GHZMRSupport/Assets/SDK/Modules/Module_SplashImage/Editor/SplashUtils.cs

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

public class SplashUtils
{
    [MenuItem("SDK/SetSplashImage")]
    public static void SetSplashImage()
    {
        PlayerSettings.SplashScreen.show = true;
        PlayerSettings.SplashScreen.backgroundColor = Color.black;

        PlayerSettings.SplashScreenLogo[] logos = PlayerSettings.SplashScreen.logos;


        var logo = new PlayerSettings.SplashScreenLogo();
        string splashAssetPath = AssetDatabase.GUIDToAssetPath(AssetDatabase.FindAssets("SplashImg")[0]);
        logo.duration = 2f;
        logo.logo = AssetDatabase.LoadAssetAtPath<Sprite>(splashAssetPath);

        if (logos == null)
        {
            logos = new PlayerSettings.SplashScreenLogo[] { logo };
        }
        else
        {
            List<PlayerSettings.SplashScreenLogo> logoList = new List<PlayerSettings.SplashScreenLogo>(logos);
            logoList.Add(logo);
            logos = logoList.ToArray();
        }

        PlayerSettings.SplashScreen.logos = logos;
    }
}