get user coordinates without going to application map page

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08-25-2020 03:24 AM
rsharma
Occasional Contributor III

HI i want to get user location coordinates without going to its map page like this link i followed. It works only on map page

Get the path covered by user and display current location 

So that i can show user history on map even when it switched to any other page of application.

Is their any way so that even when a user is not on map page my app get its coordinates.

This is the code i edited for map page only. 

import QtQuick 2.6
import QtQuick.Controls 2.2
import Esri.ArcGISRuntime 100.6
Rectangle {
    id: rootRectangle
    clip: true
    width: 800
    height: 600
    readonly property int initialZoomScale: 8000
    property bool trackingEnabled: false
    property Point lastPosition: null
    // add a mapView component
    MapView {
        anchors.fill: parent
        Map {
            BasemapDarkGrayCanvasVector {}
        }
        // set initial viewpoint near UCLA, Los Angeles
        ViewpointCenter {
            Point {
                x: -13185535.98
                y: 4037766.28
            }
            targetScale: initialZoomScale
        }
        Button {
            id: button
            text: trackingEnabled ? "Stop tracking" : "Start tracking"
            anchors.horizontalCenter: parent.horizontalCenter
            width: 200
            onClicked: trackingEnabled =! trackingEnabled
        }
        // if tracking is enabled then show location history
        locationDisplay.onLocationChanged: {
            if (!trackingEnabled)
                return;
            if (lastPosition !== null) {
                polylineBuilder.addPoint(lastPosition);
            }
            // update last position
            lastPosition = locationDisplay.location.position;
            console.log(JSON.stringify(lastPosition.json));
            // update the polyline
            locationHistoryLineOverlay.graphics.append(ArcGISRuntimeEnvironment.createObject("Graphic", {geometry: polylineBuilder.geometry}));
         console.log(JSON.stringify(polylineBuilder.geometry.json.paths));
        }
        Component.onCompleted: {
            locationDisplay.autoPanMode = Enums.LocationDisplayAutoPanModeCompassNavigation;
             locationDisplay.start();
        }
        GraphicsOverlay {
            id: locationHistoryLineOverlay
            SimpleRenderer {
                SimpleLineSymbol {
                    color: "blue"
                    style: Enums.SimpleLineSymbolStyleDash
                    width: 5
                }
            }
        }
    }//End Mapview
    PolylineBuilder {
        id: polylineBuilder
        spatialReference: SpatialReference { wkid: 4326 }
    }
}

					
				
			
			
				
			
			
				
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LucasDanzinger
Esri Frequent Contributor

AppStudio is based on  5.13 I believe, so you'll need to import an older version. Since I'm not sure which version of Qt maps to which version of QtPositioning, I'd try decreasing until you find a version that works For example, try importing version 5.13.

As for how to stop it, you can call the stop method on PostionSource - PositionSource QML Type | Qt Positioning 5.15.0 

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rsharma
Occasional Contributor III

I get this link Position display—ArcGIS Runtime SDK for Qt | ArcGIS for Developers  Is their any example for recording. tracklog etc

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LucasDanzinger
Esri Frequent Contributor

You can use Qt's PositionSource type. The LocationDisplay is simply used to display the location on the map. If you just want to get the position from the device, PositionSource will do that for you.

PositionSource {
Component.onCompleted: start();
onPositionChanged: console.log("position changed", position.coordinate)
}

PositionSource QML Type | Qt Positioning 5.15.0 

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rsharma
Occasional Contributor III

It gives me error 

module \"QtPositioning\" version 5.15 is not installed" so i import 5.11 version

I am using arcgis appstudio version 4.2

Query 1: Plus i want this to be happen on when user sign in on my property, so i will do that but how to put it in if condition to start on login if condition checking and  how to stop it. like if user sign-out from the property. I will use the code on sign on click  but how to stop on sign-out btn click

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LucasDanzinger
Esri Frequent Contributor

AppStudio is based on  5.13 I believe, so you'll need to import an older version. Since I'm not sure which version of Qt maps to which version of QtPositioning, I'd try decreasing until you find a version that works For example, try importing version 5.13.

As for how to stop it, you can call the stop method on PostionSource - PositionSource QML Type | Qt Positioning 5.15.0 

View solution in original post

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