private void TryNext()
        {
            if (loaders.Count > 0)
            {
                ProgressView pv = MonoObjectPool <ProgressView> .Instance.Get();

                ILoader loader = loaders.Dequeue();
                pv.SetName(loader.Name);
                pv.cancelBtn.onClick.AddListener(() => OnClickCancelBtn(loader.Name));
                pv.Register(loader.Progress);
                loader.StartAll();
                pv.Show(views.Count);
                LoaderView lv = new LoaderView(loader, pv);
                views.Add(lv);
            }
        }
        public void AddLoader(ILoader loader)
        {
            if (views.Count < showCount)
            {
                ProgressView v = MonoObjectPool <ProgressView> .Instance.Get();

                LoaderView lv = new LoaderView(loader, v);
                v.SetName(loader.Name);
                v.cancelBtn.onClick.AddListener(() => OnClickCancelBtn(loader.Name));
                v.Register(loader.Progress);
                loader.StartAll();
                v.Show(views.Count);
                views.Add(lv);
            }
            else
            {
                loaders.Enqueue(loader);
            }
        }