Unityでfastlane androidのビルド対応する

手順

fastlaneのinstall

Gemfileを作成

Gemfile

source 'https://rubygems.org'

ruby '2.3.3'
gem 'fastlane'

bundler をinstall

$ gem install bundler

fastlaneをinstall

$ bundle install

fastlane の設定

$ bundle exec fastlane
... いろいろ答える

下記ファイルが出来る

• fastlane/Appfile
• fastlane/Fastfile

fastlaneにbuild laneを追加

unityでビルドを叩くレーンを記述

fastlane/Fastfile

platform :android
# 中略...
  desc "Build application"
  lane :build do
    CMD         = '/Applications/Unity/Unity.app/Contents/MacOS/Unity'
    LOGFILE     = '/tmp/unity.log'
    PROJECT_DIR = File.expand_path('..', Dir.pwd)

    begin
      sh "#{CMD} -quit -batchmode -buildTarget android -logfile #{LOGFILE} -executeMethod App.Builder.ExportAndroid -projectPath #{PROJECT_DIR}"
    rescue
      sh "cat #{LOGFILE}"
      raise 'Unity biuld failed'
    end
  end
# ...
end

Unityのbuildスクリプトを記述する

build laneから叩くビルドスクリプトを記述する.
keystoreなどの設定は適宜おこなう。

Assets/Editor/Builder.cs

using System.IO;
using System.Linq;
using System.Text;
using UnityEditor;
using UnityEngine;

namespace App
{
    public class Builder : MonoBehaviour
    {
        public static void ExportAndroid()
        {
            // KeyStore設定
            PlayerSettings.Android.keystoreName = "FIXME";
            PlayerSettings.Android.keystorePass = "FIXME";
            PlayerSettings.Android.keyaliasName = "FIXME";
            PlayerSettings.Android.keyaliasPass = "FIXME";

            // オプション設定
            EditorUserBuildSettings.exportAsGoogleAndroidProject = false;
            BuildOptions options = BuildOptions.Development;

            // 出力先
            var apkPath = string.Format("{0}-{1}.apk", PlayerSettings.bundleIdentifier, Application.version);

            Export(apkPath, BuildTarget.Android, options);
        }

        private static void Export(string path, BuildTarget target, BuildOptions options)
        {
            var error = BuildPipeline.BuildPlayer(GetAllScenes(), path, target, options);

            if (string.IsNullOrEmpty(error))
            {
                Debug.Log("Build Success");
            }
            else
            {
                Debug.Log("Build Failure: " + error);
                throw new Exception("Unity pipeline build failure: " + error);
            }
        }

        private static string[] GetAllScenes()
        {
            return EditorBuildSettings.scenes.Select(it => it.path).ToArray();
        }

        private static string ReadAll(string path)
        {
            FileInfo fileInfo = new FileInfo(path);
            using (StreamReader reader = new StreamReader(fileInfo.OpenRead(), Encoding.UTF8))
            {
                return reader.ReadToEnd();
            }
        }
    }
}

実行

$ bundle exec fastlane android build

これで <package_name>-<version>.apk が生成されているはず！