public void SetMockData(IGeolocationService geolocation) { Locations.Clear(); void addLocation(string location) { App.InvokeOnMainThreadAsync(() => Locations.Add(new Location(location, Locations.Count + 1, geolocation.GetAddressList(location).FirstOrDefault())) ); } addLocation("Warszawa"); addLocation("Wrocław"); addLocation("Bydgoszcz"); addLocation("Białystok"); addLocation("Rzeszów"); addLocation("Gdańsk"); addLocation("Poznań"); addLocation("Kraków"); addLocation("Szczecin"); addLocation("Lublin"); addLocation("Katowice"); addLocation("Łódź"); addLocation("Koszalin"); addLocation("Częstochowa"); addLocation("Radom"); addLocation("Płock"); addLocation("Zamość"); addLocation("Chojnice"); addLocation("Świnoujście"); addLocation("Słupsk"); addLocation("Opole"); addLocation("Zielona Góra"); addLocation("Olsztyn"); }