Unity运行时保存prefab的方法一则

using UnityEngine;
using UnityEditor;
using System.Collections;

static public class PrefabExtendTools
{

    [MenuItem("CONTEXT/Transform/SavePrefab")]
    static public void SavePrefab()
    {
        GameObject source = PrefabUtility.GetPrefabParent (Selection.activeGameObject) as GameObject;
        if(source == null) return;
        string prefabPath = AssetDatabase.GetAssetPath (source).ToLower ();
        if(prefabPath.EndsWith(".prefab") == false) return;
        PrefabUtility.ReplacePrefab (Selection.activeGameObject, source, ReplacePrefabOptions.ConnectToPrefab | ReplacePrefabOptions.ReplaceNameBased);
    }
}