如何顺畅地导航到不同的全景项目

Question

在全景应用中，我已经添加了一些情况，用户会被导航回到某个全景项目。然而，这是通过一个突然的动作完成的。有没有办法可以更平滑地执行这个动作，使用一些过渡效果或类似的东西呢？

- Newbie

Answer 1

这段代码对我有用。

SlideTransition slideTransition = new SlideTransition();
slideTransition.Mode = SlideTransitionMode.SlideRightFadeIn;
ITransition transition = slideTransition.GetTransition(panorama_main);
transition.Completed += delegate
{
    transition.Stop();
};
PanoramaItem pItem = (PanoramaItem)panorama_main.Items[3];
panorama_main.DefaultItem = pItem; 
transition.Begin();

- Inder Kumar Rathore

---

有点晚了，但出于兴趣，您如何在XAML中定义这些“SlideTransition”？ - Newbie

Answer 2

从Inder Kumar Rathore的回答和这个页面上的其他回答中，我已经得出了以下结论：

    #region navigation
    public enum MainPanoramaItem
    {
        None = -1, Mag, Scan, Account, Lists, More, Help, MainPanoramaItemCount
    }
    public void PanoramaNavigateTo(MainPanoramaItemitem)
    {
        int count = (int)MainPanoramaItem.MainPanoramaItemCount;
        int toPosition = (int)item;
        int nowPosition = panorama.SelectedIndex;
        bool left = false;
        if(nowPosition > toPosition){
            int rightDelta = count - nowPosition + toPosition;
            int leftDelta = nowPosition - toPosition;
            left = rightDelta > leftDelta;
        } else {
            int leftDelta = count - nowPosition + toPosition;
            int rightDelta = nowPosition - toPosition;
            left = rightDelta > leftDelta;
        }

        SlideTransition slideTransition = new SlideTransition();
        slideTransition.Mode = left ? SlideTransitionMode.SlideLeftFadeOut : SlideTransitionMode.SlideRightFadeOut;
        ITransition transition = slideTransition.GetTransition(panorama);
        transition.Completed += delegate
        {
            transition.Stop();
            SlideTransition slideTransitionIn = new SlideTransition();
            slideTransitionIn.Mode = left ? SlideTransitionMode.SlideLeftFadeIn : SlideTransitionMode.SlideRightFadeIn;
            ITransition transitionIn = slideTransitionIn.GetTransition(panorama);
            transitionIn.Completed += delegate { transitionIn.Stop(); };

            panorama.SetValue(Panorama.SelectedItemProperty, panorama.Items[(int)item]);
            Panorama temp = panorama;
            LayoutRoot.Children.Remove(panorama);
            LayoutRoot.Children.Add(temp);
            LayoutRoot.UpdateLayout();

            transitionIn.Begin();
        };
        transition.Begin();
    }

    protected override void OnBackKeyPress(CancelEventArgs e)
    {
        if (panorama.DefaultItem != panorama.Items[(int)PanoramaItem.Mag])
        {
            PanoramaNavigateTo(PanoramaItem.Mag);
            e.Cancel = true;
        }
    }
    #endregion

在MainPage.xaml.cs中，它使用淡出然后淡入，并保持全景图的标题在原位。由于我的应用程序相当空，我还不确定它如何与真实应用程序交互。

- Rivenfall