GHZMRNavigatorProXR/Assets/HotUpdate/UserBaseUI.cs

using UnityEngine;

public abstract class UserBaseUI<T> : MonoBehaviour where T : MonoBehaviour
{
    private static T instance;

    private static object lockObj = new object();

    public static T Instance
    {
        get
        {
            if (instance == null)
            {
                instance = (T)FindObjectOfType(typeof(T));

                if (instance == null)
                {
                    lock (lockObj)
                    {
                        if (instance == null)
                        {
                            GameObject singleton = new GameObject();
                            instance = singleton.AddComponent<T>();
                            singleton.name = "(Singleton) " + typeof(T).Name;
                            DontDestroyOnLoad(singleton);
                        }
                    }
                }
            }
            return instance;
        }
    }
    
    // Start is called before the first frame update
    public virtual void Awake()
    {
        this.transform.parent = GameScene.Instance.transform;
        this.transform.localPosition = Vector3.zero;
        this.transform.localEulerAngles = Vector3.zero;
        this.transform.localScale = Vector3.one;
        GameScene.Instance.UIList.Add(Instance.gameObject);
        this.gameObject.SetActive(false);
    }


    public virtual void show()
    {
        int ct =GameScene.Instance.UIList.Count;
        for (int i = 0; i < ct; i++)
        {
            GameScene.Instance.UIList[i].gameObject.SetActive(false);
        }
        this.gameObject.SetActive(true);
    }


    public virtual void hide()
    {

    }
}