我想创建一个简单的应用程序,显示当前应用程序的城市。 当我尝试下面粘贴的代码时,它将返回空的城市,并返回国家=美国,但我住在比利时。Geolocation.CivicAddress.City返回空win8 metro应用程序
根据这一link 它说: 位置服务提供了访问定位功能,如细胞的三角测量,无线网络连接(通过IP地址)和GPS。同时很多现代设备都支持以前所述的某种方式解析位置,应用程序必须处理位置服务无法解析位置或用户已从控制面板禁用位置服务的情况。
我的笔记本没有GPS,但有了IP,它应该知道城市和国家。
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using Windows.Devices.Geolocation;
using System.Threading.Tasks;
// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238
namespace AlarmPro
{
/// <summary>
/// An empty page that can be used on its own or navigated to within a Frame.
/// </summary>
public sealed partial class MainPage : Page
{
public MainPage()
{
this.InitializeComponent();
//InitializeLocationServices();
}
/// <summary>
/// Invoked when this page is about to be displayed in a Frame.
/// </summary>
/// <param name="e">Event data that describes how this page was reached. The Parameter
/// property is typically used to configure the page.</param>
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
TextBlock txt = new TextBlock();
var location = await InitializeLocationServices();
txt.Text = location;
Grid.SetRow(txt, 0);
Grid.SetColumn(txt, 1);
}
private async Task<string> InitializeLocationServices()
{
//Initialize geolocator object
Geolocator geoLocator = new Geolocator();
try
{
//Try resolve the current location
var position = await geoLocator.GetGeopositionAsync();
if (position !=null)
{
string city = position.CivicAddress.City;
string country = position.CivicAddress.Country;
string state = position.CivicAddress.State;
string zip = position.CivicAddress.PostalCode;
string msg = "I am located in " + country;
if (city.Length > 0)
msg += ", city of " + city;
if (state.Length > 0)
msg += ", " + state;
if (zip.Length > 0)
msg += " near zip code " + zip;
return msg;
}
return string.Empty;
}
catch (Exception)
{
//Nothing to do - no GPS signal or some timeout occured.n .
return string.Empty;
}
}
}
}
是的,地理定位在控制面板上启用。但在该地区,更改位置设置为美国,我将其更改为比利时,现在我的代码显示我是在该国,但仍然是城市是空的 –
您是否使用任何代理? –
我的家庭设置没有任何代理,我在我的ISP下。 –