/// <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.
/// This parameter is typically used to configure the page.</param>
protected override void OnNavigatedTo(NavigationEventArgs e)
{
AMapPolyline line = new AMapPolyline();
pointsOfLine = new[] { new LngLat(116.48236, 39.987326), new LngLat(116.450712, 39.93041) };
line.Path = new AGeopath(pointsOfLine);
line.StrokeColor = Colors.Red;
baseLayer.Add(line);
AMapPolygon rectRectangle = new AMapPolygon();
pointsOfRect = new[] { new LngLat(116.438764, 39.96041), new LngLat(116.438764, 39.963728), new LngLat(116.453712, 39.963728), new LngLat(116.453712, 39.96041) };
rectRectangle.Path = new AGeopath(pointsOfRect);
baseLayer.Add(rectRectangle);
}
private void Button_DrawPolygon_Click(object sender, RoutedEventArgs e)
{
//绘多边形
List <LatLng> lnglats = new List <LatLng>();
lnglats.Add(new LatLng(amap.Center.latitude + 0.02, amap.Center.longitude + 0.03));
lnglats.Add(new LatLng(amap.Center.latitude + 0.03, amap.Center.longitude - 0.03));
lnglats.Add(new LatLng(amap.Center.latitude - 0.026, amap.Center.longitude - 0.03));
lnglats.Add(amap.Center);
lnglats.Add(new LatLng(amap.Center.latitude - 0.04, amap.Center.longitude + 0.035));
polylgon = amap.AddPolygon(new AMapPolygonOptions()
{
FillColor = Color.FromArgb(30, 255, 0, 255),
Points = lnglats,
StrokeColor = Color.FromArgb(255, 102, 136, 255),
StrokeWidth = 2
});
}
private void Polygon_OnClick(object sender, RoutedEventArgs e)
{
double interval = 0.02;
List <LngLat> lnglats = new List <LngLat>();
lnglats.Add(new LngLat(aMapControl.Center.Longitude - interval, aMapControl.Center.Latitude + interval));
lnglats.Add(new LngLat(aMapControl.Center.Longitude + interval, aMapControl.Center.Latitude + interval));
lnglats.Add(new LngLat(aMapControl.Center.Longitude + interval, aMapControl.Center.Latitude - interval));
lnglats.Add(aMapControl.Center);
lnglats.Add(new LngLat(aMapControl.Center.Longitude - interval, aMapControl.Center.Latitude - interval));
polygon = new AMapPolygon
{
FillColor = Colors.Red,
Path = new AGeopath(lnglats),
StrokeColor = Colors.Blue,
Joint = Joint.CLIPPED,
StrokeThickness = 10
};
baseLayer.Add(polygon);
}
private async void PolygonSearch_OnClick(object sender, RoutedEventArgs e)
{
baselayer.Clear();
aMapControl.HideInfoWindow();
string keywords = "肯德基";
string types = "快餐厅";
uint offset = 50;
string city = "北京";
var lngLats = new List <LngLat>
{
new LngLat(aMapControl.Center.Longitude + 0.03, aMapControl.Center.Latitude + 0.02),
new LngLat(aMapControl.Center.Longitude - 0.03, aMapControl.Center.Latitude + 0.03),
new LngLat(aMapControl.Center.Longitude - 0.03, aMapControl.Center.Latitude - 0.026),
new LngLat(aMapControl.Center.Longitude + 0.035, aMapControl.Center.Latitude - 0.04),
new LngLat(aMapControl.Center.Longitude + 0.045, aMapControl.Center.Latitude - 0.046)
};
var polygon = new AMapPolygon
{
FillColor = Color.FromArgb(30, 255, 0, 255),
Path = new AGeopath(lngLats),
StrokeColor = Color.FromArgb(255, 102, 136, 255),
StrokeThickness = 2
};
await baselayer.Add(polygon);
SearchPolygon searchpolygon = new SearchPolygon();
icons = new List <AMapIcon>();
//多边形
searchpolygon.Points = new List <AMapLocation>
{
new AMapLocation()
{
Lon = lngLats[0].Longitude, Lat = lngLats[0].Latitude
},
new AMapLocation()
{
Lon = lngLats[1].Longitude, Lat = lngLats[1].Latitude
},
new AMapLocation()
{
Lon = lngLats[2].Longitude, Lat = lngLats[2].Latitude
},
new AMapLocation()
{
Lon = lngLats[3].Longitude, Lat = lngLats[3].Latitude
},
new AMapLocation()
{
Lon = lngLats[4].Longitude, Lat = lngLats[4].Latitude
}
};
AMapPOIResults result = await AMapPOISearch.POIPolygon(keywords, types, searchpolygon, null, 0, offset, 1, Extensions.All, city);
if (result.Erro == null)
{
if (result.POIList == null || result.POIList.Count == 0)
{
Debug.WriteLine("无查询结果");
return;
}
IEnumerable <AMapPOI> pois = result.POIList;
foreach (AMapPOI item in pois)
{
var icon = new AMapIcon {
Location = new LngLat(item.Location.Lon, item.Location.Lat)
};
icon.Tapped += icon_Tapped;
icon.Data = item.Address;
await baselayer.Add(icon);;
}
LngLatBoundingBoxBuilder builder = new LngLatBoundingBoxBuilder(lngLats);
aMapControl.TrySetViewBoundsAsync(builder.Build(), AMapAnimationKind.Default);
}
else
{
Debug.WriteLine(result.Erro.Message);
}
}
