Android Studio 打Jar包和混淆代码。

打Jar包的几种方式：

def SDK_BASENAME = "Sdk";//打包后名字def SDK_VERSION = "_V1.0";//${defaultConfig.versionName}def sdkDestinationPath = "build";//保存目录def zipFile = file('build/intermediates/bundles/release/classes.jar')task deleteBuild(type: Delete) {//删除jar包    delete sdkDestinationPath + "/" + SDK_BASENAME + SDK_VERSION + ".jar"}task makeJar(type: Jar) {//生成jar    from zipTree(zipFile)    from fileTree(dir: 'src/main', includes: ['assets/**'])    baseName = SDK_BASENAME + SDK_VERSION    destinationDir = file(sdkDestinationPath)//目的地}makeJar.dependsOn(deleteBuild, build)//在终端执行生成JAR包// gradlew makeJar

def SDK_BASENAME = "Sdk";//打包后名字def SDK_VERSION = "_V1.0";//${defaultConfig.versionName}def SDK_NAME = SDK_BASENAME + SDK_VERSION + ".jar";//Copy类型task makeJar(type: Copy) {    //删除存在的    delete 'build/libs/' + SDK_NAME    //设置拷贝的文件    from('build/intermediates/bundles/release/')    //打进jar包后的文件目录    into('build/libs/')    //将classes.jar放入build/libs/目录下    //include ,exclude参数来设置过滤    //（我们只关心classes.jar这个文件）    include('classes.jar')    //重命名    rename('classes.jar', SDK_NAME)}makeJar.dependsOn(build)//在终端执行生成JAR包//gradlew makeJar

task clearJar(type: Delete) {    delete 'libs/sdk.jar'}task makeJar(type: org.gradle.api.tasks.bundling.Jar) {    //指定生成的jar名    baseName 'sdk'    //从哪里打包class文件    from('build/intermediates/classes/debug/org/cmdmac/cloud/pluginsdk/')    //打包到jar后的目录结构    into('build/libs/')    //去掉不需要打包的目录和文件    exclude('test/', 'BuildConfig.class', 'R.class')    //去掉R$开头的文件    exclude { it.name.startsWith('R$'); }}makeJar.dependsOn(clearJar, build)//在终端执行生成JAR包//gradlew makeJar

def SDK_BASENAME = "Sdk";//打包后名字def SDK_VERSION = "_V1.0";//${defaultConfig.versionName}def SDK_NAME = SDK_BASENAME + SDK_VERSION + ".jar";def zipFile = file('build/intermediates/bundles/release/classes.jar')def sdkDestinationPath = "build/libs/";//保存目录task makeJar(type: Jar) {//生成jar    delete 'build/libs/' + SDK_NAME    from zipTree(zipFile)    from fileTree(dir: 'src/main', includes: ['assets/**'])    from(project.zipTree('libs/xutils-3.3.4.jar'))    from(project.zipTree('libs/glide-3.7.0.jar'))    from(project.zipTree('libs/xutils-3.3.4.jar'))    baseName = SDK_BASENAME + SDK_VERSION    destinationDir = file(sdkDestinationPath)//目的地}makeJar.dependsOn(build)

选择以上任意一段代码，然后使用以下任意一种方法打Jar包。

方式一：

方式二：

Jar包混淆：

由于这个项目使用了NDK，所以以下NDK配置请略过。

android {    compileSdkVersion versions.compileSdk    buildToolsVersion versions.buildTools    compileOptions {        sourceCompatibility JavaVersion.VERSION_1_7        targetCompatibility JavaVersion.VERSION_1_7    }    defaultConfig {        versionName project.version        minSdkVersion versions.minSdk        targetSdkVersion versions.targetSdk        consumerProguardFiles 'proguard-rules.pro'        testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'        externalNativeBuild {            ndkBuild {                arguments "NDK_DEBUG=${isDebugBuild() ? '1' : '0'}"            }        }    }    externalNativeBuild {        ndkBuild {            path 'src/main/c/Android.mk'        }    }    sourceSets {        main {            //你的源码目录            jniLibs.srcDirs 'src/main/libs'        }    }    repositories {        flatDir {            dirs 'src/main/libs'        }    }    buildTypes {        release {            minifyEnabled false//混淆打包            shrinkResources true//去掉不用资源//            signingConfig signingConfigs.release            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }}

混淆配置需要根据自己项目情况酌情配置，配置文件可以去SDK目录拷贝。