UnityUICounts.cs

using UnityEngine;
using System.Collections;

[ExecuteInEditMode]
public class UnityUICounts : MonoBehaviour {
	public int TotalRectTransforms = 0;
	public int ImageObjectCount = 0;
	public int TextObjectCount = 0;
	public int ButtonObjectCount = 0;

#if UNITY_EDITOR
	void Update () {
		ImageObjectCount = GetComponentsInChildren<UnityEngine.UI.Image>( true ).Length;
		TextObjectCount = GetComponentsInChildren<UnityEngine.UI.Text>( true ).Length;
		ButtonObjectCount = GetComponentsInChildren<UnityEngine.UI.Button>( true ).Length;
		TotalRectTransforms = GetComponentsInChildren<RectTransform>( true ).Length;
	}
#endif
}