private async Task ProjectioinViewToScreen(DevicePicker sender, DeviceSelectedEventArgs args)
{
// 更新 picker 上設備的 status
sender.SetDisplayStatus(args.SelectedDevice, "Connecting", DevicePickerDisplayStatusOptions.ShowProgress);
// 取得目前選到設備的資訊
activeDevice = args.SelectedDevice;
// 現在 view 的 Id 與 CoreDispatcher
int currentViewId = ApplicationView.GetForCurrentView().Id;
CoreDispatcher currentDispatcher = Window.Current.Dispatcher;
// 建立新的 view,
if (projectionInstance.ProjectionViewPageControl == null)
{
await CoreApplication.CreateNewView().Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
// 建立新 viewe 的生命管理器
projectionInstance.ProjectionViewPageControl = ViewLifetimeControl.CreateForCurrentView();
projectionInstance.MainViewId = currentViewId;
var rootFrame = new Frame();
rootFrame.Navigate(typeof(ProjectionPage), projectionInstance);
// 這裏的 Window 代表是新建立這個 view 的 Window
// 但是要等到呼叫 ProjectionManager.StartProjectingAsync 才會顯示
Window.Current.Content = rootFrame;
Window.Current.Activate();
});
}
// 直接切換到指定的 view id
//bool viewShown = await ApplicationViewSwitcher.TryShowAsStandaloneAsync(projectionInstance.ProjectionViewPageControl.Id);
// 通知要使用新的 view
projectionInstance.ProjectionViewPageControl.StartViewInUse();
await ProjectionManager.SwapDisplaysForViewsAsync(projectionInstance.ProjectionViewPageControl.Id, currentViewId);
try
{
await ProjectionManager.StartProjectingAsync(projectionInstance.ProjectionViewPageControl.Id, currentViewId, activeDevice);
player.Pause();
sender.SetDisplayStatus(args.SelectedDevice, "connected", DevicePickerDisplayStatusOptions.ShowDisconnectButton);
}
catch (Exception ex)
{
sender.SetDisplayStatus(args.SelectedDevice, ex.Message, DevicePickerDisplayStatusOptions.ShowRetryButton);
if (ProjectionManager.ProjectionDisplayAvailable == false)
{
throw;
}
}
}
public async void SwapViews()
{
// The view might arrive on the wrong display. The user can
// easily swap the display on which the view appears
broker.ProjectionViewPageControl.StartViewInUse();
await ProjectionManager.SwapDisplaysForViewsAsync(
ApplicationView.GetForCurrentView().Id,
broker.MainViewId
);
broker.ProjectionViewPageControl.StopViewInUse();
}
private async void SwapViews_Click(object sender, RoutedEventArgs e)
{
// The view might arrive on the wrong display. The user can
// easily swap the display on which the view appears
thisViewControl.StartViewInUse();
await ProjectionManager.SwapDisplaysForViewsAsync(
ApplicationView.GetForCurrentView().Id,
mainViewId
);
thisViewControl.StopViewInUse();
}
public ProjectionViewPage()
{
this.InitializeComponent();
Loaded += async(s, e) =>
{
thisViewControl.StartViewInUse();
await ProjectionManager.SwapDisplaysForViewsAsync(secondViewId, mainViewId);
thisViewControl.StopViewInUse();
};
}
public async Task SwapProjection()
{
try
{
if (projecting)
{
await ProjectionManager.SwapDisplaysForViewsAsync(externalViewId, ApplicationView.GetForCurrentView().Id);
}
}
catch (Exception ex)
{
Debug.WriteLine("SwapProjection: " + ex.Message);
}
}
public async Task SwapProjection(int mainViewId)
{
await ProjectionManager.SwapDisplaysForViewsAsync(
ApplicationView.GetForCurrentView().Id,
mainViewId);
}