Selamat siang para pembaca setia cah biyen, kali ini saya akan share tutorial cara share lokasi di google maps, fungsi dari share lokasi ini untuk mendapatkan lokasi anda pada saat ini.
biasanya mendapatkan lokasi pada saat ini anda menggunakan smartphone dengan mengaktifkan GPS agar lokasi anda bisa di akases, tapi kali ini saya menggunakan code dari javascript untuk mendapatkan koordinat pada saat ini dan menggunakan browser untuk menampilkan hasil dari koordinat yang di dapatkan di dalam peta
ok kita langsung saya ke pembahasan, pertama sama seperti dalam tutorial sebelum sebelumnya butlah projek dengan nama terserah anda, kemudian salin kode berikut dan simpan dengan nama geo.js

//****NOTE*****: SEE THIS NOTE REGARDING the 404
//http://code.google.com/p/geo-location-javascript/issues/detail?id=48

// Copyright 2007, Google Inc.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//  1. Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//  2. Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//  3. Neither the name of Google Inc. nor the names of its contributors may be
//     used to endorse or promote products derived from this software without
//     specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Sets up google.gears.*, which is *the only* supported way to access Gears.
//
// Circumvent this file at your own risk!
//
// In the future, Gears may automatically define google.gears.* without this
// file. Gears may use these objects to transparently fix bugs and compatibility
// issues. Applications that use the code below will continue to work seamlessly
// when that happens.

(function() {
  // We are already defined. Hooray!
  if (window.google && google.gears) {
    return;
  }

  var factory = null;

  // Firefox
  if (typeof(GearsFactory)!= 'undefined') {
    factory = new GearsFactory();
  } else {
    // IE
    try {
      factory = new ActiveXObject('Gears.Factory');
      // privateSetGlobalObject is only required and supported on IE Mobile on
      // WinCE.
      if (factory.getBuildInfo().indexOf('ie_mobile') != -1) {
        factory.privateSetGlobalObject(this);
      }
    } catch (e) {
      // Safari
      if ((typeof(navigator.mimeTypes) != 'undefined')
           && navigator.mimeTypes["application/x-googlegears"]) {
        factory = document.createElement("object");
        factory.style.display = "none";
        factory.width = 0;
        factory.height = 0;
        factory.type = "application/x-googlegears";
        document.documentElement.appendChild(factory);
        if(factory && (typeof(factory.create) == 'undefined')) {
          // If NP_Initialize() returns an error, factory will still be created.
          // We need to make sure this case doesn't cause Gears to appear to
          // have been initialized.
          factory = null;
        }
      }
    }
  }

  // *Do not* define any objects if Gears is not installed. This mimics the
  // behavior of Gears defining the objects in the future.
  if (!factory) {
    return;
  }

  // Now set up the objects, being careful not to overwrite anything.
  //
  // Note: In Internet Explorer for Windows Mobile, you can't add properties to
  // the window object. However, global objects are automatically added as
  // properties of the window object in all browsers.
  if (!window.google) {
    google = {};
  }

  if (!google.gears) {
    google.gears = {factory: factory};
  }
})();

//
//geo-location-javascript v0.4.8
//http://code.google.com/p/geo-location-javascript/
//
//Copyright (c) 2009 Stan Wiechers
//Licensed under the MIT licenses.
//
//Revision: $Rev: 81 $: 
//Author: $Author: whoisstan $:
//Date: $Date: 2012-04-17 17:50:53 -0400 (Tue, 17 Apr 2012) $:    
//
var bb_success;
var bb_error;
var bb_blackberryTimeout_id=-1;

function handleBlackBerryLocationTimeout()
{
    if(bb_blackberryTimeout_id!=-1)
    {
        bb_error({message:"Timeout error", code:3});
    }
}
function handleBlackBerryLocation()
{
  clearTimeout(bb_blackberryTimeout_id);
  bb_blackberryTimeout_id=-1;
  if (bb_success && bb_error)
  {
    if(blackberry.location.latitude==0 && blackberry.location.longitude==0)
    {
      //http://dev.w3.org/geo/api/spec-source.html#position_unavailable_error
      //POSITION_UNAVAILABLE (numeric value 2)
      bb_error({message:"Position unavailable", code:2});
    }
    else
    {  
      var timestamp=null;
      //only available with 4.6 and later
      //http://na.blackberry.com/eng/deliverables/8861/blackberry_location_568404_11.jsp
      if (blackberry.location.timestamp)
      {
        timestamp=new Date(blackberry.location.timestamp);
      }
      bb_success({timestamp:timestamp, coords: {latitude:blackberry.location.latitude,longitude:blackberry.location.longitude}});
    }
    //since blackberry.location.removeLocationUpdate();
    //is not working as described http://na.blackberry.com/eng/deliverables/8861/blackberry_location_removeLocationUpdate_568409_11.jsp
    //the callback are set to null to indicate that the job is done

    bb_success = null;
    bb_error = null;
  }
}

var geo_position_js=function() {
  var pub = {};
  var provider=null;
  var u="undefined";

  pub.showMap = function(latitude,longitude)
  {
   if(typeof(blackberry)!=u)
   {
    blackberry.launch.newMap({"latitude":latitude*100000,"longitude":-longitude*100000});
   }
   else
   {
    window.location="http://maps.google.com/maps?q=loc:"+latitude+","+longitude;
   }
  }


  pub.getCurrentPosition = function(success,error,opts)
  {
    provider.getCurrentPosition(success, error,opts);
  }
  

  pub.init = function()
  {
    try
    {
      if (typeof(geo_position_js_simulator)!=u)
      {
        provider=geo_position_js_simulator;
      }
      else if (typeof(bondi)!=u && typeof(bondi.geolocation)!=u)
      {
        provider=bondi.geolocation;
      }
      else if (typeof(navigator.geolocation)!=u)
      {
        provider=navigator.geolocation;
        pub.getCurrentPosition = function(success, error, opts)
        {
          function _success(p)
          {
            //for mozilla geode,it returns the coordinates slightly differently
            if(typeof(p.latitude)!=u)
            {
              success({timestamp:p.timestamp, coords: {latitude:p.latitude,longitude:p.longitude}});
            }
            else
            {
              success(p);
            }
          }
          provider.getCurrentPosition(_success,error,opts);
        }
      }
      else if(typeof(window.blackberry)!=u && blackberry.location.GPSSupported)
      {

        // set to autonomous mode
        if(typeof(blackberry.location.setAidMode)==u)
        {
         return false;         
        }
        blackberry.location.setAidMode(2);
        //override default method implementation
        pub.getCurrentPosition = function(success,error,opts)
        {
          //alert(parseFloat(navigator.appVersion));
          //passing over callbacks as parameter didn't work consistently
          //in the onLocationUpdate method, thats why they have to be set
          //outside
          bb_success=success;
          bb_error=error;
          //function needs to be a string according to
          //http://www.tonybunce.com/2008/05/08/Blackberry-Browser-Amp-GPS.aspx
          if(opts['timeout'])  
          {
            bb_blackberryTimeout_id=setTimeout("handleBlackBerryLocationTimeout()",opts['timeout']);
          }
          else
          //default timeout when none is given to prevent a hanging script
          {
           bb_blackberryTimeout_id=setTimeout("handleBlackBerryLocationTimeout()",60000);
          }          
          blackberry.location.onLocationUpdate("handleBlackBerryLocation()");
          blackberry.location.refreshLocation();
        }
        provider=blackberry.location;    
      }
       else if(typeof(window.google)!="undefined" && typeof(google.gears)!="undefined")
      {
        provider=google.gears.factory.create('beta.geolocation');
        pub.getCurrentPosition = function(successCallback, errorCallback, options)
        {
          function _successCallback(p)
          {
            if(typeof(p.latitude)!="undefined")
            {
              successCallback({timestamp:p.timestamp, coords: {latitude:p.latitude,longitude:p.longitude}});
            }
            else
            {
              successCallback(p);
            }
          }
          provider.getCurrentPosition(_successCallback,errorCallback,options);
        }

      }
      else if ( typeof(Mojo) !=u && typeof(Mojo.Service.Request)!="Mojo.Service.Request")
      {
        provider=true;
        pub.getCurrentPosition = function(success, error, opts)
        {

        parameters={};
        if(opts)
        {
           //http://developer.palm.com/index.php?option=com_content&view=article&id=1673#GPS-getCurrentPosition
           if (opts.enableHighAccuracy && opts.enableHighAccuracy==true)
           {
            parameters.accuracy=1;
           }
           if (opts.maximumAge)
           {
            parameters.maximumAge=opts.maximumAge;
           }
           if (opts.responseTime)
           {
            if(opts.responseTime>5)
            {
              parameters.responseTime=1;
            }
            else if (opts.responseTime>20)
            {
              parameters.responseTime=2;
            }
            else
            {
              parameters.timeout=3;
            }
           }
        }


        r=new Mojo.Service.Request('palm://com.palm.location', {
           method:"getCurrentPosition",
           parameters:parameters,
           onSuccess: function(p){success({timestamp:p.timestamp, coords: {latitude:p.latitude, longitude:p.longitude,heading:p.heading}});},
           onFailure: function(e){
                if (e.errorCode==1)
                {
                  error({code:3,message:"Timeout"});
                }
                else if (e.errorCode==2)
                {
                  error({code:2,message:"Position unavailable"});
                }
                else
                {
                  error({code:0,message:"Unknown Error: webOS-code"+errorCode});
                }
              }
           });
        }

      }
      else if (typeof(device)!=u && typeof(device.getServiceObject)!=u)
      {
        provider=device.getServiceObject("Service.Location", "ILocation");

        //override default method implementation
        pub.getCurrentPosition = function(success, error, opts)
        {
          function callback(transId, eventCode, result) {
           if (eventCode == 4)
            {
            error({message:"Position unavailable", code:2});
           }
            else
            {
              //no timestamp of location given?
              success({timestamp:null, coords: {latitude:result.ReturnValue.Latitude, longitude:result.ReturnValue.Longitude, altitude:result.ReturnValue.Altitude,heading:result.ReturnValue.Heading}});
            }
          }
        //location criteria
        var criteria = new Object();
        criteria.LocationInformationClass = "BasicLocationInformation";
          //make the call
          provider.ILocation.GetLocation(criteria,callback);
        }
      }

    }
    catch (e){ 
     if(typeof(console)!=u)
     {
      console.log(e);
     }
     return false;
    }
    return  provider!=null;
  }
  return pub;
}();

kode di atas saya dapatkan dari code google
selanjutnya buat file dengan nama index.php dan simpan di dalam projek yang sudah anda buat kemudian salin kode berikut

<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="http://maps.google.com/maps/api/js"></script>
<script type="text/javascript" src="geo.js"></script>
<title>CARA SHARE LOKASI DI GOOGLE MAP</title>
<script type="text/javascript">
window.onload = function() {
 // set info window
 var info_window = new google.maps.InfoWindow();

 // set zoom
 var zoom = 4;

 // set latitude dan longitude
 var pos = new google.maps.LatLng(-3.050444, 116.323242);

 // set opsi peta yang akan di tampilkan
 var options = {
  'center': pos,
  'zoom': zoom,
  'mapTypeId': google.maps.MapTypeId.ROADMAP
 }

 // set peta
 var map = new google.maps.Map(document.getElementById('maps'), options);
 info_window = new google.maps.InfoWindow({
  'content': 'loading...'
 });

 // add event ketika button di klik
 document.getElementsByTagName('button')[0].addEventListener('click', function() {

  // call function geo_position_js
  if (geo_position_js.init()) {
   geo_position_js.getCurrentPosition(show_koordinat, function() {
    alert('Lokasi tidak di temukan');
   }, {'enableHighAccuracy': true});
  } else {
   alert('Lokasi tidak di temukan');
  }
 });
}

// hasil dari geo_position_js
function show_koordinat(response) {
 // set info window
 var info_window = new google.maps.InfoWindow();

 // set zoom
 var zoom = 16;

 // set latitude dan longitude yang dari response yang di dapatkan
 var pos = new google.maps.LatLng(response.coords.latitude, response.coords.longitude);

 // set opsi peta yang akan di tampilkan
 var options = {
  'center': pos,
  'zoom': zoom,
  'mapTypeId': google.maps.MapTypeId.ROADMAP
 }

 // set peta
 var map = new google.maps.Map(document.getElementById('maps'), options);
 info_window = new google.maps.InfoWindow({
  'content': 'loading...'
 }); 

 // ser marker
 var marker = new google.maps.Marker({
  'position': pos,
  'title': 'Posisi kamu disini',
  'animation': google.maps.Animation.BOUNCE
 });
 marker.setMap(map);
}
</script>
</head>
<body>
<div id="maps" style="width: 600px; height: 400px; background-color: #EEE"></div>
<button>SHARE LOKASI</button>
</body>
</html>

selelah itu buka projek yang sudah anda buat, jika tidak terjadi error maka anda akan mendapatkan tampilan dengan peta indonesia, dan ketika button share lokasi diklik maka anda akan mendapatkan pesan persetujuan di pojok kanan atas, jika anda pilih izinkan maka google maps akan mengakses lokasi anda
Ok sampai disini dulu turorial kali ini, selamat mencoba dan semoga bisa bermanfaat