Android change app icon with fastlane

android-change-appicon.rb

    unless iconDownloadUrl.empty?
      tempfile = Down.download(iconDownloadUrl)
      android_appicon(
        appicon_image_file: tempfile.path,
        appicon_icon_types: [:launcher, :notification],
        appicon_path: Dir.pwd + "#{placeHolderPath}/res/mipmap",
        generate_rounded: true,
      )
    end