MRClass/Assets/ShadowCreator/SVR/Editor/SvrBuild.cs

using UnityEngine;
using UnityEditor;
using System.IO;
using System.Collections.Generic;
using System.Text.RegularExpressions;

public class SvrBuild : MonoBehaviour
{
    static void BuildScene(string[] scenes, string apkDir, string apkName)
    {
        Directory.CreateDirectory(apkDir);

        if(System.IO.File.Exists(apkDir + apkName))
        {
            System.IO.File.SetAttributes(apkDir + apkName, System.IO.File.GetAttributes(apkDir + apkName) & ~FileAttributes.ReadOnly);
        }

        BuildPipeline.BuildPlayer(scenes, apkDir + apkName, BuildTarget.Android, BuildOptions.None);
    }
    //
    [MenuItem("SVR/Build Project/Landscape Left")]
    static void BuildProjectLL()
    {
        BuildProjectTarget(UIOrientation.LandscapeLeft, "-ll.apk");
    }

    [MenuItem("SVR/Build Project/Landscape Right")]
    static void BuildProjectLR()
    {
        BuildProjectTarget(UIOrientation.LandscapeRight, "-lr.apk");
    }

    [MenuItem("SVR/Build Project/Landscape All")]
    static void BuildProject()
    {
        BuildProjectTarget(UIOrientation.LandscapeLeft, "-ll.apk");
        BuildProjectTarget(UIOrientation.LandscapeRight, "-lr.apk");
    }

    static void BuildProjectTarget(UIOrientation landscapeOrientation, string landscapeSuffix)
	{
		try
		{

#           if UNITY_2018
                PlayerSettings.Android.targetSdkVersion = AndroidSdkVersions.AndroidApiLevelAuto;
                PlayerSettings.Android.targetArchitectures = AndroidArchitecture.All;   // ARM64
                PlayerSettings.SetScriptingBackend(BuildTargetGroup.Android, ScriptingImplementation.IL2CPP);
#           elif UNITY_2017
                PlayerSettings.Android.targetSdkVersion = AndroidSdkVersions.AndroidApiLevel25;
#           else // UNITY_5
#           endif
            Debug.Log("Bulding Project!");
#           if UNITY_5
                EditorUserBuildSettings.SwitchActiveBuildTarget(BuildTarget.Android);
#           else
                EditorUserBuildSettings.SwitchActiveBuildTarget(BuildTargetGroup.Android, BuildTarget.Android);
#           endif

            {
                string apkDir = "./Build/Android/";
                string apkName = PlayerSettings.productName.Replace(" ", "_");   

				List<string> scenes = new List<string>();
				if( EditorBuildSettings.scenes != null )
				{
					for(int i=0;i<EditorBuildSettings.scenes.Length;i++)
					{
						if( EditorBuildSettings.scenes[i].enabled )
						{
							scenes.Add(EditorBuildSettings.scenes[i].path);
						}
					}
				}

                //Save off current orientation
                UIOrientation currentOrientation = PlayerSettings.defaultInterfaceOrientation;
                
                //Build target
                PlayerSettings.defaultInterfaceOrientation = landscapeOrientation;
                BuildScene(scenes.ToArray(), apkDir, apkName+landscapeSuffix);

                //revert back
                PlayerSettings.defaultInterfaceOrientation = currentOrientation;
            }
        }
		catch (IOException e)
		{
			Debug.LogError( e.Message );
		}
	}
}