场景中预置资源的创建和替换

王者再临

[MenuItem("Build/SetLaunchVersionTime", false, 0)]
public static void DoTime()
{
        string path = EditorBuildSettings.scenes [0].path;
        EditorApplication.OpenScene(path);

     GameObject appObj = GameObject.Find("AppLaunch");
       if (appObj == null)
     {
          UnityEngine.Debug.LogError("not find LaunchVersion");
          return;
   }

    var bv = appObj.GetComponent<LaunchVersion>();
    bv.BuildTime = DateTime.Now.ToString("yyyyMMdd_HHmmss");

    UnityEngine.Object Prefab = AssetDatabase.LoadMainAssetAtPath(AssetDatabase.GetAssetPath(appObj));
    if (Prefab != null)
        PrefabUtility.ReplacePrefab(appObj, Prefab, ReplacePrefabOptions.ConnectToPrefab);
    else
          PrefabUtility.CreatePrefab("新路径",  appObj,  ReplacePrefabOptions.ConnectToPrefab);

        EditorApplication.SaveScene();
    }