build.gradle文件配置

def gitVersionCode() {          def cmd = 'git rev-list HEAD --first-parent --count'        cmd.execute().text.trim().toInteger()}def gitVersionTag() {          def cmd = 'git describe --tags'        def version = cmd.execute().text.trim()        def pattern = "-(\\d+)-g"        def matcher = version =~ pattern        if (matcher) {                version = version.substring(0, matcher.start()) + "." + matcher[0][1]        } else {                version = version + ".0"        }        return version}

android {

defaultConfig {    applicationId "com.race604.example"    minSdkVersion 15    targetSdkVersion 23    versionCode gitVersionCode()     versionName gitVersionTag()}......

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