private void OnDestroy()
    {
        BtnPromptController controller = GameObject.Find("UILayer").GetComponentInChildren <BtnPromptController>(true);

        if (controller)
        {
            GameObject.Find("UILayer").GetComponentInChildren <BtnPromptController>(true).SwitchPromptFrom(0);
        }
    }
 // Use this for initialization
 void Start()
 {
     btnPromptCtrl = GetComponentInChildren <BtnPromptController>(true);
     cameraMgr     = GameObject.Find("EverySceneNeed").GetComponent <CameraManager>();
     // btnSettingCtrl = GetComponentInChildren<BtnSettingController>(true);
 }
 // Use this for initialization
 void Start()
 {
     promptController = GameObject.Find("UILayer").GetComponentInChildren <BtnPromptController>(true);
 }