Auto increment build number in Android Studio
Android Studio中自动增加编译版本号
修改 app build.gradle,在前面修改为类似:
def vcode = new Date().format('yyyyMMdd').toInteger()
def buildNumber = 0;
def vb = new File("version.build")
if (vb.exists())
   buildNumber = vb.readLines()[0].toInteger()
vb.write((++buildNumber).toString());
android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.comapny.app"
        minSdkVersion 15
        targetSdkVersion 27
        versionCode vcode
        versionName "2.0" + buildNumber.toString()
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }