google maps in qt

[saitej]

what is the best way to use google maps in qt c++ preferably or qml ?

[QT_QT_QT]

Hi,

You can use the Google Api that had already been provided.

reference:
https://developers.google.com/maps/web-services/overview#find-out-which-api-you-need

[A Former User]

Hi! If you're fine with OpenStreetMap instead of Google Maps then you can use Maps and Navigation (QML).

[SGaist]

Hi,

There's also a forum member that has implemented a backend for it. See this thread

[saitej]

@SGaist

Hi I found this googlemaps plugin link in the thread you sent. As I am quiet new to Qt, could you give some hint on how to use this plugin along with Qtlocation C++.

[A Former User]

@saitej Don't know what you want to do, just as a reminder: "Currently it is not possible to interact with maps via C++".

[saitej]

@Wieland
Hi ..
I want to display the current location as the first step using the googlemaps plugin either in qml or c++ which ever is possible.

[A Former User]

@saitej You can't do this in C++ but QtQuick comes with the easy to use Map type.

[saitej]

@Wieland

I tried the code from the link you had sent but am unable to view any map.
This is my main.qml code. The code doesn’t give an error but displays a blank window.

import QtPositioning 5.5
import QtLocation 5.6
import QtQuick 2.6
import QtQuick.Window 2.2
Window {
    visible: true
    width: 400
    height: 600

    MouseArea {
        anchors.fill: parent
        onClicked: {
            Qt.quit();
        }
    }
    Plugin{
        id:myplugin
        name: "osm"
    }
    Map {
        id: map
        plugin: myplugin
        center {
            latitude: -27
            longitude: 153
        }
        zoomLevel: map.minimumZoomLevel

        gesture.enabled: true
    }


}

[khryleption]

In my case, I used the API QMapControl Under LGPL license.
It's very easy to use.

[A Former User]

@saitej Add anchors.fill: contentItem to your Map item ;-)

[saitej]

Hi
I am having few basic issues with this code. I am unable to display the marker on the map.
Also, where do I write the signal showRoute(startCoordinate,endCoordinate)
It's giving me already declared error

I am used to c++ and I just started to use qml. so the doubts will be pretty basic so please bear with me

import QtPositioning 5.5
import QtLocation 5.6
import QtQuick 2.6
import QtQuick.Window 2.2
import QtQuick.Controls 1.4
import QtQuick.Layouts 1.3

Window {
    visible: true
    width: 400
    height: 600

    MouseArea {
        anchors.fill: parent
        //        onClicked: {
        //            Qt.quit();
        //        }
    }

    //    splitview

    SplitView {
        anchors.fill: parent
        orientation: Qt.Vertical
        //rect1
        Rectangle {
            height: 150
            Layout.maximumHeight:  200
            //               color: "lightblue"

            Label {
                id: label1
                text: "Latitude Start"
                x:0
                y:2

            }
            Label{
                id : label2
                text: "Longitude Start"
                x:0
                y:25
            }

            Label {
                id: label3
                text: "Latitude End"
                x:0
                y:50

            }
            Label{
                id : label4
                text: "Longitude End"
                x:0
                y:75
            }
            //            textinputs
            TextInput {
                //                anchors.fill:
                id: input1
                x:150
                y:2
                font.pixelSize: 12; font.bold: false
                cursorVisible: true
                text:  "12.9716"
                //                acceptableInput:
                validator : RegExpValidator { regExp : /[0-9]+\.[0-9]+/ }
                focus:true
            }
            TextInput {
                //                anchors.fill: contentItem
                id: input2
                x:150
                y:25
                font.pixelSize: 12; font.bold: false
                //                acceptableInput:
                validator : RegExpValidator { regExp : /[0-9]+\.[0-9]+/ }
                //                focus:true
                echoMode: TextInput.Normal
                activeFocusOnTab: true
                text: "77.5946"
            }

            TextInput {
                //                anchors.fill: contentItem
                id: input3
                x:150
                y:50
                font.pixelSize: 12; font.bold: false
                //                acceptableInput:
                validator : RegExpValidator { regExp : /[0-9]+\.[0-9]+/ }
                //                focus:true
                echoMode: TextInput.Normal
                activeFocusOnTab: true
                text: "19.0760"

            }


            TextInput {
                //                anchors.fill: contentItem
                id: input4
                x:150
                y:75
                font.pixelSize: 12; font.bold: false
                //                acceptableInput:
                validator : RegExpValidator { regExp : /[0-9]+\.[0-9]+/ }
                //                focus:true
                echoMode: TextInput.Normal
                activeFocusOnTab: true
                text: "72.8777"

            }

            Button{
                id:goButton
                text : "GO!"
                anchors.horizontalCenter: parent.horizontalCenter
                y: 100
                onClicked: {
                    var startCoordinate = QtPositioning.coordinate(parseFloat(input1.text),
                                                                   parseFloat(input2.text));
                    var endCoordinate = QtPositioning.coordinate(parseFloat(input3.text),
                                                                 parseFloat(input4.text));
                    if (startCoordinate.isValid && endCoordinate.isValid) {

                        goButton.enabled = false;
                        showRoute(startCoordinate,endCoordinate)
                    }

                }

            }
            Plugin{
                id:myplugin
                name: "osm"
            }





        } //rectangle ends here




        Map {
            id: map
            plugin: myplugin
            center {

                //                latitude: 12.9716 //
                //                longitude: 77.5946 //
                latitude :input1.text
                longitude:input2.text

            }
            zoomLevel: 13
            anchors.fill: contentItem
            gesture.enabled: true
            //            property variant location: QtPositioning.coordinate( input1.text, input2.text)
            MapItemView {
                model:PlaceSearchModel
                delegate: MapQuickItem {
                    id : marker
                    coordinate: QtPositioning.coordinate( input1.text, input2.text)

                    anchorPoint.x: image.width * 0.5
                    anchorPoint.y: image.height
                    sourceItem: Image {
                        id: image
                        source: "qrc:/marker.png"

                    }

                }

            }

        }


    }


}

[bahman309]

@saitej
anybody can to used google map api in QML
and used navigation and traffic from google map api ?

[zhangsi]

QWebView::load