using UnityEngine;
using System.Collections;

public class Gans : MonoBehaviour {

    
    public AnimationClip AC;
    public AnimationClip Ab;
    public GameObject go;
    public float time_1;
    bool flag;
   
    void Awake()
    {
        AC.legacy = true;
        Ab.legacy = true;
        time_1 = 5;
    }
    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Mouse0) & time_1 >=5)
        {
            go.GetComponent<Animation>().Play();
            time_1 = 0;
            flag = true;                    
        }
        if (flag == true)
        {
            time_1 += Time.deltaTime;
            if(time_1 >= 5)
            {
                flag = false;
            }
        }
    }
}

GameObject UILayer = GameObject.Find("UILayer");//Canvas
GameObject buttonObject = new GameObject();

buttonObject.transform.SetParent(UILayer.transform);

Button button = buttonObject.AddComponent<Button>();
Image image = buttonObject.AddComponent<Image>();

Texture txtr = Resources.Load("img") as Texture;
/*чего-то не хватает*/
button.image = image;

MyPrefab myPrefab = new MyPrefab()