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HitTestAsync with Polyline

DarleneBanta1

I have a map service and when I call

await MyLayer.HitTestAsync(MyMapView, screenPoint)

with a point feature layer everything works. When I switch to a polyline feature layer I get a popup message box that vshost32.exe has stopped working and I cannot debug from my visual studio window and the app crashes.

Does HitTestAsync support polylines?

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SomeGISGuy

Polylines are supported. Do you have a simple reproducer I can use to test what's going on? Also note that we released 10.2.5 last week which contains many bug fixes.

DarleneBanta1

I'm using 10.2.5 assemblies. I just downloaded the nuget package this morning.

Here is the code that reproduces the issue against our FeatureLayer. Our layer is M-Aware (HasM = true) and its spatial reference is 4269. I can reproduce with our point layers that also has HasM = true. Using the same code sample I cannot reproduce the issue using this layer hosted by ESRI - Layer: Highways (ID: 1)

Should I contact ESRI support or wait for followup here?

Layer: Centerline History (ID: 6)

Name: Centerline History

Display Field: CENTERLINE_HISTORY_ID

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description:

Definition Expression:

Copyright Text:

Default Visibility: false

MaxRecordCount: 1000

Supported Query Formats: JSON, AMF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: false

Can Scale Symbols: false

Extent:

XMin: -180

YMin: -90

XMax: 180

YMax: 90

Spatial Reference: 4269 (4269)

Drawing Info:

Renderer:Simple Renderer:

Symbol:

Style:

esriSLSSolid

Color:

[133, 0, 11, 255]

Width:

Label:

Description:Transparency:

Labeling Info:

HasZ: true

HasM: true

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

CENTERLINE_HISTORY_ID ( type: esriFieldTypeDouble , alias: CENTERLINE_HISTORY_ID )
ROUTE_ID ( type: esriFieldTypeDouble , alias: ROUTE_ID )
SHAPE ( type: esriFieldTypeGeometry , alias: SHAPE )
SHAPE.LEN ( type: esriFieldTypeDouble , alias: SHAPE.LEN )
SHAPE.FID ( type: esriFieldTypeOID , alias: SHAPE.FID )
LINE_ID ( type: esriFieldTypeDouble , alias: LINE_ID )
DESIGNATOR ( type: esriFieldTypeString , alias: DESIGNATOR , length: 50 )
LINE_DESCRIPTION ( type: esriFieldTypeString , alias: LINE_DESCRIPTION , length: 254 )
PRODUCT_TYPE_SCL ( type: esriFieldTypeString , alias: PRODUCT_TYPE_SCL , length: 16 )
PRODUCT_SUBTYPE_SCL ( type: esriFieldTypeString , alias: PRODUCT_SUBTYPE_SCL , length: 16 )
PRODUCT_DESCRIPTION ( type: esriFieldTypeString , alias: PRODUCT_DESCRIPTION , length: 254 )
BEGIN_MEASURE ( type: esriFieldTypeDouble , alias: BEGIN_MEASURE )
END_MEASURE ( type: esriFieldTypeDouble , alias: END_MEASURE )
ROUTE_DESCRIPTION ( type: esriFieldTypeString , alias: ROUTE_DESCRIPTION , length: 254 )
SEQUENCE ( type: esriFieldTypeSmallInteger , alias: SEQUENCE )
ROUTE_TYPE_CL ( type: esriFieldTypeString , alias: ROUTE_TYPE_CL , length: 16 )
EFFECTIVE_FROM_DATE ( type: esriFieldTypeDate , alias: EFFECTIVE_FROM_DATE , length: 36 )
EFFECTIVE_TO_DATE ( type: esriFieldTypeDate , alias: EFFECTIVE_TO_DATE , length: 36 )
OBJECTID ( type: esriFieldTypeInteger , alias: OBJECTID )
CHANGE_TYPE_CL ( type: esriFieldTypeString , alias: CHANGE_TYPE_CL , length: 16 )
LINE_TYPE_CL ( type: esriFieldTypeString , alias: LINE_TYPE_CL , length: 16 )
LINE_TYPE_DESCRIPTION ( type: esriFieldTypeString , alias: LINE_TYPE_DESCRIPTION , length: 254 )
ROUTE_TYPE_DESCRIPTION ( type: esriFieldTypeString , alias: ROUTE_TYPE_DESCRIPTION , length: 254 )

RuntimeMap.zip

DarleneBanta1

Morten Nielsen‌ I think this might be because our layer is M-Aware. Should I submit this as an official support request to ESRI?

JenniferNery

Hi Darlene,

I tried to reproduce with the following code against ArcGIS Runtime SDK for .NET 10.2.5.857 (nuget package) but I am finding these issues instead (no crash)

M-aware point returns empty result on hittest.

M-aware line do not render.

Could you maybe try the following code with your services?

xmlns:esri="http://schemas.esri.com/arcgis/runtime/2013">

<Grid>

<esri:MapView x:Name="MyMapView">

<esri:Map>

<esri:ArcGISTiledMapServiceLayer ServiceUri="http://services.arcgisonline.com/arcgis/rest/services/World_Topo_Map/MapServer"/>

<esri:FeatureLayer ID="Line">

<esri:ServiceFeatureTable ServiceUri="http://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer/1" />

</esri:FeatureLayer>

<esri:FeatureLayer ID="Point" >

<esri:ServiceFeatureTable ServiceUri="http://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer/0"/>

</esri:FeatureLayer>

<esri:FeatureLayer ID="LineHasM">

<esri:ServiceFeatureTable ServiceUri="..." />

</esri:FeatureLayer>

<esri:FeatureLayer ID="PointHasM">

<esri:ServiceFeatureTable ServiceUri="..." />

</esri:FeatureLayer>

</esri:Map>

</esri:MapView>

</Grid>

private async void Select_Click(object sender, RoutedEventArgs e)

{

string message = null;

try

{

foreach (var layer in MyMapView.Map.Layers.OfType<FeatureLayer>())

{

if (layer.SelectedFeatureIDs.Any())

layer.UnselectFeatures(layer.SelectedFeatureIDs.ToArray());

var geometry = await MyMapView.Editor.RequestPointAsync();

var ids = await layer.HitTestAsync(MyMapView, MyMapView.LocationToScreen(geometry));

if (ids != null && ids.Any())

layer.SelectFeatures(ids);

}

catch (TaskCanceledException ex)

{

}

catch (Exception ex)

{

message = ex.Message;

}

if (!string.IsNullOrWhiteSpace(message))

MessageBox.Show(message);

}

Thanks.

DarleneBanta1

My M-Aware line and point are rendering.

The first time I click select Editor.RequestPointAsync never returns a geometry after waiting for a minute or two. Subsequent calls to Editor.RequestPointAsync results in an exception. This exception is thrown with and without my M-Aware line and point layers. I cannot reach the call to HitTestAsync.

System.Threading.Tasks.TaskCanceledException was caught

HResult=-2146233029

Message=A task was canceled.

Source=mscorlib

StackTrace:

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()

at Esri.ArcGISRuntime.Controls.Editor.<RequestPointAsync>d__0.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()

at RuntimeMap.MainWindow.<Select_Click>d__14.MoveNext() in c:\TFS\Sandbox\RuntimeMap\RuntimeMap\MainWindow.xaml.cs:line 219

InnerException:

JenniferNery

Did you await RequestPointAsync? It should return a geometry as soon as you tap or click on the map. The TaskCanceledException may have been triggered by the next call to RequestPointAsync, this will cancel previous async call that has not returned. You can also use MapView.MapViewTapped event to get the screen point for hit test.

Could you also share code to reproduce the crash on hit test? Are we using the same version of the API? Are you using WPF, Store or Phone application?

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