日志

GOOGLE MAP的开发

已有 2988 次阅读| 2012-9-6 13:43 |个人分类:上位机软件

老API (API V2，The V2 API will continue to work until May 19, 2013)地址：

https://developers.google.com/maps/documentation/javascript/v2/reference

新API(API3) 地址：https://developers.google.com/maps/documentation/javascript/reference#Map

例程：

C#部分

===============================================

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using System.Security;
using System.Security.Permissions;

namespace Google_Map_Interface
{
    //web访问winform时设置权限
    [PermissionSetAttribute(SecurityAction.LinkDemand, Name = "FullTrust")]
    [System.Runtime.InteropServices.ComVisibleAttribute(true)]

    public partial class Form1 : Form
    {
        private List<double> Latitudes = new List<double>();
        private List<double> Longitudes = new List<double>();

        public Form1()
        {
            InitializeComponent();
            webBrowser1.Navigate(new Uri("file:///D:\\My Documents\\Visual Studio 2010\\Projects\\Google_Map_Interface\\Google_Map_Interface\\html_src\\GoogleMapGPS.html"));
            webBrowser1.ObjectForScripting = this;
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            LoadPoints();
        }
        /// <summary>
        /// 加载坐标点
        /// </summary>
        private void LoadPoints()
        {
            string points = "28.338464,113.089614;28.438464,113.089614;";

            string[] coordXY = points.Split(";".ToCharArray());

            foreach (string pt in coordXY)
            {
                string[] xyCoord = pt.Split(",".ToCharArray());

                Latitudes.Add(double.Parse(xyCoord[0]));

                Longitudes.Add(double.Parse(xyCoord[1]));
            }
        }

        /// <summary>
        /// winForm调用JS的的方法
        /// </summary>
        /// <param name="jsFunction">JS函数</param>
        /// <param name="jsParameter1">函数中第一个参数</param>
        /// <param name="jsParameter2">函数中第二个参数</param>
        private void callJsMethod(string jsFunction, double jsParameter1, double jsParameter2)
        {
            webBrowser1.Document.InvokeScript(jsFunction, new object[] { jsParameter1, jsParameter2 });
        }

        private void btnStart_Click(object sender, EventArgs e)
        {
            curPointCount = 0;
            trackTimer.Interval = 1000;
            trackTimer.Enabled = true;
            trackTimer.Tick += new EventHandler(trackTimer_Tick);
        }

        private void btnStop_Click(object sender, EventArgs e)
        {
            trackTimer.Enabled = false;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            double lati = Convert.ToDouble(textBox1.Text);            //纬度

double longti = Convert.ToDouble(textBox2.Text); //经度

callJsMethod("SetLocation", lati, longti);
}

        private int curPointCount = 0;//当前的坐标点
        private void trackTimer_Tick(object sender, EventArgs e)
        {
            if (curPointCount < Latitudes.Count)
            {
                callJsMethod("SetLocation", Latitudes[curPointCount], Longitudes[curPointCount]);
                curPointCount++;
            }
            else
            {
                trackTimer.Enabled = false;
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            callJsMethod("DelAllLocation", 1, 1);
        }

}
}

HTML部分(JS)

===============================================

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml">
<head>
    <meta. http-equiv="content-type" content="text/html; charset=utf-8"/>
    <title>Google Maps API Sample</title>
    <script. src="http://maps.google.com/maps?file=api&v=2&sensor=false&key=ABQIAAAAsb1IPZFqurjmMaY5UTNvpBQaQ9fcjdeAB__afRoy5udx13-bRxS7ayw4JvJ-bv4PmD7koSQeuI6dfA" type="text/javascript"></script>
    <script. type="text/javascript">
var map = null;

    function initialize() {
      if (GBrowserIsCompatible())
      {
        map = new GMap2(document.getElementById("google_map"));
  map.addControl(new GLargeMapControl());                 //增加导航控件
  map.addControl(new GScaleControl());                    //增加比例尺控件
  map.addControl(new GMapTypeControl());                  //创建可切换地图
  map.addControl(new GOverviewMapControl());              //增加鹰眼控件
        map.setCenter(new GLatLng(28.238464,113.089614), 15);   //13表示比例尺等级
  map.enableDoubleClickZoom();                            //允许双击缩放
  map.enableScrollWheelZoom();                            //允许滚轮缩放

     //var polyline = new GPolyline([new GLatLng(22.531353, 113.94018),new GLatLng(22.551353, 113.94018)], "#ff0000", 10);
        //map.addOverlay(polyline);
      }
    }

function SetLocation(strVal1, strVal2)                     //播放器中自动调用该函数
{
  if(strVal1!=0 && strVal2!=0)
  {
   //map.setCenter(new GLatLng(strVal1, strVal2));
   point = new GLatLng(strVal1, strVal2);
   map.addOverlay(new GMarker(point));
  }
  else
  {
   map.clearOverlays();
  }
}

function DelAllLocation(strVal1, strVal2)                     //播放器中自动调用该函数
{
  map.clearOverlays();
}

    </script>
</head>
<body nload="initialize()" nunload="GUnload()" style="font-family: Arial;border: 0 none;">
    <div id="google_map" style="width: 400px; height: 428px"></div>
</body>
</html>