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Export Tiles from built-in basemap in ArcGIS Runtime

NicholasLiccini

Hi!

I would like to save a predefined area of interest of a MapView that can be loaded when there is no network connection. I tried following the ArcGIS Samples for "ExportTiles" but it keeps failing. I am not sure what the correct solution would be, but perhaps someone could provide the steps I should follow to export the map tiles.

Thank you!

Nick

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Accepted answers

LukeSmallwood

Hi Nicholas - which online basemap are you trying to export with? If you are using the standard base maps you will find that they do not support exporting tile packages. However, you can use the maps defined in this group instead:

http://www.arcgis.com/home/group.html?id=3a890be7a4b046c7840dc4a0446c5b31#overview

I hope that helps,

Luke

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LukeSmallwood

http://www.arcgis.com/home/group.html?id=3a890be7a4b046c7840dc4a0446c5b31#overview

I hope that helps,

Luke

NicholasLiccini

Okay I will use those. How do I access them from within the Runtime? I've tried copying the given URL and I keep getting an error message saying that there was an invalid token or unable to generate token

LukeSmallwood

Hi Nicholas,

For exporting tiles from these services you will need to authenticate with an arcgisonline account.

This guide topic Access the ArcGIS platform—ArcGIS Runtime SDK for Qt | ArcGIS for Developers should give you some idea of how to go about authenticating your app. You probably want to look at the AuthenticationManager section. The API reference for that type (AuthenticationManager Class | ArcGIS for Developers ) also has some useful information.

Basically, you need to respond to the request for a token with some credentials - using the AuthenticationManager (singleton) with an AuthenticationView qml component will give you a sign in experience.

Does that make sense?

One question I had is whether this is a one time export (e.g. to prepare the data) or if this is something you would like your app to do ever time it runs?

I hope that helps,

Luke

NicholasLiccini

Thank you! I will look into this and try to get it working.

To answer your question, I would like users to have the option to save the current view of the map for offline use at any time. For example, say you wanted to use the application in an area without network connection. The user could find that area and export it sometime before travelling to the area without internet. Does that make sense?

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