在Google地图上移动Google地图标记自动完成
问题描述：
我目前有一张地图在用户地理位置上显示一个标记。我有一个文本输入字段设置为自动完成位置。当用户搜索城市名称时，会在该位置放置一个新标记。但是，旧的凝胶定位标记仍然存在。我想删除旧的标记或移动它，因此地图上只有一个标记。我怎样才能做到这一点？在Google地图上移动Google地图标记自动完成
这里是我的代码：
<html>
<head>
<script>
var map;
function initialize() {
var mapOptions = {
zoom: 12
};
map = new google.maps.Map(document.getElementById('map-canvas'),
mapOptions);
// Get GEOLOCATION
if(navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
var pos = new google.maps.LatLng(position.coords.latitude,
position.coords.longitude);
map.setCenter(pos);
var marker = new google.maps.Marker({
position: pos,
map: map,
draggable:true
});
}, function() {
handleNoGeolocation(true);
});
} else {
// Browser doesn't support Geolocation
handleNoGeolocation(false);
}
function handleNoGeolocation(errorFlag) {
if (errorFlag) {
var content = 'Error: The Geolocation service failed.';
} else {
var content = 'Error: Your browser doesn\'t support geolocation.';
}
var options = {
map: map,
position: new google.maps.LatLng(60, 105),
content: content
};
map.setCenter(options.position);
}
// get places auto-complete when user type in location-text-box
var input = /** @type {HTMLInputElement} */(
document.getElementById('location-text-box'));
var autocomplete = new google.maps.places.Autocomplete(input);
autocomplete.bindTo('bounds', map);
var infowindow = new google.maps.InfoWindow();
var marker = new google.maps.Marker({
map: map,
anchorPoint: new google.maps.Point(0, -29),
draggable:true
});
google.maps.event.addListener(autocomplete, 'place_changed', function() {
infowindow.close();
marker.setVisible(false);
var place = autocomplete.getPlace();
if (!place.geometry) {
return;
}
// If the place has a geometry, then present it on a map.
if (place.geometry.viewport) {
map.fitBounds(place.geometry.viewport);
} else {
map.setCenter(place.geometry.location);
map.setZoom(17); // Why 17? Because it looks good.
}
marker.setIcon(/** @type {google.maps.Icon} */({
url: place.icon,
size: new google.maps.Size(71, 71),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(17, 34),
scaledSize: new google.maps.Size(35, 35)
}));
marker.setPosition(place.geometry.location);
marker.setVisible(true);
var address = '';
if (place.address_components) {
address = [
(place.address_components[0] && place.address_components[0].short_name || ''),
(place.address_components[1] && place.address_components[1].short_name || ''),
(place.address_components[2] && place.address_components[2].short_name || '')
].join(' ');
}
});
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div>
<input type="text" id="location-text-box">
<div id="map-canvas"></div>
</div>
</body>
</html>
答
让你的标记全球性的，无论是隐藏它或将它移到新位置
工作代码片段：
var map;
var marker;
function initialize() {
var mapOptions = {
zoom: 12
};
map = new google.maps.Map(document.getElementById('map-canvas'),
mapOptions);
// Get GEOLOCATION
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
var pos = new google.maps.LatLng(position.coords.latitude,
position.coords.longitude);
map.setCenter(pos);
marker = new google.maps.Marker({
position: pos,
map: map,
draggable: true
});
}, function() {
handleNoGeolocation(true);
});
} else {
// Browser doesn't support Geolocation
handleNoGeolocation(false);
}
function handleNoGeolocation(errorFlag) {
if (errorFlag) {
var content = 'Error: The Geolocation service failed.';
} else {
var content = 'Error: Your browser doesn\'t support geolocation.';
}
var options = {
map: map,
position: new google.maps.LatLng(60, 105),
content: content
};
map.setCenter(options.position);
marker = new google.maps.Marker({
position: options.position,
map: map,
draggable: true
});
}
// get places auto-complete when user type in location-text-box
var input = /** @type {HTMLInputElement} */
(
document.getElementById('location-text-box'));
var autocomplete = new google.maps.places.Autocomplete(input);
autocomplete.bindTo('bounds', map);
var infowindow = new google.maps.InfoWindow();
marker = new google.maps.Marker({
map: map,
anchorPoint: new google.maps.Point(0, -29),
draggable: true
});
google.maps.event.addListener(autocomplete, 'place_changed', function() {
infowindow.close();
marker.setVisible(false);
var place = autocomplete.getPlace();
if (!place.geometry) {
return;
}
// If the place has a geometry, then present it on a map.
if (place.geometry.viewport) {
map.fitBounds(place.geometry.viewport);
} else {
map.setCenter(place.geometry.location);
map.setZoom(17); // Why 17? Because it looks good.
}
marker.setIcon(/** @type {google.maps.Icon} */ ({
url: place.icon,
size: new google.maps.Size(71, 71),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(17, 34),
scaledSize: new google.maps.Size(35, 35)
}));
marker.setPosition(place.geometry.location);
marker.setVisible(true);
var address = '';
if (place.address_components) {
address = [
(place.address_components[0] && place.address_components[0].short_name || ''), (place.address_components[1] && place.address_components[1].short_name || ''), (place.address_components[2] && place.address_components[2].short_name || '')
].join(' ');
}
});
}
google.maps.event.addDomListener(window, 'load', initialize);html,
body,
#map-canvas {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}<script src="https://maps.googleapis.com/maps/api/js?libraries=geometry,places"></script>
<div style="height:100%; width:100%">
<input type="text" id="location-text-box" />
<div id="map-canvas"></div>
</div>+0
我该怎么办这个？对不起，我对JavaScript很陌生。在类似问题中使用的示例与我的代码无关，我不知道如何合并它。谢谢 – xslibx 2015-02-08 20:37:37
+0
这就是我正在寻找的...有点补充.......我怎样才能访问和保存坐标，无论何时用户移动标记？ – 2015-08-04 05:42:57
+0
这是另一个问题。你找过重复的东西吗？ – geocodezip 2015-08-04 09:25:30
类似的问题：[使用Google Maps API进行地理编码 - updat现有的标记，而不是添加另一个]（http://stackoverflow.com/questions/12628994/geocoding-with-google-maps-api-updating-existing-marker-rather-than-adding-ano） – geocodezip 2015-02-08 19:32:57