public ViewListImagePage(ViewListImagePageInfo info)
        {
            InitializeComponent();

            m_info = info;

            InitCollView();

            SetCollViewColumn(info.ViewColumn);

            Start();
        }
        private void OnStartViewImag(object sender, EventArgs e)
        {
            if (SetInit())
            {
                var info = new ViewListImagePageInfo(InputData.ViewColumn, m_info.LoadBigImg);

                info.Task.ContinueWith((t) => MainThread.BeginInvokeOnMainThread(() => Init()));

                Navigation.PushModalAsync(new ViewListImagePage(info));
            }
            else
            {
                DisplayAlert("错误", "参数问题", "确定");
            }
        }