private void InitializeItemsViewModel()
{
Title = "Your Locations List";
LocationInfos = new ObservableCollection <LocationInfo>();
LoadItemsCommand = new Command(async() => await ExecuteLoadItemsCommand());
DeleteItemsCommand = new Command(async location => await ExecuteDeleteLocationCommand(location));
MessagingCenter.Subscribe <SearchPage, LocationInfo>(this, "AddItem", async(obj, item) =>
{
if (LocationInfos.Any(element => element.Key.Equals(item.Key)))
{
return;
}
var weather = await WeatherApiClient.GetCurrentWeather(item.Key);
item.WeatherInfo = weather;
LocationInfos.Add(item);
await LocationService.AddItemAsync(item);
});
}
async Task ExecuteLoadItemsCommand()
{
await ExecuteCommand(async() =>
{
var items = await LocationService.GetItemsAsync();
foreach (var locationInfo in items)
{
var weather = await WeatherApiClient.GetCurrentWeather(locationInfo.Key);
if (weather != null)
{
locationInfo.WeatherInfo = weather;
}
}
if (items != null)
{
LocationInfos.Clear();
foreach (var item in items)
{
LocationInfos.Add(item);
}
}
}
);
}