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React Native Fastlane deployment for Android

system prerequisites

Using RubyGems -> sudo gem install fastlane -NV

Alternatively using -> Homebrew brew cask install fastlane

Steps to generate json secret

  1. Open the Android fastlane

  2. Click the Settings menu entry, followed by API access

Android fastlane

  1. Click the CREATE SERVICE ACCOUNT button

Android fastlane

  1. Follow the Google Developers Console link in the dialog, which opens a new tab/window:

  2. Click the CREATE SERVICE ACCOUNT button at the top of the Google Developers Console

Android fastlane

  1. Provide a Service account name

Android fastlane

  1. Click Select a role and choose Service Accounts > Service Account User

Android fastlane

Android fastlane

  1. Check the Furnish a new private key checkbox

Android fastlane

  1. Make sure JSON is selected as the Key type

Android fastlane

Android fastlane

  1. Click SAVE to close the dialog

  2. Make a note of the file name of the JSON file downloaded to your computer

  3. Back on the Google Play Console, click DONE to close the dialog

  4. Click on Grant Access for the newly added service account

Android fastlane

  1. Choose Release Manager (or alternatively Project Lead) from the Role dropdown. (Note that choosing Release Manager grants access to the production track and all other tracks. Choosing Project Lead grants access to update all tracks except the production track.)

Android fastlane

  1. Click ADD USER to close the dialog

Setting up fastlane

Navigate your terminal to your project’s directory and run

Android fastlane

fastlane init

You’ll be asked to confirm that you’re ready to begin, and then for a few pieces of information. To get started quickly:

  1. Provide the package name for your application

  2. Press enter when asked for the path to your json secret file

  3. Answer ‘n’ when asked if you plan on uploading info to Google Play via fastlane (we can set this up later)

That’s it! fastlane will automatically generate a configuration for you based on the information provided.

You can see the newly created ./fastlane directory, with the following files:

  • Appfile which defines configuration information that is global to your app

  • Fastfile which defines the “lanes” that drive the behavior of fastlane


platform :android do

lane :beta do

path = '../app/build.gradle'

re = /versionCode\s+(\d+)/

s =

versionCode = s[re, 1].to_i

s[re, 1] = (versionCode + 1).to_s

f =, 'w')

releaseFilePath = File.join(Dir.pwd, "../app/", "YOUR_KEY_STORE_FILE_NAME")

gradle(task: 'clean')


task: 'bundle',

build_type: 'Release',

print_command: false,

properties: {
"" => releaseFilePath,


"android.injected.signing.key.alias" => "MY_KEY_ASIAS",

"android.injected.signing.key.password" => "SIGNING_PASSWORD",
track: 'internal'

Let’s Deploy

fastlane beta

React native awesome boilerplate Link

For more details visit fastlane