Unity Build Script

BuildProject.cs

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

public class BuildProject : MonoBehaviour
{
	static string[] GetBuildScenes()
	{
		List<string> names = new List<string>();

		foreach (EditorBuildSettingsScene e in EditorBuildSettings.scenes) {
			if (e == null) {
				continue;
			}

			if (e.enabled) {
				names.Add(e.path);
			}
		}

		return names.ToArray();
	}

	[MenuItem("Build/Build iOS")]
	public static void Build_iOS()
	{
		BuildPlayerOptions buildPlayerOptions = new BuildPlayerOptions();
		buildPlayerOptions.scenes = GetBuildScenes();
		buildPlayerOptions.locationPathName = "Build/iOS";
		buildPlayerOptions.target = BuildTarget.iOS;
		buildPlayerOptions.options = BuildOptions.None;
		BuildPipeline.BuildPlayer(buildPlayerOptions);
	}

	[MenuItem("Build/Build Android")]
	public static void Build_Android()
	{
		BuildPlayerOptions buildPlayerOptions = new BuildPlayerOptions();
		buildPlayerOptions.scenes = GetBuildScenes();
		buildPlayerOptions.locationPathName = "Build/Android/Unity-Android.apk";
		buildPlayerOptions.target = BuildTarget.Android;
		buildPlayerOptions.options = BuildOptions.None;
		BuildPipeline.BuildPlayer(buildPlayerOptions);
	}

	[MenuItem("Build/Build Win32")]
	public static void Build_Win32()
	{
		BuildPlayerOptions buildPlayerOptions = new BuildPlayerOptions();
		buildPlayerOptions.scenes = GetBuildScenes();
		buildPlayerOptions.locationPathName = "Build/Win32/Unity-Win32.exe";
		buildPlayerOptions.target = BuildTarget.StandaloneWindows;
		buildPlayerOptions.options = BuildOptions.None;
		BuildPipeline.BuildPlayer(buildPlayerOptions);
	}
}