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PositionDisplay is not auto panning map

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4
05-27-2016 07:18 AM
GuilhermeSG
Deactivated User

I have a Map like so:

Map  {

id: basemap

focus: true

positionDisplay {

  showPosition: true

  positionSource: PositionSource {

    id: positionSrc

    name: "MyPlugin"

    updateInterval: 500 //ms

    onPositionChanged: { console.log("current pos:", position.coordinate.latitude, position.coordinate.longitude); }

  }

  ArcGISLocalTiledLayer {

     path: "./Topographic.tpk"

   }

}

I created a PositionSource plugin and it updates fine, printing the new position at every 500ms. However the positionDisplay does not update its mapPoint and does not AutoPan

I have even modified the 'mode' property to every possible value:

AutoPanModeOff

AutoPanModeDefault

AutoPanModeNavigation

AutoPanModeCompass

What is missing? I expected it to zoom in to my location and follow it as latitude and longitude updates inside positionSrc

P.S.: If I print basemap.positionDisplay.mapPoint the result is 'null'

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4 Replies
LucasDanzinger
Esri Frequent Contributor

Did you develop your own custom position plugin? Or are you just using the out of the box plugin? Just curious because of the "MyPlugin" name specified. Otherwise, seems like it should work. Does the Position display sample in the QML sample app work for you? What platform are you on?

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GuilhermeSG
Deactivated User

Yes, it is the plugin that I developed on my own. It works, because it prints a new position every 500ms.
I am on Windows 7, Qt 5.6.0 32bit

I have tested the sample app provided with the installation of the SDK.

The live example fails to get my current position using the default plugin (even though I have it set up on my windows control panel).
But the simulated example that uses nmeasource works.

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GuilhermeSG
Deactivated User

I just copied this code from the sample into mine:

Text {

    text: locationPoint.isEmpty || !locationPoint.valid

       ? "Invalid Coordinates"

        : locationPoint.toDegreesMinutesSeconds(2) +

          (positionSource.position.horizontalAccuracyValid

             ? " ± " + Math.round(positionSource.position.horizontalAccuracy.toString()) + "m"

             : "")

       color: locationPoint.valid ? "white": "red"

       font {

            bold: true

            pointSize: 16

        }

  }

And it prints my coordinates correctly

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LucasDanzinger
Esri Frequent Contributor

Are you setting the mode to Enums.AutoPanModeNavigation, or just the "AutoPanModeNavigation" string?

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