private async void DevicePicker_DeviceSelected(DevicePicker sender, DeviceSelectedEventArgs args)
{
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async() =>
{
// 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(Windows.UI.Core.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();
try
{
txtViewId.Text = $"{projectionInstance.ProjectionViewPageControl.Id}, {currentViewId}";
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;
}
}
});
}
private async void Picker_DeviceSelected(DevicePicker sender, DeviceSelectedEventArgs args)
{
string deviceId = args.SelectedDevice.Id;
//Casting must occur from the UI thread. This dispatches the casting calls to the UI thread.
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async() =>
{
//Update the display status for the selected device to connecting.
picker.SetDisplayStatus(args.SelectedDevice, "Connecting", DevicePickerDisplayStatusOptions.ShowProgress);
// BUG: In order to support debugging it is best to retreive the device from the local app instead
// of continuing to use the DeviceInformation instance that is proxied from the picker.
DeviceInformation device = null;
try { if (deviceId.IndexOf("dial", StringComparison.OrdinalIgnoreCase) == -1)
{
device = await DeviceInformation.CreateFromIdAsync(deviceId, RequiredDeviceProperties.Props, DeviceInformationKind.DeviceContainer);
}
} catch { }
try { if (device == null)
{
device = await DeviceInformation.CreateFromIdAsync(deviceId, RequiredDeviceProperties.Props, DeviceInformationKind.AssociationEndpoint);
}
} catch { }
// In case the workaround did not work
if (device == null)
{
device = args.SelectedDevice;
}
//Try casting using DIAL first
bool castSucceeded = await TryLaunchDialAppAsync(device);
//If DIAL did not work for the selected device, try the CAST API
if (!castSucceeded)
{
castSucceeded = await TryCastMediaElementAsync(device);
}
if (castSucceeded)
{
//Update the display status for the selected device.
try { picker.SetDisplayStatus(device, "Connected", DevicePickerDisplayStatusOptions.ShowDisconnectButton); } catch { }
disconnectButton.IsEnabled = true;
// Hide the picker now that all the work is completed
//picker.Hide();
}
else
{
//Show a retry button when connecting to the selected device failed.
picker.SetDisplayStatus(device, "Connecting failed", DevicePickerDisplayStatusOptions.ShowRetryButton);
}
});
}
private async void Picker_DeviceSelected(DevicePicker sender, DeviceSelectedEventArgs args)
{
string deviceId = args.SelectedDevice.Id;
//Casting must occur from the UI thread. This dispatches the casting calls to the UI thread.
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async() =>
{
//Update the display status for the selected device to connecting.
try { picker.SetDisplayStatus(args.SelectedDevice, "Connecting", DevicePickerDisplayStatusOptions.ShowProgress); } catch { }
//The selectedDeviceInfo instance is needed to be able to update the picker.
DeviceInformation selectedDeviceInfo = args.SelectedDevice;
#if DEBUG
// The args.SelectedCastingDevice is proxied from the picker process. The picker process is
// dismissmed as soon as you break into the debugger. Creating a non-proxied version
// allows debugging since the proxied version stops working once the picker is dismissed.
selectedDeviceInfo = await DeviceInformation.CreateFromIdAsync(args.SelectedDevice.Id);
#endif
bool castSucceeded = false;
// If the ProjectionManager API did not work and the device id will have 'dial' in it.
castSucceeded = await TryLaunchDialAppAsync(selectedDeviceInfo);
// If it doesn't try the ProjectionManager API.
if (!castSucceeded)
{
castSucceeded = await TryProjectionManagerCastAsync(selectedDeviceInfo);
}
//If DIAL and ProjectionManager did not work for the selected device, try the CAST API
if (!castSucceeded)
{
castSucceeded = await TryCastMediaElementAsync(selectedDeviceInfo);
}
if (castSucceeded)
{
//Update the display status for the selected device. Try Catch in case the picker is not visible anymore.
try { picker.SetDisplayStatus(selectedDeviceInfo, "Connected", DevicePickerDisplayStatusOptions.ShowDisconnectButton); } catch { }
// Hide the picker now that all the work is completed. Try Catch in case the picker is not visible anymore.
try { picker.Hide(); } catch { }
}
else
{
//Show a retry button when connecting to the selected device failed.
try { picker.SetDisplayStatus(selectedDeviceInfo, "Connecting failed", DevicePickerDisplayStatusOptions.ShowRetryButton); } catch { }
}
});
}
private async Task StopProjection(DevicePicker sender, DeviceInformation device)
{
// 關閉新建立的 view
projectionInstance.Content.StopProjection();
//Update the display status for the selected device.
sender.SetDisplayStatus(device, "Disconnecting", DevicePickerDisplayStatusOptions.ShowProgress);
//Update the display status for the selected device.
sender.SetDisplayStatus(device, "Disconnected", DevicePickerDisplayStatusOptions.None);
// Set the active device variables to null
activeDevice = null;
}
private async void Picker_DeviceSelected(DevicePicker sender, DeviceSelectedEventArgs args)
{
string deviceId = args.SelectedDevice.Id;
//Casting must occur from the UI thread. This dispatches the casting calls to the UI thread.
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async() =>
{
//Update the display status for the selected device to connecting.
picker.SetDisplayStatus(args.SelectedDevice, "Connecting", DevicePickerDisplayStatusOptions.ShowProgress);
// BUG: In order to support debugging it is best to retreive the device from the local app instead
// of continuing to use the DeviceInformation instance that is proxied from the picker.
DeviceInformation device = await DeviceInformation.CreateFromIdAsync(deviceId);
bool castSucceeded = false;
// The dial AssociationEndpoint ID will have 'dial' in the string.
// If it doesn't try the ProjectionManager API.
if (deviceId.IndexOf("dial", StringComparison.OrdinalIgnoreCase) == -1)
{
castSucceeded = await TryProjectionManagerCastAsync(device);
}
// If the ProjectionManager API did not work and the device id will have 'dial' in it.
if (!castSucceeded && deviceId.IndexOf("dial", StringComparison.OrdinalIgnoreCase) > -1)
{
castSucceeded = await TryLaunchDialAppAsync(device);
}
//If DIAL and ProjectionManager did not work for the selected device, try the CAST API
if (!castSucceeded)
{
castSucceeded = await TryCastMediaElementAsync(device);
}
if (castSucceeded)
{
//Update the display status for the selected device. Try Catch in case the picker is not visible anymore.
try { picker.SetDisplayStatus(device, "Connected", DevicePickerDisplayStatusOptions.ShowDisconnectButton); } catch { }
// Hide the picker now that all the work is completed. Try Catch in case the picker is not visible anymore.
try { picker.Hide(); } catch { }
}
else
{
//Show a retry button when connecting to the selected device failed.
try { picker.SetDisplayStatus(device, "Connecting failed", DevicePickerDisplayStatusOptions.ShowRetryButton); } catch { }
}
});
}
private void Picker_DeviceSelected(DevicePicker sender, DeviceSelectedEventArgs args)
{
// Getting the selected device
_selectedDeviceInformation = args.SelectedDevice;
// Save a setting locally on the device
ApplicationDataContainer localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
localSettings.Values[SelectedDeviceKey] = _selectedDeviceInformation.Id;
_onDeviceSelected(_selectedDeviceInformation.Id);
// Set status to Connecting
_picker.SetDisplayStatus(args.SelectedDevice, "", DevicePickerDisplayStatusOptions.None);
}
private async void DevicePicker_DisconnectButtonClicked(DevicePicker sender, DeviceDisconnectButtonClickedEventArgs args)
{
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
// 關閉新建立的 view
projectionInstance.Content.StopProjection();
//Update the display status for the selected device.
sender.SetDisplayStatus(args.Device, "Disconnecting", DevicePickerDisplayStatusOptions.ShowProgress);
//Update the display status for the selected device.
sender.SetDisplayStatus(args.Device, "Disconnected", DevicePickerDisplayStatusOptions.None);
// Set the active device variables to null
activeDevice = null;
});
}
private async void Picker_DisconnectButtonClicked(DevicePicker sender, DeviceDisconnectButtonClickedEventArgs args)
{
//Casting must occur from the UI thread. This dispatches the casting calls to the UI thread.
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async() =>
{
rootPage.NotifyUser("Disconnect Button clicked", NotifyType.StatusMessage);
//Update the display status for the selected device.
sender.SetDisplayStatus(args.Device, "Disconnecting", DevicePickerDisplayStatusOptions.ShowProgress);
bool disconnected = false;
if (this.activeCastConnectionHandler is ProjectionViewBroker)
{
disconnected = TryStopProjectionManagerAsync((ProjectionViewBroker)activeCastConnectionHandler);
}
if (this.activeCastConnectionHandler is DialApp)
{
disconnected = await TryStopDialAppAsync((DialApp)activeCastConnectionHandler);
}
if (this.activeCastConnectionHandler is CastingConnection)
{
disconnected = await TryDisconnectCastingSessionAsync((CastingConnection)activeCastConnectionHandler);
}
if (disconnected)
{
//Update the display status for the selected device.
try { sender.SetDisplayStatus(args.Device, "Disconnected", DevicePickerDisplayStatusOptions.None); } catch { }
// Set the active device variables to null
activeDevice = null;
activeCastConnectionHandler = null;
//Hide the picker
sender.Hide();
}
else
{
//Update the display status for the selected device.
sender.SetDisplayStatus(args.Device, "Disconnect failed", DevicePickerDisplayStatusOptions.ShowDisconnectButton);
}
});
}
private async Task StopDialConnection(DevicePicker picker, DeviceInformation device)
{
try
{
// 取得被選擇的 dial device
DialDevice selectedDialDevice = await DialDevice.FromIdAsync(device.Id);
// 更新 picker status
picker.SetDisplayStatus(device, "connecting", DevicePickerDisplayStatusOptions.ShowProgress);
// 取得 dial app
DialApp app = selectedDialDevice.GetDialApp("castingsample");
// 請求斷綫
DialAppStopResult result = await app.StopAsync();
if (result == DialAppStopResult.Stopped)
{
picker.SetDisplayStatus(device, "Disconnected", DevicePickerDisplayStatusOptions.None);
activeDevice = null;
picker.Hide();
}
else
{
if (result == DialAppStopResult.StopFailed || result == DialAppStopResult.NetworkFailure)
{
// 如果失敗的話要記得多 retry 的機制
picker.SetDisplayStatus(device, "Error", DevicePickerDisplayStatusOptions.ShowDisconnectButton);
}
else
{
// 如果設備沒有支援 Stop 機制，則直接清楚連綫就好
activeDevice = null;
}
}
}
catch (Exception ex)
{
}
}
private async Task SendDialParameter(DevicePicker sender, DeviceSelectedEventArgs args)
{
try
{
// 設定遠端設備現在要準備連綫
sender.SetDisplayStatus(args.SelectedDevice, "connecting", DevicePickerDisplayStatusOptions.ShowProgress);
// 取得遠端設備中支援指定 app name 的 App
DialDevice dialDevice = await DialDevice.FromIdAsync(args.SelectedDevice.Id);
DialApp app = dialDevice.GetDialApp("castingsample");
if (app == null)
{
// 嘗試建立 DIAL device，如果失敗代表那個設備不支援 DIAL
sender.SetDisplayStatus(args.SelectedDevice, "The app is not exist in the device.", DevicePickerDisplayStatusOptions.ShowRetryButton);
}
else
{
// 請求送出參數到遠端設備的 App
DialAppLaunchResult result = await app.RequestLaunchAsync("Test");
if (result == DialAppLaunchResult.Launched)
{
activeDevice = args.SelectedDevice;
sender.SetDisplayStatus(args.SelectedDevice, "connected", DevicePickerDisplayStatusOptions.ShowDisconnectButton);
sender.Hide();
}
else
{
sender.SetDisplayStatus(args.SelectedDevice, "Device Error", DevicePickerDisplayStatusOptions.ShowRetryButton);
}
}
}
catch (Exception ex)
{
sender.SetDisplayStatus(args.SelectedDevice, ex.Message, DevicePickerDisplayStatusOptions.None);
}
}
private async void Picker_DisconnectButtonClicked(DevicePicker sender, DeviceDisconnectButtonClickedEventArgs args)
{
//Casting must occur from the UI thread. This dispatches the casting calls to the UI thread.
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
rootPage.NotifyUser("Disconnect Button clicked", NotifyType.StatusMessage);
//Update the display status for the selected device.
sender.SetDisplayStatus(args.Device, "Disconnecting", DevicePickerDisplayStatusOptions.ShowProgress);
if (this.pvb.ProjectedPage != null)
{
this.pvb.ProjectedPage.StopProjecting();
}
//Update the display status for the selected device.
sender.SetDisplayStatus(args.Device, "Disconnected", DevicePickerDisplayStatusOptions.None);
rootPage.NotifyUser("Disconnected", NotifyType.StatusMessage);
// Set the active device variables to null
activeDevice = null;
});
}
private async Task StopProjection(DevicePicker sender, DeviceInformation device)
{
// 關閉新建立的 view
projectionInstance.Content.StopProjection();
//Update the display status for the selected device.
sender.SetDisplayStatus(device, "Disconnecting", DevicePickerDisplayStatusOptions.ShowProgress);
//Update the display status for the selected device.
sender.SetDisplayStatus(device, "Disconnected", DevicePickerDisplayStatusOptions.None);
// Set the active device variables to null
activeDevice = null;
}
private async void Picker_DeviceSelected(DevicePicker sender, DeviceSelectedEventArgs args)
{
//Casting must occur from the UI thread. This dispatches the casting calls to the UI thread.
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async() =>
{
try
{
// Set status to Connecting
picker.SetDisplayStatus(args.SelectedDevice, "Connecting", DevicePickerDisplayStatusOptions.ShowProgress);
// Getting the selected device improves debugging
DeviceInformation selectedDevice = args.SelectedDevice;
thisViewId = Windows.UI.ViewManagement.ApplicationView.GetForCurrentView().Id;
// If projection is already in progress, then it could be shown on the monitor again
// Otherwise, we need to create a new view to show the presentation
if (rootPage.ProjectionViewPageControl == null)
{
// First, create a new, blank view
var thisDispatcher = Window.Current.Dispatcher;
await CoreApplication.CreateNewView().Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
// ViewLifetimeControl is a wrapper to make sure the view is closed only
// when the app is done with it
rootPage.ProjectionViewPageControl = ViewLifetimeControl.CreateForCurrentView();
// Assemble some data necessary for the new page
pvb.MainPageDispatcher = thisDispatcher;
pvb.ProjectionViewPageControl = rootPage.ProjectionViewPageControl;
pvb.MainViewId = thisViewId;
// Display the page in the view. Note that the view will not become visible
// until "StartProjectingAsync" is called
var rootFrame = new Frame();
rootFrame.Navigate(typeof(ProjectionViewPage), pvb);
Window.Current.Content = rootFrame;
Window.Current.Activate();
});
}
try
{
// Start/StopViewInUse are used to signal that the app is interacting with the
// view, so it shouldn't be closed yet, even if the user loses access to it
rootPage.ProjectionViewPageControl.StartViewInUse();
try
{
await ProjectionManager.StartProjectingAsync(rootPage.ProjectionViewPageControl.Id, thisViewId, selectedDevice);
}
catch (Exception ex)
{
if (!ProjectionManager.ProjectionDisplayAvailable || pvb.ProjectedPage == null)
{
throw ex;
}
}
// ProjectionManager currently can throw an exception even when projection has started.\
// Re-throw the exception when projection has not been started after calling StartProjectingAsync
if (ProjectionManager.ProjectionDisplayAvailable && pvb.ProjectedPage != null)
{
this.player.Pause();
await pvb.ProjectedPage.SetMediaSource(this.player.Source, this.player.Position);
activeDevice = selectedDevice;
// Set status to Connected
picker.SetDisplayStatus(args.SelectedDevice, "Connected", DevicePickerDisplayStatusOptions.ShowDisconnectButton);
picker.Hide();
}
else
{
rootPage.NotifyUser(string.Format("Projection has failed to '{0}'", selectedDevice.Name), NotifyType.ErrorMessage);
// Set status to Failed
picker.SetDisplayStatus(args.SelectedDevice, "Connection Failed", DevicePickerDisplayStatusOptions.ShowRetryButton);
}
}
catch (Exception)
{
rootPage.NotifyUser(string.Format("Projection has failed to '{0}'", selectedDevice.Name), NotifyType.ErrorMessage);
// Set status to Failed
try { picker.SetDisplayStatus(args.SelectedDevice, "Connection Failed", DevicePickerDisplayStatusOptions.ShowRetryButton); } catch { }
}
}
catch (Exception ex)
{
UnhandledExceptionPage.ShowUnhandledException(ex);
}
});
}
private async void Picker_DisconnectButtonClicked(DevicePicker sender, DeviceDisconnectButtonClickedEventArgs args)
{
//Casting must occur from the UI thread. This dispatches the casting calls to the UI thread.
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async () =>
{
rootPage.NotifyUser("Disconnect Button clicked", NotifyType.StatusMessage);
//Update the display status for the selected device.
sender.SetDisplayStatus(args.Device, "Disconnecting", DevicePickerDisplayStatusOptions.ShowProgress);
bool disconnected = false;
if (this.activeCastConnectionHandler is ProjectionViewBroker)
disconnected = TryStopProjectionManagerAsync((ProjectionViewBroker)activeCastConnectionHandler);
if (this.activeCastConnectionHandler is DialApp)
disconnected = await TryStopDialAppAsync((DialApp)activeCastConnectionHandler);
if (this.activeCastConnectionHandler is CastingConnection)
disconnected = await TryDisconnectCastingSessionAsync((CastingConnection)activeCastConnectionHandler);
if (disconnected)
{
//Update the display status for the selected device.
try { sender.SetDisplayStatus(args.Device, "Disconnected", DevicePickerDisplayStatusOptions.None); } catch { }
// Set the active device variables to null
activeDevice = null;
activeCastConnectionHandler = null;
//Hide the picker
sender.Hide();
}
else
{
//Update the display status for the selected device.
sender.SetDisplayStatus(args.Device, "Disconnect failed", DevicePickerDisplayStatusOptions.ShowDisconnectButton);
}
});
}
private async void Picker_DisconnectButtonClicked(DevicePicker sender, DeviceDisconnectButtonClickedEventArgs args)
{
//Casting must occur from the UI thread. This dispatches the casting calls to the UI thread.
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
rootPage.NotifyUser("Disconnect Button clicked", NotifyType.StatusMessage);
//Update the display status for the selected device.
sender.SetDisplayStatus(args.Device, "Disconnecting", DevicePickerDisplayStatusOptions.ShowProgress);
if (this.pvb.ProjectedPage != null)
this.pvb.ProjectedPage.StopProjecting();
//Update the display status for the selected device.
sender.SetDisplayStatus(args.Device, "Disconnected", DevicePickerDisplayStatusOptions.None);
rootPage.NotifyUser("Disconnected", NotifyType.StatusMessage);
// Set the active device variables to null
activeDevice = null;
});
}
private async void DevicePicker_DisconnectButtonClicked(DevicePicker sender, DeviceDisconnectButtonClickedEventArgs args)
{
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
// 關閉新建立的 view
projectionInstance.Content.StopProjection();
//Update the display status for the selected device.
sender.SetDisplayStatus(args.Device, "Disconnecting", DevicePickerDisplayStatusOptions.ShowProgress);
//Update the display status for the selected device.
sender.SetDisplayStatus(args.Device, "Disconnected", DevicePickerDisplayStatusOptions.None);
// Set the active device variables to null
activeDevice = null;
});
}
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;
}
}
}
private async Task StopDialConnection(DevicePicker picker, DeviceInformation device)
{
try
{
// 取得被選擇的 dial device
DialDevice selectedDialDevice = await DialDevice.FromIdAsync(device.Id);
// 更新 picker status
picker.SetDisplayStatus(device, "connecting", DevicePickerDisplayStatusOptions.ShowProgress);
// 取得 dial app
DialApp app = selectedDialDevice.GetDialApp("castingsample");
// 請求斷綫
DialAppStopResult result = await app.StopAsync();
if (result == DialAppStopResult.Stopped)
{
picker.SetDisplayStatus(device, "Disconnected", DevicePickerDisplayStatusOptions.None);
activeDevice = null;
picker.Hide();
}
else
{
if (result == DialAppStopResult.StopFailed || result == DialAppStopResult.NetworkFailure)
{
// 如果失敗的話要記得多 retry 的機制
picker.SetDisplayStatus(device, "Error", DevicePickerDisplayStatusOptions.ShowDisconnectButton);
}
else
{
// 如果設備沒有支援 Stop 機制，則直接清楚連綫就好
activeDevice = null;
}
}
}
catch (Exception ex)
{
}
}
private async Task SendDialParameter(DevicePicker sender, DeviceSelectedEventArgs args)
{
try
{
// 設定遠端設備現在要準備連綫
sender.SetDisplayStatus(args.SelectedDevice, "connecting", DevicePickerDisplayStatusOptions.ShowProgress);
// 取得遠端設備中支援指定 app name 的 App
DialDevice dialDevice = await DialDevice.FromIdAsync(args.SelectedDevice.Id);
DialApp app = dialDevice.GetDialApp("castingsample");
if (app == null)
{
// 嘗試建立 DIAL device，如果失敗代表那個設備不支援 DIAL
sender.SetDisplayStatus(args.SelectedDevice, "The app is not exist in the device.", DevicePickerDisplayStatusOptions.ShowRetryButton);
}
else
{
// 請求送出參數到遠端設備的 App
DialAppLaunchResult result = await app.RequestLaunchAsync("Test");
if (result == DialAppLaunchResult.Launched)
{
activeDevice = args.SelectedDevice;
sender.SetDisplayStatus(args.SelectedDevice, "connected", DevicePickerDisplayStatusOptions.ShowDisconnectButton);
sender.Hide();
}
else
{
sender.SetDisplayStatus(args.SelectedDevice, "Device Error", DevicePickerDisplayStatusOptions.ShowRetryButton);
}
}
}
catch (Exception ex)
{
sender.SetDisplayStatus(args.SelectedDevice, ex.Message, DevicePickerDisplayStatusOptions.None);
}
}
