topic Re: Move Point Feature to Current GPS Location in ArcGIS API for Flex Questions

Move Point Feature to Current GPS Location

MattSheehan — Mon, 01 Apr 2013 14:30:10 GMT

On a mobile I have a feature layer and am trying to move a point feature to my current GPS location. The following is a code snippet. I'm finding the only way I can get the point to reposition is if I refresh() the featurelayer. Is there any way to avoid needing to do this?

    if(FlexGlobals.topLevelApplication.geoLong != null && FlexGlobals.topLevelApplication.geoLat != null)     {                                                 //Remove the glow                         ModelEdit.instance.editor.attributeInspector.activeFeature.filters = [];                         //Remove attribute inspector                         okButton.dispatchEvent(new MouseEvent(MouseEvent.CLICK, true, false));                                                   var geoLocateIt:MapPoint = new MapPoint(FlexGlobals.topLevelApplication.geoLong, FlexGlobals.topLevelApplication.geoLat, Model.instance.map.spatialReference);                         var geoLocateWebMerc:* = WebMercatorUtil.geographicToWebMercator(geoLocateIt);                                                 (ModelEdit.instance.editor.attributeInspector.activeFeature.geometry as MapPoint).update(geoLocateWebMerc.x, geoLocateWebMerc.y, Model.instance.map.spatialReference);                                                                         //HOW DO I AVOID REFRESHING THE FEATURELAYER                         (ModelEdit.instance.editor.attributeInspector.activeFeature.graphicsLayer as FeatureLayer).refresh();                                                 (ModelEdit.instance.editor.attributeInspector.activeFeature.graphicsLayer as FeatureLayer).applyEdits(null, [ModelEdit.instance.editor.attributeInspector.activeFeature], null);                         (ModelEdit.instance.editor.attributeInspector.activeFeature.graphicsLayer as FeatureLayer).addEventListener(FeatureLayerEvent.EDITS_COMPLETE, editCompleteHdlr)                           }

Thanks

--Rory

Re: Move Point Feature to Current GPS Location

YannCabon — Mon, 01 Apr 2013 16:19:00 GMT

Hi,

Instead of updating the mapPoint, set it to the feature:

var geom:MapPoint = ModelEdit.instance.editor.attributeInspector.activeFeature.geometry as MapPoint; geom.update(geoLocateWebMerc.x, geoLocateWebMerc.y, Model.instance.map.spatialReference); ModelEdit.instance.editor.attributeInspector.activeFeature.geometry = geom;

This should redraw only that feature.

    if(FlexGlobals.topLevelApplication.geoLong != null && FlexGlobals.topLevelApplication.geoLat != null)     {                                                 //Remove the glow                         ModelEdit.instance.editor.attributeInspector.activeFeature.filters = [];                         //Remove attribute inspector                         okButton.dispatchEvent(new MouseEvent(MouseEvent.CLICK, true, false));                                                   var geoLocateIt:MapPoint = new MapPoint(FlexGlobals.topLevelApplication.geoLong, FlexGlobals.topLevelApplication.geoLat, Model.instance.map.spatialReference);                         var geoLocateWebMerc:* = WebMercatorUtil.geographicToWebMercator(geoLocateIt);                                                 (ModelEdit.instance.editor.attributeInspector.activeFeature.geometry as MapPoint).update(geoLocateWebMerc.x, geoLocateWebMerc.y, Model.instance.map.spatialReference);                                                                         //HOW DO I AVOID REFRESHING THE FEATURELAYER                         (ModelEdit.instance.editor.attributeInspector.activeFeature.graphicsLayer as FeatureLayer).refresh();                                                 (ModelEdit.instance.editor.attributeInspector.activeFeature.graphicsLayer as FeatureLayer).applyEdits(null, [ModelEdit.instance.editor.attributeInspector.activeFeature], null);                         (ModelEdit.instance.editor.attributeInspector.activeFeature.graphicsLayer as FeatureLayer).addEventListener(FeatureLayerEvent.EDITS_COMPLETE, editCompleteHdlr)                           }

Thanks

--Rory

Re: Move Point Feature to Current GPS Location

MattSheehan — Mon, 01 Apr 2013 17:48:35 GMT

Thanks Yann. That works nicely.