Unity的Image添加时raycastTarget默认为false

Unity的Image添加时raycastTarget很多时候是不需要监听其行为，默认为false

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[MenuItem("GameObject/UI/Image")]
	static void CreatImage()
	{
		if(Selection.activeTransform)
		{
			if(Selection.activeTransform.GetComponentInParent<Canvas>())
			{
				GameObject go = new GameObject("image",typeof(Image));
				go.GetComponent<Image>().raycastTarget = false;
				go.transform.SetParent(Selection.activeTransform);
			}
		}
	}