protected async void OnItemSelected(object sender, SelectedItemChangedEventArgs e)
{
if (e.SelectedItem == null)
{
return; //ItemSelected is called on deselection, which results in SelectedItem being set to null
}
string selectedCountry = e.SelectedItem.ToString();
string url = "http://api.population.io:80/1.0/population/" + selectedCountry + "/2016-02-01/";
try
{
JsonValue jsonString = await FetchCountryPopAsync(url);
JsonObject jsonObject = jsonString as JsonObject;
TotalPopulation totalPopulation = JsonConvert.DeserializeObject <TotalPopulation>(jsonObject["total_population"].ToString());
Country country = new Country();
country.Population = totalPopulation.Population;
country.CountryName = e.SelectedItem.ToString();
BdConfig.insertDB(country);
DisplayAlert("World Population", e.SelectedItem.ToString() + " has " + totalPopulation.Population.ToString() + " people in 2016", "Cancel");
}
catch (Exception ex) {
DisplayAlert("No data", "No data recorded for this year", "Cancel");
}
}
protected override async void OnAppearing()
{
List <Country> countriesAsList = new List <Country>();
string url = "http://api.population.io:80/1.0/countries";
countriesAsList = BdConfig.topCountries();
listViewCountriesTop.ItemsSource = countriesAsList;
}
public MainPage()
{
InitializeComponent();
BindingContext = this;
BdConfig.createDB();
}