我试图在谷歌地图上绘制一组固定标记和用户位置的标记。对于这两组标记我想为标记使用不同的图像,但是会发生一些奇怪的事情:加载页面时,"固定"标记得到正确绘制,但随后立即消失(数组中的最后一个),然后显示用户位置。另外,第一固定位置获取用户位置标记图像,用户定位标记获取固定标记的图像。理想情况下,阵列中的位置将完全绘制(全部4个),并在标记上绘制red_dot.png图像,用户在标记上使用bluedot_retina.png进行定位。
这很奇怪,我正在努力弄清楚根本原因是什么。感谢您对此问题的任何帮助。谢谢!
<script>
var locations = [
['location a', 37.60756088, -122.42793323],
['location b', 37.759736, -122.426957],
['location c', 37.752950, -122.438458],
['location d', 37.763128, -122.457942]
];
var map;
var i;
var marker;
var google_lat = 37.757996;
var google_long = -122.404479;
var myLatlng = new google.maps.LatLng(google_lat, google_long);
//google.maps.visualRefresh = true;
function initialize() {
var mapOptions = {
zoom: 12,
center: myLatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
var image_dot = new google.maps.MarkerImage(
'images/red_dot.png',
null, // size
null, // origin
new google.maps.Point( 8, 8 ), // anchor (move to center of marker)
new google.maps.Size( 8, 8 ) // scaled size (required for Retina display icon)
);
marker = new google.maps.Marker({
flat: true,
position: myLatlng,
icon: image,
optimized: false,
map: map,
visible: true,
title: 'I might be here'
});
setMarkers(map, locations);
} //initialize();
function setMarkers(map, locations) {
for (var i = 0; i < locations.length; i++) {
var beach = locations[i];
var myLatLng1 = new google.maps.LatLng(beach[1], beach[2]);
marker = new google.maps.Marker({
position: myLatLng1,
icon: image_dot,
map: map
});
}
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
<script type="text/javascript">
var Tdata;
var image = new google.maps.MarkerImage(
'images/bluedot_retina.png',
null, // size
null, // origin
new google.maps.Point( 8, 8 ), // anchor (move to center of marker)
new google.maps.Size( 17, 17 ) // scaled size (required for Retina display icon)
);
var userMarker = new google.maps.Marker({icon: image});
//var userMarker = new google.maps.Marker({icon: 'images/bluedot_retina.png'});
$.ajax({
method : "GET",
url: "get_location.php",
success : function(data){
Tdata=JSON.parse(data);
// console.log(data.lat);
console.log(Tdata.lat);
myFunction();
}
});
function myFunction(){
var interval = setInterval(function() {
$.get("get_location.php", function(Tdata) {
var JsonObject= JSON.parse(Tdata);
google_lat = JsonObject.lat;
google_long = JsonObject.long;
console.log(google_lat, google_long);
// $('#data').html('google_lat, google_long');
myLatlng = new google.maps.LatLng(google_lat, google_long);
//marker.setPosition(myLatlng);
userMarker.setPosition(myLatlng);
userMarker.setMap(map);
//map.setCenter(myLatlng);
});
}, 1000);
}
</script>
答案 0 :(得分:1)
marker
是一个全局变量。您将它用于所有位置和用户的位置标记。不要这样做,为这两类标记分配唯一(或本地)名称。
var Tdata;
var userMarker = new google.maps.Marker({icon: URL/to/custom/icon/for/user});
$.ajax({
method : "GET",
url: "get_location.php",
success : function(data){
Tdata=JSON.parse(data);
// console.log(data.lat);
console.log(Tdata.lat);
myFunction();
}
});
function myFunction(){
var interval = setInterval(function() {
$.get("get_location.php", function(Tdata) {
var JsonObject= JSON.parse(Tdata);
google_lat = JsonObject.lat;
google_long = JsonObject.long;
console.log(google_lat, google_long);
// $('#data').html('google_lat, google_long');
myLatlng = new google.maps.LatLng(google_lat, google_long);
userMarker.setPosition(myLatlng);
userMarker.setMap(map);
map.setCenter(myLatlng);
});
}, 1000);
}