React Native – How to set build version for Android & iOS?

Install Fastlane

brew install fastlane

cd MyApp
mkdir fastlane && cd fastlane 
touch Fastfile
cd ..

Install Fastlane dependencies

• Install plugins handling version, version code on android

$ fastlane add_plugin increment_version_name increment_version_code
Should fastlane modify the Gemfile at path 'Gemfile' for you? (y/n) y

• Install plugin reading Json file (package.json)

fastlane load_json

• Copy this into Fastfile

desc 'Android: Increment versionCode and set versionName to package.json version.'
  package = load_json(json_path: "./package.json")

  private_lane :inc_ver_and do
    increment_version_code(
      gradle_file_path: "./android/app/build.gradle",
    )

    increment_version_name(
      gradle_file_path: "./android/app/build.gradle",
      version_name: package['version']
    )
  end


  desc 'iOS: Increment build number and set the version to package.json version.'
  private_lane :inc_ver_ios do
  package = load_json(json_path: "./package.json")

    increment_build_number(
      xcodeproj: './ios/' + package['name'] + '.xcodeproj'
    )
    increment_version_number(
      xcodeproj: './ios/' + package['name'] + '.xcodeproj',
      version_number: package['version']
    )
  end


  desc 'Bump build numbers, and set the version to match the pacakage.json version.'
  lane :bump do
    inc_ver_ios
    inc_ver_and
  end

• Add script into package.json file
  • “npm version patch –no-git-tag-version”: Upate JS package version without making a commit
  • “bundle exec fastlane bump”: Bump the android and iOS build numbers and update the version to match the JS side

{ 
  ...
  "scripts": {
    ...
    "bump-patch": "npm version patch --no-git-tag-version && bundle exec fastlane bump",
    "bump-minor": "npm version minor --no-git-tag-version && bundle exec fastlane bump",
    "bump-major": "npm version major --no-git-tag-version && bundle exec fastlane bump",
    ...
},

• Change “version” value in package.json and run

yarn bump-patch