increment android build version

gistfile1.txt

def readVersion() {
  def versionFile = new File(project.rootDir, 'version.properties')
  def version = new Properties()
  def stream
  try {
    stream = new FileInputStream(versionFile)
    version.load(stream)
  }catch (FileNotFoundException ignore) {

  }finally {
    if(stream != null) stream.close()
  }

  //safety defaults in case file is missing
  if(!version['major']) version['major'] = "1"
  if(!version['minor']) version['minor'] = "0"
  if(!version['build']) version['build'] = "0"
  return version
}

def readVersionName() {
  def version = readVersion()
  return "${version['major']}.${version['minor']}"
}

def readBuildCode() {
  def version = readVersion()
  def build = version['build'] as int
  return build
}


def incrementBuildNumber() {
  def versionFile = new File.read(project.rootDir, 'version.properties')
  def version = readVersion()

  def build = version['build'] as int
  build++
  version['build'] = build.toString()

  def stream = new FileOutputStream(versionFile)
  try {
    version.store(stream, null)
  }finally {
    stream.close()
  }

  print "Build number is now ..." + build

  return build

}