我的代码在每个输出位置显示标记,但我想在标记上显示地址。我的意思是当用户点击标记时,地址必须显示在标记上方。如何才能完成此任务?我只有纬度和经度没有解决。
test.php的:
<?php
$sql=<<<EOF
SELECT * from markers;
EOF;
$result = $db->query($sql);
$yourArray = array();
$index = 0;
while($row = $result->fetchArray(SQLITE3_ASSOC) ){
$json[] = array(
'lat' => $row['latitude'],
'lon' => $row['longitude'],
'name' => $row['name']
);
}
$db->close();
?>
<!DOCTYPE html>
<html>
<head>
<style>
#map {
height: 400px;
width: 50%;
}
</style>
</head>
<body>
<h3></h3>
<div id="map" align="left"></div>
<script async defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyDj38Snh4MEIsomOlTZfARryo7V8A_qk9o&callback=initMap">
</script>
<?php json_encode($json, JSON_PRETTY_PRINT) ?>
<script type="text/javascript">
function initMap() {
var locationsJSON = <?php echo json_encode($json, JSON_PRETTY_PRINT) ?>;
var locations = locationsJSON;
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 12,
center: new google.maps.LatLng(31.5546, 74.3572),
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var marker, i;
for (i = 0; i < locations.length; i++) {
console.log(locations[i]);
var myLatLng = new google.maps.LatLng(locations[i].lat, locations[i].lon);
marker = new google.maps.Marker({
position: myLatLng,
map: map
});
}
}
</script>
</body>
</html>
答案 0 :(得分:0)
如果你拥有的是坐标(纬度和经度),你唯一的选择就是使用reverse geocoder:
(来自那个documentation):
术语地理编码通常是指将人类可读地址转换为地图上的位置。进行相反的过程,将地图上的位置转换为人类可读的地址,称为反向地理编码。
但是(除非您发布的代码不是您计划绘制的区域),否则地图区域似乎不会产生可靠的反向地理编码结果。因此,我建议您使用地址和坐标填充数据库。
fiddle using reverse geocoded results in the infowindow
代码段
function initMap() {
var locationsJSON = [
{lat: 31.564614,lon: 74.298718},
{lat: 31.563892,lon: 74.300435},
{lat: 31.565546,lon: 74.297597},
{lat: 31.565332,lon: 74.296744},
{lat: 31.565332,lon: 74.296744},
{lat: 31.565272,lon: 74.297637},
{lat: 31.562347,lon: 74.296712}];
var locations = locationsJSON;
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 12,
center: new google.maps.LatLng(31.5546, 74.3572),
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var geocoder = new google.maps.Geocoder();
var infowindow = new google.maps.InfoWindow();
var marker, i;
for (i = 0; i < locations.length; i++) {
var myLatLng = new google.maps.LatLng(locations[i].lat, locations[i].lon);
marker = new google.maps.Marker({
position: myLatLng,
map: map
});
google.maps.event.addListener(marker, 'click', function(evt) {
var mark = this;
geocoder.geocode({
location: evt.latLng
}, function(results, status) {
if (status == "OK") {
infowindow.setContent(results[0].formatted_address + "<br>" + results[0].geometry.location.toUrlValue(6));
infowindow.open(map, mark);
}
});
});
};
}
google.maps.event.addDomListener(window, "load", initMap);
&#13;
html,
body,
#map {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
&#13;
<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map"></div>
&#13;