80 строки
2.5 KiB
C#
80 строки
2.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Threading.Tasks;
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using Windows.Devices.Geolocation;
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using Windows.Services.Maps;
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namespace Xamarin.Forms.Maps.UWP
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{
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internal class GeocoderBackend
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{
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public static void Register()
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{
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Geocoder.GetPositionsForAddressAsyncFunc = GetPositionsForAddress;
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Geocoder.GetAddressesForPositionFuncAsync = GetAddressesForPositionAsync;
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}
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static string AddressToString(MapAddress address)
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{
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string building = "", house = "", city = "", country = "";
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var bldg = new List<string>();
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if (!"".Equals(address.BuildingRoom))
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bldg.Add(address.BuildingRoom);
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if (!"".Equals(address.BuildingFloor))
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bldg.Add(address.BuildingFloor);
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if (!"".Equals(address.BuildingName))
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bldg.Add(address.BuildingName);
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if (!"".Equals(address.BuildingWing))
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bldg.Add(address.BuildingWing);
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if (bldg.Count > 0)
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building = string.Join(" ", bldg) + Environment.NewLine;
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var hs = new List<string>();
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if (!"".Equals(address.StreetNumber))
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hs.Add(address.StreetNumber);
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if (!"".Equals(address.Street))
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hs.Add(address.Street);
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if (hs.Count > 0)
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house = string.Join(" ", hs) + Environment.NewLine;
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var cs = new List<string>();
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if (!"".Equals(address.Town))
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cs.Add(address.Town);
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if (!"".Equals(address.Neighborhood))
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cs.Add(address.Neighborhood);
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else if (!"".Equals(address.Region))
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cs.Add(address.Region);
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if (!"".Equals(address.PostCode))
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cs.Add(address.PostCode);
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if (cs.Count > 0)
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city = string.Join(" ", cs) + Environment.NewLine;
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if (!"".Equals(address.Country))
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country = address.Country;
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return building + house + city + country;
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}
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static async Task<IEnumerable<string>> GetAddressesForPositionAsync(Position position)
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{
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var queryResults =
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await
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MapLocationFinder.FindLocationsAtAsync(
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new Geopoint(new BasicGeoposition { Latitude = position.Latitude, Longitude = position.Longitude }));
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var addresses = new List<string>();
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foreach (var result in queryResults?.Locations)
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addresses.Add(AddressToString(result.Address));
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return addresses;
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}
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static async Task<IEnumerable<Position>> GetPositionsForAddress(string address)
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{
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var queryResults = await MapLocationFinder.FindLocationsAsync(address, null, 10);
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var positions = new List<Position>();
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foreach (var result in queryResults?.Locations)
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positions.Add(new Position(result.Point.Position.Latitude, result.Point.Position.Longitude));
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return positions;
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}
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}
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} |