/// <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="navigationParameter">The parameter value passed to
/// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested.
/// </param>
/// <param name="pageState">A dictionary of state preserved by this page during an earlier
/// session. This will be null the first time a page is visited.</param>
protected override async void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)
{
// Allow saved page state to override the initial item to display
if (pageState != null && pageState.ContainsKey("SelectedItem"))
{
navigationParameter = pageState["SelectedItem"];
}
String YWSID = "Bi9Fsbfon92vmD4DkkO4Fg";
String url;
if (navigationParameter != null && navigationParameter != "")
{
model = (Model)navigationParameter;
}
if (model != null)
{
url = "http://api.yelp.com/business_review_search?term=food&location=" + model.Location + "&ywsid=" + YWSID;
}
else
{
Geolocator locator = new Geolocator();
Geoposition geoPos = await locator.GetGeopositionAsync();
Geocoordinate geoCoord = geoPos.Coordinate;
url = "http://api.yelp.com/business_review_search?term=food&lat=" + geoCoord.Latitude + "&long=" + geoCoord.Longitude + "&ywsid=" + YWSID;
}
var httpClient = new HttpClient();
String content = await httpClient.GetStringAsync(url);
response = JsonObject.Parse(content);
if (response.GetNamedArray("businesses").Count == 0)
{
if (model != null)
{
model.error = true;
GoBack(this, null);
}
else
{
this.Frame.Navigate(typeof(LocationEntryPage));
}
}
else
{
StopLoading();
PopulateNewRestaurant();
}
}
private void Button_Click_1(object sender, RoutedEventArgs e)
{
model = new Model();
model.Location = Location.Text;
this.Frame.Navigate(typeof(MainPage), model);
}
public LocationEntryPage()
{
this.InitializeComponent();
this.NavigationCacheMode = NavigationCacheMode.Enabled;
model = null;
}
public MainPage()
{
this.InitializeComponent();
model = null;
pageTitle.Text = "Restaurant near ";
}