topic Re: set inital extent for offline map in Qt Maps SDK Questions

set inital extent for offline map

rsharma — Fri, 11 Dec 2020 08:03:44 GMT

Hi, i m now working with offline map, now i have to set initial extent of my map, i could not find any option anywheer

Re: set inital extent for offline map

LukeSmallwood — Fri, 11 Dec 2020 09:32:39 GMT

Hi @rsharma - if your Map is not yet loaded (for example you read it directly from a MobileMapPackage already on your device) you should be able to use void Map::setInitialViewpoint(const Esri::ArcGISRuntime::Viewpoint &viewpoint) before you set it on the MapView.

Another approach would be to use https://developers.arcgis.com/qt/latest/cpp/api-reference/esri-arcgisruntime-mapview.html or similar to set the position directly on the view.

Hope that helps,

Luke

Re: set inital extent for offline map

rsharma — Fri, 11 Dec 2020 09:52:24 GMT

I am using qml with js not cpp. does this fnc work for setting extent setViewpointGeometry

Re: set inital extent for offline map

rsharma — Tue, 15 Dec 2020 05:06:58 GMT

hi@LukeSmallwood

i m trying like this on offline map, but could not get success to set initial view point. Any help would be great from your end. Thanks in advance.

MapView { id:mapView property real initialMapRotation: 0 Map { initialViewpoint: viewpoint } Component.onCompleted: { mmpk.load() } anchors { left: parent.left right: parent.right top: parent.top bottom: parent.bottom } rotationByPinchingEnabled: true zoomByPinchingEnabled: true // *** Declare graphics layer***// GraphicsOverlay { id: graphicsOverlay } }//End Mapview // Create the intial Viewpoint ViewpointExtent { id: viewpoint extent: Envelope { xMin: xMinVal yMin: yMinVal xMax: xMaxVal yMax: yMaxVal spatialReference: SpatialReference { wkid: 4326 } } }

Re: set inital extent for offline map

rsharma — Tue, 29 Dec 2020 11:58:50 GMT

Please have the answer

MobileMapPackage { id: mmpk path: assetsPath + mapPackageFileName onLoadStatusChanged: { if (loadStatus !== Enums.LoadStatusLoaded) { return; } if (mmpk.maps.length < 1) { return; } mapView.map = mmpk.maps[0]; mapView.map.initialViewpoint = viewpoint; } onErrorChanged: { console.log("Mobile Map Package Error: %1 %2".arg(error.message).arg(error.additionalMessage)); } }