }
        }

}

 task proguardJar(type: proguard.gradle.ProGuardTask, dependsOn: "build") {
   // 未混淆的jar路径    
 injars 'build/intermediates/bundles/release/classes.jar'
   // 混淆后的jar输出路径   
 outjars 'build/outputs/cocolove2-banner-1.1.0.jar'  
  // 混淆协议
  configuration 'proguard-rules.pro'
}

配置混淆协议

1.我们先把AS自带的协议配置进来中文注释，笔者添加

---

# This is a configuration file for ProGuard.
# http://proguard.sourceforge.net/index.html#manual/usage.html
#
# Starting with version 2.2 of the Android plugin for Gradle, these files are no longer used. Newer
# versions are distributed with the plugin and unpacked at build time. Files in this directory are
# no longer maintained.
 
#表示混淆时不使用大小写混合类名
-dontusemixedcaseclassnames
#表示不跳过library中的非public的类
-dontskipnonpubliclibraryclasses
#打印混淆的详细信息
-verbose
 
# Optimization is turned off by default. Dex does not like code run
# through the ProGuard optimize and preverify steps (and performs some
# of these optimizations on its own).
-dontoptimize
##表示不进行校验,这个校验作用 在java平台上的
-dontpreverify
# Note that if you want to enable optimization, you cannot just
# include optimization flags in your own project configuration file;
# instead you will need to point to the
# "proguard-android-optimize.txt" file instead of this one from your
# project.properties file.
 
-keepattributes *Annotation*
-keep public class com.google.vending.licensing.ILicensingService
-keep public class com.android.vending.licensing.ILicensingService
 
# For native methods, see http://proguard.sourceforge.net/manual/examples.html#native
-keepclasseswithmembernames class * {
    native <methods>;
}
 
# keep setters in Views so that animations can still work.
# see http://proguard.sourceforge.net/manual/examples.html#beans
-keepclassmembers public class * extends android.view.View {
   void set*(***);
   *** get*();
}
 
# We want to keep methods in Activity that could be used in the XML attribute onClick
-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}
 
# For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations
-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}
 
-keepclassmembers class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator CREATOR;
}
 
-keepclassmembers class **.R$* {
    public static <fields>;
}
 
# The support library contains references to newer platform versions.
# Don't warn about those in case this app is linking against an older
# platform version.  We know about them, and they are safe.
-dontwarn android.support.**
 
# Understand the @Keep support annotation.
-keep class android.support.annotation.Keep
 
-keep @android.support.annotation.Keep class * {*;}
 
-keepclasseswithmembers class * {
    @android.support.annotation.Keep <methods>;
}
 
-keepclasseswithmembers class * {
    @android.support.annotation.Keep <fields>;
}
 
-keepclasseswithmembers class * {
    @android.support.annotation.Keep <init>(...);
}

---

2.AS自带的配置文档还是不够的，我们还需要加入如下配置
这里只展示基本操作，在实际开发中可能需要更多依赖，要根据具体情况引入自己需要的依赖包

---

#下面代码中的xx是指我个人的配置路径,涉及个人信息，这里以xx代替
#引入依赖包rt.jar（jdk路径）
-libraryjars /xxx/xx/xx/jdk1.8.0_77.jdk/Contents/Home/jre/lib/rt.jar
#引入依赖包android.jar(android SDK路径)
-libraryjars /xx/xx/xx/Android/sdk/platforms/android-24/android.jar
#如果用到Appcompat包，需要引入
-libraryjars /xxx/xxx/xx/xxx/MyApplication/library-banner/build/intermediates/exploded-aar/com.android.support/appcompat-v7/24.1.1/jars/classes.jar
-libraryjars /xx/xx/xx/xx/MyApplication/library-banner/build/intermediates/exploded-aar/com.android.support/support-v4/24.1.1/jars/classes.jar
 
#忽略警告
-ignorewarnings
#保证是独立的jar,没有任何项目引用,如果不写就会认为我们所有的代码是无用的,从而把所有的代码压缩掉,导出一个空的jar
-dontshrink
#保护泛型
-keepattributes Signature

---

3.加入自己不想混淆的配置根据实际需求配置

4.在你的Terminal中执行gradlew proguardJar，提示BUILD SUCCESFUL表示成功！