gradle for android 自动找当前环境当前最高版本的 sdk 和 build tools

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文件 androidVersion.gradle

//---------------------------// tools function// see: http://www.egeek.me/2013/12/07/gradle-auto-detect-android-sdk-and-build-tools-versions/import org.codehaus.groovy.runtime.StackTraceUtilsint[] sdksAvailable() {    def sdks = new ByteArrayOutputStream()    exec {        commandLine 'android', 'list'        standardOutput = sdks    }    sdks = sdks            // get the output            .toString()            // split to strings            .split('\n')            // leave only strings with API levels            .findAll { it ==~ /\s*API level:.*/ }            // extract the API levels            .collect { (it =~ /\s*API level:\s*(\d+).*/)[0][1].toInteger() }            // sort from highest to lowest            .sort( { a, b -> b <=> a } )    sdks}int highestSdkAvailable(int defaultSdk) {    try {        def sdks = sdksAvailable()        def highestSdk = sdks[0]        if (highestSdk != null) {            println "Using highest found SDK " + highestSdk            highestSdk        } else {            println "No installed SDKs found. Using default SDK " + defaultSdk            defaultSdk        }    } catch (any) {        //println "Exception while determining highest SDK. Using default SDK " + defaultSdk        //StackTraceUtils.sanitize(any).printStackTrace()        defaultSdk    }}String androidSDKDir() {    def androidExecPath = new ByteArrayOutputStream()    exec {        commandLine 'which', 'android'        standardOutput = androidExecPath    }    file(androidExecPath.toString().trim()).getParentFile().getParentFile()}String[] buildToolsAvailable() {    def buildToolsDir = new File(androidSDKDir(), "build-tools")    buildToolsDir.list().sort { a, b -> b <=> a }}String latestBuildToolsAvailable(String defaultBuildTools) {    try {        def buildToolsVersions = buildToolsAvailable()        def latestBuildTools = buildToolsVersions[0]        if (latestBuildTools != null) {            println "Using latest found build tools " + latestBuildTools            latestBuildTools        } else {            println "No installed build tools found. Using default build tools " +                    defaultBuildTools            defaultBuildTools        }    } catch (any) {        //println "Exception while determining latest build tools. Using default build tools " + defaultBuildTools        //StackTraceUtils.sanitize(any).printStackTrace()        defaultBuildTools    }}ext {    androidVer = [:]    androidVer['highestSdkAvailable'] = highestSdkAvailable(19)    androidVer['latestBuildToolsAvailable'] = latestBuildToolsAvailable("23.0.3")}

用法，build.gradle 那边：

apply from: '../tools/androidVersion.gradle'android {    compileSdkVersion androidVer['highestSdkAvailable']    buildToolsVersion androidVer['latestBuildToolsAvailable']

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