最近尝试了一下Android的Gradle打包，发现确实比Ant打包会方便很多，特此记录下来。
注：android的gradle现在插件的版本已经是0.14.3了，对于一些老的方法和api，有一些已经被移除，无法使用(http://tools.android.com/tech-docs/new-build-system/migrating-to-1-0-0)，以下这些属性改名，原先的不能用:
runProguard -> minifyEnabled (是否混淆) zipAlign -> zipALignEnabled (是否zip对齐) packageName -> applicationId jniDebugBuild-> jniDebuggable renderscriptDebug->renderscriptDebuggable renderscriptSupportMode->renderscriptSupportModeEnabled renderscriptNdkMode->renderscriptNdkModeEnabled Variant.packageApplication/zipAlign/createZipAlignTask/outputFile/processResources/processManifest使用variant.out代替
1、将Eclipse project转换成Gradle project：
在Project右键->Export->Generate Gradle build files,这样就会在Project多出一下文件：
├── build.gradle ├── gradle │ └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat
gradlew和gradlew.bat分别是*nix下和windows下可执行的脚本，gradle-wrapper.properties用来指定需要下载的gradle的版本，内容如下：
#Wed Apr 10 15:27:10 PDT 2013 distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists distributionUrl=http://services.gradle.org/distributions/gradle-2.2.1-all.zip
build.gradle是用来配置编译选项的文件，附一个能够成功运行的编译脚本：
import java.text.DateFormat import java.text.SimpleDateFormat import java.util.regex.Pattern buildscript { repositories { mavenCentral() } //指定gradle插件版本 dependencies { classpath 'com.android.tools.build:gradle:0.14.+' } } apply plugin: 'android' //添加android依赖libs dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) } //获取系统时间 def buildTime() { def df = new SimpleDateFormat("yyyyMMdd'-'HHmm") df.setTimeZone(TimeZone.getDefault()) return df.format(new Date()) } def apkName = "AndroidGradle" android { compileSdkVersion 18 buildToolsVersion "20.0.0" sourceSets { main { manifest.srcFile 'AndroidManifest.xml' java.srcDirs = ['src'] resources.srcDirs = ['src'] aidl.srcDirs = ['src'] renderscript.srcDirs = ['src'] res.srcDirs = ['res'] assets.srcDirs = ['assets'] } // Move the tests to tests/java, tests/res, etc... instrumentTest.setRoot('tests') } //签名 signingConfigs { release { storeFile file('release.keystore') storePassword '123456' keyAlias 'demo' keyPassword '111111' } } //渠道 productFlavors { free { applicationId 'com.clarck.httpclientnew.free' } premium { applicationId 'com.clarck.httpclientnew.premium' } } //lint检查 lintOptions { abortOnError false } buildTypes { release { //混淆开关 minifyEnabled true //是否zip对齐 zipAlignEnabled true //是否打开debuggable开关 debuggable false //是否打开jniDebuggable开关 jniDebuggable false //混淆配置文件 proguardFiles getDefaultProguardFile('proguard-android.txt') //签名配置 signingConfig signingConfigs.release } android.applicationVariants.all { variant -> def manifestFile = file("AndroidManifest.xml") def pattern = Pattern.compile("versionName="(.+)"") def manifestText = manifestFile.getText() def matcher = pattern.matcher(manifestText) matcher.find() def versionName = matcher.group(1) pattern = Pattern.compile("versionCode="(.+)"") matcher = pattern.matcher(manifestText) matcher.find() def versionCode = matcher.group(1) if (variant.buildType.zipAlignEnabled) { variant.outputs.each { output -> def outputFile = output.outputFile if (outputFile != null && outputFile.name.endsWith('.apk')) { def fileName = "apk/" + applicationId + "-V" + versionName + "-" + versionCode + "-" + variant.name + "-" + buildTime() + ".apk" output.outputFile = new File(outputFile.parent, fileName) } } } else { variant.outputs.each { output -> def outputFile = output.outputFile if (outputFile != null && outputFile.name.endsWith('.apk')) { def fileName = "apk/" + applicationId + "-V" + versionName + "-" + versionCode + "-" + variant.name + "-" + buildTime() + "-unaligned.apk" output.outputFile = new File(outputFile.parent, fileName) } } } } } }
最后执行./gradlew build进行打包即可，输出如下结果就表示打包成功：
:preBuild :compileFreeDebugNdk :preFreeDebugBuild :checkFreeDebugManifest :prepareFreeDebugDependencies :compileFreeDebugAidl :compileFreeDebugRenderscript :generateFreeDebugBuildConfig :generateFreeDebugAssets UP-TO-DATE :mergeFreeDebugAssets :generateFreeDebugResValues UP-TO-DATE :generateFreeDebugResources :mergeFreeDebugResources :processFreeDebugManifest :processFreeDebugResources :generateFreeDebugSources :compileFreeDebugJava :preDexFreeDebug :dexFreeDebug :processFreeDebugJavaRes UP-TO-DATE :validateDebugSigning :packageFreeDebug :zipalignFreeDebug :assembleFreeDebug :compilePremiumDebugNdk :prePremiumDebugBuild :checkPremiumDebugManifest :preparePremiumDebugDependencies :compilePremiumDebugAidl :compilePremiumDebugRenderscript :generatePremiumDebugBuildConfig :generatePremiumDebugAssets UP-TO-DATE :mergePremiumDebugAssets :generatePremiumDebugResValues UP-TO-DATE :generatePremiumDebugResources :mergePremiumDebugResources :processPremiumDebugManifest :processPremiumDebugResources :generatePremiumDebugSources :compilePremiumDebugJava :preDexPremiumDebug :dexPremiumDebug :processPremiumDebugJavaRes UP-TO-DATE :packagePremiumDebug :zipalignPremiumDebug :assemblePremiumDebug :assembleDebug :preFreeReleaseBuild :checkFreeReleaseManifest :prepareFreeReleaseDependencies :compileFreeReleaseAidl :compileFreeReleaseRenderscript :generateFreeReleaseBuildConfig :generateFreeReleaseAssets UP-TO-DATE :mergeFreeReleaseAssets :generateFreeReleaseResValues UP-TO-DATE :generateFreeReleaseResources :mergeFreeReleaseResources :processFreeReleaseManifest :processFreeReleaseResources :generateFreeReleaseSources :compileFreeReleaseJava :lintVitalFreeRelease :compileFreeReleaseNdk :proguardFreeRelease :dexFreeRelease :processFreeReleaseJavaRes UP-TO-DATE :validateReleaseSigning :packageFreeRelease :zipalignFreeRelease :assembleFreeRelease :prePremiumReleaseBuild :checkPremiumReleaseManifest :preparePremiumReleaseDependencies :compilePremiumReleaseAidl :compilePremiumReleaseRenderscript :generatePremiumReleaseBuildConfig :generatePremiumReleaseAssets UP-TO-DATE :mergePremiumReleaseAssets :generatePremiumReleaseResValues UP-TO-DATE :generatePremiumReleaseResources :mergePremiumReleaseResources :processPremiumReleaseManifest :processPremiumReleaseResources :generatePremiumReleaseSources :compilePremiumReleaseJava :lintVitalPremiumRelease SKIPPED :compilePremiumReleaseNdk :proguardPremiumRelease :dexPremiumRelease :processPremiumReleaseJavaRes UP-TO-DATE :packagePremiumRelease :zipalignPremiumRelease :assemblePremiumRelease :assembleRelease :assemble :compileLint :lint Ran lint on variant premiumRelease: 5 issues found Ran lint on variant freeDebug: 5 issues found Ran lint on variant premiumDebug: 5 issues found Ran lint on variant freeRelease: 5 issues found Wrote HTML report to file:/data/gitwork/AutoBuildProject/build/outputs/lint-results.html Wrote XML report to /data/gitwork/AutoBuildProject/build/outputs/lint-results.xml :check :build BUILD SUCCESSFUL Total time: 41.892 secs