public override UIViewController GetNextViewController(UIPageViewController pageViewController, UIViewController referenceViewController)
{
var vc = referenceViewController as PointsBaseViewController;
var index = vc.PageIndex;
//CurrentIndex = vc.PageIndex;
if (CurrentIndex == -1)
{
CurrentIndex = 0;
}
else
{
CurrentIndex = vc.PageIndex;
}
index++;
//if (index > (PageCount - 1))
// index = 0;
if (SelectedIndex != -1)
{
CurrentIndex = index = SelectedIndex;
}
ChangePage?.Invoke(CurrentIndex, null);
if (index > (PageCount - 1))
{
index = PageCount - 1;
return(null);
}
return(_parentViewController.ViewControllerAtIndex(index));
}
/// <summary>
/// 切換頁數
/// </summary>
/// <param name="CurrentPage"></param>
private void SetCurrentPage(int CurrentPage, bool isNotify = true)
{
//先隱藏按鍵，等設定完狀態後在顯示，為了防止畫面閃爍用的;//
btnArrowFirst.Visible = false;
btnArrowLeft.Visible = false;
btnArrowRight.Visible = false;
btnArrowLast.Visible = false;
if (m_TotalPage == 1)
{
m_CurrentPage = 1;
btnArrowFirst.Enabled = false;
btnArrowLeft.Enabled = false;
btnArrowRight.Enabled = false;
btnArrowLast.Enabled = false;
}
else if (CurrentPage >= m_TotalPage)
{
//表示切換至最後一頁;//
m_CurrentPage = m_TotalPage;
//關閉最後一頁及下一頁按鈕;//
btnArrowFirst.Enabled = true;
btnArrowLeft.Enabled = true;
btnArrowRight.Enabled = false;
btnArrowLast.Enabled = false;
}
else if (CurrentPage <= 1)
{
//表示切換至第一頁;//
m_CurrentPage = 1;
//關閉第一頁及前一頁按鈕;//
btnArrowFirst.Enabled = false;
btnArrowLeft.Enabled = false;
btnArrowRight.Enabled = true;
btnArrowLast.Enabled = true;
}
else
{
//表示切換到中間的頁數;//
m_CurrentPage = CurrentPage;
btnArrowFirst.Enabled = true;
btnArrowLeft.Enabled = true;
btnArrowRight.Enabled = true;
btnArrowLast.Enabled = true;
}
//切換頁數通知;//
if (isNotify == true)
{
ChangePage?.Invoke(m_CurrentPage);
}
//顯示現在的頁數;//
tbCurrentPage.Text = m_CurrentPage.ToString();
//按鍵設定完狀態後顯示，為了防止畫面閃爍用的;//
btnArrowFirst.Visible = true;
btnArrowLeft.Visible = true;
btnArrowRight.Visible = true;
btnArrowLast.Visible = true;
}