我想用可拖动的航点显示多个方向并保存每个航点。
在我的项目中,我可以单击地图来创建路线,生成 wayA 点和 wayB 点并在它们之间绘制路线。所以,我可以制作多条路线。我也可以将它们保存在数据库中。问题是再次在地图上加载这些点,在数据库中获取它们并在地图上绘制所有内容。
我有两个页面,在index.htm上您可以绘制路线并保存它们,在loady.htm上您可以将它们加载到地图上。
我尝试了一些东西但没有成功,我会在这里发布我的尝试。
这是我恢复的 index.htm
var map, ren, ser;
var data = {};
var wayA = [];
var wayB = [];
var directionResult = [];
function goma() <---Initialize
{
google.maps.event.addListener(map, "click", function(event) {
if (wayA.length == wayB.length) {
wayA.push(new google.maps.Marker({
draggable: true,
position: event.latLng,
map: map
}));
} else {
wayB.push(new google.maps.Marker({
draggable: true,
position: event.latLng,
map: map
}));
ren = new google.maps.DirectionsRenderer( {'draggable':true} );
ren.setMap(map);
ren.setPanel(document.getElementById("directionsPanel"));
ser = new google.maps.DirectionsService();
ser.route({ 'origin': wayA[wayA.length-1].getPosition(), 'destination': wayB[wayB.length-1].getPosition(), 'travelMode': google.maps.DirectionsTravelMode.DRIVING},function(res,sts) {
if(sts=='OK') {
directionResult.push(res);
ren.setDirections(res);
} else {
directionResult.push(null);
} })
} }); }
function save_waypoints()
{
var w=[],wp;
var rleg = ren.directions.routes[0].legs[0];
data.start = {'lat': rleg.start_location.lat(), 'lng':rleg.start_location.lng()}
data.end = {'lat': rleg.end_location.lat(), 'lng':rleg.end_location.lng()}
var wp = rleg.via_waypoints
for(var i=0;i<wp.length;i++)w[i] = [wp[i].lat(),wp[i].lng()]
data.waypoints = w;
var str = JSON.stringify(data)
var jax = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP');
jax.open('POST','process.php');
jax.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
jax.send('command=save&inventoresdegara='+str)
jax.onreadystatechange = function(){ if(jax.readyState==4) {
if(jax.responseText.indexOf('bien')+1)alert('Mapa Atualizado !');
else alert(jax.responseText)
}}
}
这是我尝试恢复的 loady.htm
var map, ren, ser;
var data = {};
var wayA = [];
var wayB = [];
var directionResult = [];
function goma() {
ren = new google.maps.DirectionsRenderer( {'draggable':true} );
ren.setMap(map);
ren.setPanel(document.getElementById("directionsPanel"));
ser = new google.maps.DirectionsService();
fetchdata();
function setroute(os)
{
var wp = [];
for(var i=0;i<os.waypoints.length;i++)
wp[i] = {'location': new google.maps.LatLng(os.waypoints[i][0], os.waypoints[i][3]),'stopover':false }
ser.route({ 'origin': wayA[wayA.length-1].setPosition(), 'destination': wayB[wayB.length-1].setPosition(), 'travelMode': google.maps.DirectionsTravelMode.DRIVING},function(res,sts) {
if(sts=='OK') {
directionResult.push(res);
ren.setDirections(res);
} else {
directionResult.push(null);
}
});
}
function fetchdata()
{
var jax = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP');
jax.open('POST','process.php');
jax.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
jax.send('command=fetch')
jax.onreadystatechange = function(){ if(jax.readyState==4) {
try { setroute( eval('(' + jax.responseText + ')') ); }
catch(e){ alert(e); }
}}
}
这是我的 php 文件:
<?
if($_REQUEST['command']=='save')
{
$query = "insert into inventoresdegara set value='$data'";
if(mysql_query($query))die('bien');
die(mysql_error());
}
if($_REQUEST['command']=='fetch')
{
//$query = "select value from inventoresdegara";
$query = "SELECT value FROM inventoresdegara";
if(!($res = mysql_query($query)));
$rs = mysql_fetch_array($res,1);
die($rs['value']);
}
?>
这是我数据库中的图像,您知道信息是如何保存的
我唯一需要做的就是将此值加载到地图中,请帮助我 =)。
谢谢 !
经过我的尝试,loady.htm 是 ser.routes 上的
ser.route({'origin':new google.maps.LatLng(os.start.lat,os.start.lng),
'destination':new google.maps.LatLng(os.end.lat,os.end.lng),
'waypoints': wp,
'travelMode': google.maps.DirectionsTravelMode.DRIVING},function(res,sts) {
if(sts=='OK')ren.setDirections(res);
}