The Qt Location API helps you create viable mapping solutions using the data available from some of the popular location services.
The Qt Location API enables you to:
- access and present map data,
- support touch gesture on a specific area of the map,
- query for a specific geographical location and route,
- add additional layers on top, such as polylines and circles,
- and search for places and related images.
To load the Qt Location module, add the following statement to your .qml files
import QtPositioning 5.5 import QtLocation 5.6
For C++ projects include the header appropriate for the current use case, for example applications using routes may use
The .pro file should have the location keyword added
QT += location
The API is split into sub-modules, which provide QML and C++ interfaces for specific purposes. They focus mainly on Map and Place information. The required position data can be retrieved using the QtPositioning module.
The Places submodule is the natural complement to Positioning, providing a source of geographical data about Places of Interest (POI). Besides the source information, the API provides information about the location, size, and other related information about a POI. The Places API can also retrieve images, reviews, and other content related to a place.
Maps and Navigation
The module provides the QML and C++ alternatives for maps and navigation. The C++ alternative provides utility classes to get geocoding (finding a geographic coordinate from a street address) and navigation (including driving and walking directions) information, whereas its QML counterpart provides UI components to render the information.
API References and Examples
The following are lists of the classes and UI components provided by the module, with example applications to demonstrate their usage:
|QML API Reference||Full list of QML components in the Qt Location API|
|C++ API Reference by domain||Full list of C++ classes and methods of the Qt Location APIs sorted by domain|
|C++ API Reference||Full list of C++ classes and methods of the Qt Location APIs|
|Example Apps||Examples demonstrating use of the Qt Location APIs|
|Maps and Navigation Tutorial||Tutorial introducing the QML Maps Types|
Plugin References and Parameters
Information about plugins, important notes on their usage, parameters that can be provided to influence their behavior.
Uses Esri for location services.
Uses the relevant services provided by HERE.
Provides an empty map intended to be used as background for an overlay layers for map items.
Uses Mapbox GL for location services.
Uses Mapbox for location services.
Uses Open Street Map and related services.
Implementing New Back-Ends and Porting
For systems integrators and distributors, information related to making Qt Location available for a new platform.
|GeoServices||Information about the Qt Location GeoServices plugins|
|Places||Information for places backend implementors|
|API changes||Information about QML API changes since 5.4|
Licenses and Attributions
Qt Location is available under commercial licenses from The Qt Company. In addition, it is available under the GNU Lesser General Public License, version 3, or the GNU General Public License, version 2. See Qt Licensing for further details.
Furthermore Qt Location potentially contains third party modules under following permissive licenses:
© 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.