public async void Prueba()
{
weatherData = await _restService.GetWeatherData2Async();
ObservableCollection <ValueN> lista_noticias = new ObservableCollection <ValueN>(weatherData);
get_soluciones.ItemsSource = lista_noticias;
}
protected override async void OnAppearing()
{
if (weatherData.Count < 1)
{
weatherData = await _restService.GetWeatherData2Async();
BindingContext = weatherData;
OnAppearing();
}
}