/// <summary>
/// Invoked when the application is launched normally by the end user. Other entry points
/// will be used when the application is launched to open a specific file, to display
/// search results, and so forth.
/// </summary>
/// <param name="args">Details about the launch request and process.</param>
protected async override void OnLaunched(LaunchActivatedEventArgs args)
{
Frame rootFrame = Window.Current.Content as Frame;
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (rootFrame == null)
{
// Create a Frame to act as the navigation context and navigate to the first page
rootFrame = new Frame();
WindowsBlogReader.Common.SuspensionManager.RegisterFrame(rootFrame, "AppFrame");
var connectionProfile = Windows.Networking.Connectivity.NetworkInformation.GetInternetConnectionProfile();
if (connectionProfile != null)
{
FeedDataSource feedDataSource = (FeedDataSource)App.Current.Resources["feedDataSource"];
if (feedDataSource != null)
{
if (feedDataSource.Feeds.Count == 0)
{
await feedDataSource.GetFeedsAsync();
}
}
}
else
{
var messageDialog = new Windows.UI.Popups.MessageDialog("An internet connection is needed to download feeds. Please check your connection and restart the app.");
var result = messageDialog.ShowAsync();
}
if (args.PreviousExecutionState == ApplicationExecutionState.Terminated)
{
//TODO: Load state from previously suspended application
await WindowsBlogReader.Common.SuspensionManager.RestoreAsync();
}
// Place the frame in the current Window
Window.Current.Content = rootFrame;
}
if (rootFrame.Content == null)
{
// When the navigation stack isn't restored navigate to the first page,
// configuring the new page by passing required information as a navigation
// parameter
if (!rootFrame.Navigate(typeof(ItemsPage), args.Arguments))
{
throw new Exception("Failed to create initial page");
}
}
// Ensure the current window is active
Window.Current.Activate();
}
/// <summary>
/// Invoked when this page is about to be displayed in a Frame.
/// </summary>
/// <param name="e">Event data that describes how this page was reached. The Parameter
/// property is typically used to configure the page.</param>
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
FeedDataSource feedDataSource = (FeedDataSource)App.Current.Resources["feedDataSource"];
if (feedDataSource != null)
{
if (feedDataSource.Feeds.Count == 0)
{
await feedDataSource.GetFeedsAsync();
}
this.DataContext = (feedDataSource.Feeds).First();
}
}
/// <summary>
/// Invoked when this page is about to be displayed in a Frame.
/// </summary>
/// <param name="e">Event data that describes how this page was reached. The Parameter
/// property is typically used to configure the page.</param>
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
FeedDataSource feedDataSource = (FeedDataSource)App.Current.Resources["feedDataSource"];
if (feedDataSource != null)
{
if (feedDataSource.Feeds.Count == 0)
{
await feedDataSource.GetFeedsAsync();
}
foreach (var r in feedDataSource.Feeds[1].Items)
{
feedDataSource.Feeds[0].Items.Add(r);
}
this.DataContext = (feedDataSource.Feeds).First();
}
}
