1.调用google地图工程文件
QT +=webkit QT +=webkitwidgets QT += core gui greaterThan(QT_MAJOR_VERSION, 4): QT += widgets TARGET = googlemap TEMPLATE = app SOURCES += main.cpp\ mainwindow.cpp HEADERS += mainwindow.h FORMS += mainwindow.ui RESOURCES += \ google.qrc
2.mainwindow头文件
#ifndef MAINWINDOW_H #define MAINWINDOW_H #include<QMainWindow> #include<QtWebKit> #include<QtWebKitWidgets/QtWebKitWidgets> #include<QtWebKitWidgets/QWebView> #include<QFile> #include<QMessageBox> #include<QTextStream> #include<QtWebKitWidgets/QWebFrame> namespace Ui { class MainWindow; } class MainWindow : public QMainWindow { Q_OBJECT public: explicit MainWindow(QWidget *parent = 0); ~MainWindow(); private slots: void on_webView_loadFinished(bool arg1); private: Ui::MainWindow *ui; QString buf; QString s_longitude; QString s_latitude; }; #endif // MAINWINDOW_H
3 mianwindow源文件
#include "mainwindow.h" #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); s_longitude = "23.2706716"; s_latitude = "113.2931106"; QFile file("E:/QtCreator/Qt5.1.1/Qtlianxi/googlemap/google.html"); if (! file.open(QIODevice::ReadOnly)) {//进行判断 QMessageBox::information(NULL, QObject::tr("Unable to open file"), file.errorString()); } ui->webView->settings()->setAttribute(QWebSettings::PluginsEnabled, true); ui->webView->settings()->setAttribute(QWebSettings::JavascriptEnabled, true); ui->webView->settings()->setAttribute(QWebSettings::DeveloperExtrasEnabled, true); ui->webView->settings()->setAttribute(QWebSettings::JavascriptCanOpenWindows, true); ui->webView->settings()->setAttribute(QWebSettings::JavaEnabled, true); QTextStream out(&file); QString output_file = out.readAll(); ui->webView->setHtml(output_file);//显示网页内容 } MainWindow::~MainWindow() {delete ui;} void MainWindow::on_webView_loadFinished(bool arg1) { QWebFrame *qframe = ui->webView->page()->mainFrame(); float longitude = s_longitude.toFloat(); float latitude = s_latitude.toFloat(); buf = QString("Open(%1, %2, %3);").arg(longitude).arg(latitude).arg(QString("\"center\"")); qframe->evaluateJavaScript(buf); ui->label->setText(s_longitude); ui->label_2->setText(s_latitude);
}
4.mianwindow的ui文件
5.html文件
<!DOCTYPE html>
<html>
<head>
<title>Google Maps JavaScript API v3 Example: Map Simple</title>
<meta name="viewport"
content="width=device-width, initial-scale=1.0, user-scalable=no">
<meta charset="UTF-8">
<style type="text/css">
html, body, #map_canvas {
margin: 0;
padding: 0;
height: 100%;
}
</style>
<script type="text/javascript"
src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
var map;
function initialize() {
var myOptions = {
zoom: 8,
center: new google.maps.LatLng(23.271016, 113.295088),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById('map_canvas'),
myOptions);
Open(x,y,"center");
}
function Open (x,y, text)
{
var myLatlng = new google.maps.LatLng(x,y);
map.setCenter (myLatlng, 15);
var marker = new google.maps.Marker({
position: myLatlng,
title:text
});
marker.setMap(map);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="map_canvas"></div>
</body>
</html>
6.出现的问题
有时候能够正常显示地图,再不改变任何的情况下有时候有不能显示出地图
