/// <summary>
/// Populates the page with content passed during navigation. Any saved state is also
/// provided when recreating a page from a prior session.
/// </summary>
/// <param name="sender">
/// The source of the event; typically <see cref="NavigationHelper"/>
/// </param>
/// <param name="e">Event data that provides both the navigation parameter passed to
/// <see cref="Frame.Navigate(Type, object)"/> when this page was initially requested and
/// a dictionary of state preserved by this page during an earlier
/// session. The state will be null the first time a page is visited.</param>
private async void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
{
var weatherViewModel = await WeatherDataServiceConsumer.GetWeatherInformation(App.ApplicationViewModel.SelectedLocation);
App.ApplicationViewModel.CurrentWeatherInfo = weatherViewModel;
this.DataContext = App.ApplicationViewModel;
DisplayInformation.AutoRotationPreferences = DisplayOrientations.None;
}
private async void TryAddCity(string cityName)
{
var cityInfo = await WeatherDataServiceConsumer.GetWeatherInformation(cityName);
if (cityInfo != null)
{
App.ApplicationViewModel.SavedCities.Insert(1, cityName);
}
else
{
MessageDialog dialog = new MessageDialog("Cannot locate city", "Error");
await dialog.ShowAsync();
}
this.SearchTextBox.Text = string.Empty;
}
private void EnsureSettings()
{
if (ApplicationData.Current.LocalSettings.Values["SavedCities"] == null)
{
List <string> defaultCities = WeatherDataServiceConsumer.GetDefaultCities();
#if WINDOWS_PHONE_APP
defaultCities.Insert(0, "CurrentLocation");
#endif
ApplicationData.Current.LocalSettings.Values["SavedCities"] = defaultCities.ToArray();
}
if (ApplicationData.Current.LocalSettings.Values["Units"] == null)
{
ApplicationData.Current.LocalSettings.Values["Units"] = "Metric";
}
if (ApplicationData.Current.LocalSettings.Values["SelectedLocation"] == null)
{
#if WINDOWS_PHONE_APP
ApplicationData.Current.LocalSettings.Values["SelectedLocation"] = "CurrentLocation";
#else
ApplicationData.Current.LocalSettings.Values["SelectedLocation"] = "Sofia";
#endif
}
ApplicationViewModel = new ApplicationViewModel();
ApplicationViewModel.SavedCities = new ObservableCollection <string>(ApplicationData.Current.LocalSettings.Values["SavedCities"] as string[]);
#if WINDOWS_PHONE_APP
if (!ApplicationViewModel.SavedCities.Contains("CurrentLocation"))
{
ApplicationViewModel.SavedCities.Insert(0, "CurrentLocation");
}
else
{
ApplicationViewModel.SavedCities.Remove("CurrentLocation");
ApplicationViewModel.SavedCities.Insert(0, "CurrentLocation");
}
#endif
ApplicationViewModel.MeasurementUnits = ApplicationData.Current.LocalSettings.Values["Units"].Equals("Metric") ?
MeasurementUnits.Metric : MeasurementUnits.Imperial;
ApplicationViewModel.SelectedLocation = (string)ApplicationData.Current.LocalSettings.Values["SelectedLocation"];
}
private async void RefreshWeatherInfo(bool forceRefresh = false)
{
if (Window.Current.Dispatcher != null)
{
await Window.Current.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.High, async() =>
{
IsBusy = true;
try
{
var weatherinfo = await WeatherDataServiceConsumer.GetWeatherInformation(this.selectedLocation, forceRefresh);
this.CurrentWeatherInfo = weatherinfo;
}
catch
{
MessageDialog dialog = new MessageDialog("Service unavailable", "Error");
dialog.ShowAsync();
}
});
}
}