public static async Task <string> GetCity()
{
var accessStatus = await Geolocator.RequestAccessAsync();
BasicGeoposition baspos = new BasicGeoposition();
switch (accessStatus)
{
case GeolocationAccessStatus.Allowed:
{
Geolocator geolocator = new Geolocator {
DesiredAccuracyInMeters = 0
};
Geoposition pos = await geolocator.GetGeopositionAsync();
Geopoint myLocation = pos.Coordinate.Point;
baspos = myLocation.Position;
baspos = PositionTransform.Transfrom(baspos);
const string MovieSearch_Api = "http://restapi.amap.com/v3/geocode/regeo?key=a3a90de8b27f31e0054c34e61e0e3d9f&location={0}&extensions=base ";
HttpClient httpclient = new HttpClient();
HttpResponseMessage response = new HttpResponseMessage();
string result = null;
string Location = Convert.ToString(baspos.Longitude) + "," + Convert.ToString(baspos.Latitude);
string Api = MovieSearch_Api.Replace("{0}", Location);
response = await httpclient.GetAsync(Api);
result = await response.Content.ReadAsStringAsync();
return(result);
}
case GeolocationAccessStatus.Denied:
{
var dialog = new MessageDialog("已拒绝程序对位置的访问权,请至设置-隐私-位置中打开本程序的位置访问权限", "异常提示");
dialog.Commands.Add(new UICommand("确定", cmd => { }));
var a = await dialog.ShowAsync();
bool result = await Launcher.LaunchUriAsync(new Uri("ms-settings:privacy-location"));
return("0");
}
case GeolocationAccessStatus.Unspecified:
{
var dialog = new MessageDialog("未指明程序对位置的访问权,请至设置-隐私-位置中打开本程序的位置访问权限", "异常提示");
dialog.Commands.Add(new UICommand("确定", cmd => { }));
var a = await dialog.ShowAsync();
bool result = await Launcher.LaunchUriAsync(new Uri("ms-settings:privacy-location"));
return("1");
}
}
return("2");
}
private async Task FirstStep()
{
var accessStatus = await Geolocator.RequestAccessAsync();
BasicGeoposition baspos = new BasicGeoposition();
switch (accessStatus)
{
case GeolocationAccessStatus.Allowed:
{
Geolocator geolocator = new Geolocator {
DesiredAccuracyInMeters = 0
};
Geoposition pos = await geolocator.GetGeopositionAsync();
myLocation = pos.Coordinate.Point;
baspos = myLocation.Position;
baspos = PositionTransform.Transfrom(baspos);
myLocation = new Geopoint(baspos);
UIElement marker = PointMeMarker();
MyMap.Children.Add(marker);
MapControl.SetLocation(marker, myLocation);
MyMap.Center = myLocation;
MyMap.LandmarksVisible = true;
break;
}
case GeolocationAccessStatus.Denied:
{
var dialog = new MessageDialog("已拒绝程序对位置的访问权,请至设置-隐私-位置中打开本程序的位置访问权限", "异常提示");
dialog.Commands.Add(new UICommand("确定", cmd => { }));
var a = await dialog.ShowAsync();
bool result = await Launcher.LaunchUriAsync(new Uri("ms-settings:privacy-location"));
return;
}
case GeolocationAccessStatus.Unspecified:
{
var dialog = new MessageDialog("未指明程序对位置的访问权,请至设置-隐私-位置中打开本程序的位置访问权限", "异常提示");
dialog.Commands.Add(new UICommand("确定", cmd => { }));
var a = await dialog.ShowAsync();
bool result = await Launcher.LaunchUriAsync(new Uri("ms-settings:privacy-location"));
return;
}
}
string position = baspos.Longitude + "," + baspos.Latitude;
string json = null;
try
{
json = await Httprequest.HttpRequest.GetPositionSearchRequest(position, SerchRange);
}
catch (HttpRequestException)
{
var dialog = new MessageDialog("周边检索异常(未能成功发送请求)", "异常提示");
dialog.Commands.Add(new UICommand("确定", cmd => { }));
var a = await dialog.ShowAsync();
}
if (!string.IsNullOrWhiteSpace(json))
{
POIResult = JsonConvert.DeserializeObject <Rootobject1>(json);
viewmodel.poiresult = POIResult.pois;
foreach (Pois i in POIResult.pois)
{
Geopoint geo = LocationToGeoPoint(i.location);
MapIcon mapIcon1 = new MapIcon();
mapIcon1.Location = geo;
mapIcon1.NormalizedAnchorPoint = new Point(0.5, 1.0);
mapIcon1.Title = i.name;
MyMap.MapElements.Add(mapIcon1);
}
}
}