WP8方向更改动画

Question

向我的Windows Phone 8应用程序添加方向更改动画最简单的方法是什么？我对消息，日历等原生应用程序感兴趣。我正在寻找一个快速简单的解决方案，我发现的唯一工作是NuGet中的DynamicOrientionChanges库，但它在Windows上的帧率有一个很大的问题电话8.

Answer 1

您可以使用Windows.Phone.Toolkit和处理OrientationChangedEvent，为展示位置：

http://mobileworld.appamundi.com/blogs/andywigley/archive/2010/11/23/windows-phone-7-page-orientation-change-animations.aspx

我会在这里复制链接的文章的源代码的一部分，只是在案件页面脱机。它包含额外的逻辑来跟踪当前人来自哪个方向，以便动画匹配更改：

public partial class MainPage : PhoneApplicationPage 
{ 
    PageOrientation lastOrientation; 

    // Constructor 
    public MainPage() 
    { 
     InitializeComponent(); 

     this.OrientationChanged += new EventHandler<OrientationChangedEventArgs>(MainPage_OrientationChanged); 

     lastOrientation = this.Orientation; 
    } 

    void MainPage_OrientationChanged(object sender, OrientationChangedEventArgs e) 
    { 
     PageOrientation newOrientation = e.Orientation; 
     Debug.WriteLine("New orientation: " + newOrientation.ToString()); 

     // Orientations are (clockwise) 'PortraitUp', 'LandscapeRight', 'LandscapeLeft' 

     RotateTransition transitionElement = new RotateTransition(); 

     switch (newOrientation) 
     { 
      case PageOrientation.Landscape: 
      case PageOrientation.LandscapeRight: 
       // Come here from PortraitUp (i.e. clockwise) or LandscapeLeft? 
       if (lastOrientation == PageOrientation.PortraitUp) 
        transitionElement.Mode = RotateTransitionMode.In90Counterclockwise; 
       else 
        transitionElement.Mode = RotateTransitionMode.In180Clockwise; 
       break; 
      case PageOrientation.LandscapeLeft: 
       // Come here from LandscapeRight or PortraitUp? 
       if (lastOrientation == PageOrientation.LandscapeRight) 
        transitionElement.Mode = RotateTransitionMode.In180Counterclockwise; 
       else 
        transitionElement.Mode = RotateTransitionMode.In90Clockwise; 
       break; 
      case PageOrientation.Portrait: 
      case PageOrientation.PortraitUp: 
       // Come here from LandscapeLeft or LandscapeRight? 
       if (lastOrientation == PageOrientation.LandscapeLeft) 
        transitionElement.Mode = RotateTransitionMode.In90Counterclockwise; 
       else 
        transitionElement.Mode = RotateTransitionMode.In90Clockwise; 
       break; 
      default: 
       break; 
     } 

     // Execute the transition 
     PhoneApplicationPage phoneApplicationPage = (PhoneApplicationPage)(((PhoneApplicationFrame)Application.Current.RootVisual)).Content; 
     ITransition transition = transitionElement.GetTransition(phoneApplicationPage); 
     transition.Completed += delegate 
     { 
      transition.Stop(); 
     }; 
     transition.Begin(); 

     lastOrientation = newOrientation; 
    } 
}