Qt Location

The Qt Location API helps you create viable mapping solutions using the data available from some of the popular location services.

概述

Qt Location API 能夠：

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.

快速入門

To load the Qt Location module, add the following statement to your .qml files

import QtPositioning 6.5
import QtLocation 6.5

The QtLocation QML module depends on the QtPositioning QML module. Therefore every QML application that imports the QtLocation QML module must always import the QtPositioning module as well.

對於 include 當前使用情況適當 header 的 C++ 工程，例如，使用路由的應用程序可以使用

#include <QGeoRoute>

.pro 文件應有 location 添加關鍵詞

QT += location

子模塊

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 模塊。

Places

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.

Places introduction:

for QML

for C++

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.

Maps and Navigation introduction:

for QML

for C++

API 參考和範例

The following are lists of the classes and UI components provided by the module, with example applications to demonstrate their usage:

QML API 參考	Full list of QML components in the Qt Location API
C++ API 參考按領域	Full list of C++ classes and methods of the Qt Location APIs sorted by domain
C++ API 參考	Full list of C++ classes and methods of the Qt Location APIs
範例 App	Examples demonstrating use of the Qt Location APIs
地圖和導航教程	Tutorial introducing the QML Maps Types

插件參考和參數

Information about plugins, important notes on their usage, parameters that can be provided to influence their behavior.

Qt Location Items Overlay Plugin	Provides an empty map intended to be used as background for an overlay layers for map items.
Qt Location Mapbox Plugin	Uses Mapbox for location services.
Qt Location 開放式街道地圖插件	Uses Open Street Map and related services.

實現新的後端和移植

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 變化	Information about porting from Qt 5 to Qt 6

許可和歸屬

Qt Location 在商業許可下是可用的來自 Qt 公司。此外，它是可用的根據 GNU LGPL (次一般公共許可) 第 3 版，或 GNU GPL (一般公共許可) 第 2 版。見 Qt 許可進一步瞭解細節。

此外，Qt Location 潛在包含的第 3 方模塊遵循下列準許許可：