我的代码:
<script
src="http://maps.googleapis.com/maps/api/js">
</script>
<script>
var map;
var myCenter=new google.maps.LatLng(51.508742,-0.120850);
function initialize()
{
var mapProp = {
center:myCenter,
zoom:5,
mapTypeId:google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("googleMap"),mapProp);
google.maps.event.addListener(map, 'click', function(event) {
placeMarker(event.latLng);
});
}
function placeMarker(location) {
var marker = new google.maps.Marker({
position: location,
map: map,
});
var infowindow = new google.maps.InfoWindow({
content: 'Latitude: ' + location.lat() + '<br>Longitude: ' + location.lng()
});
infowindow.open(map,marker);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="googleMap" style="width:500px;height:380px;"></div>
我得到了一个新的标记。如果我再次点击它,我怎么能删除另一个?
顺便说一下:恳求:Google Maps how to get to show only one marker?
想要使用它,但它最令人工作(在控制台中:tCurrentPosition()和watchPosition()在不安全的起源上被弃用,并且将来会删除支持。你应该考虑将应用程序切换到安全的来源,例如作为HTTPS。有关详细信息,请参阅https://goo.gl/rStTGz。)
谢谢:)
答案 0 :(得分:2)
如果您只需要一个标记,只需创建一个并根据需要移动它,就可以选择一个选项。
代码段
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let destinationToFVC:ViewController = self.storyboard!.instantiateViewControllerWithIdentifier("FVCont") as! ViewController
if let indexPath = self.tableView.indexPathForSelectedRow {
let row1 = Int(indexPath.row)
destinationToFVC.currentObject = objects?[row1] as! PFObject!
}
navigationController?.pushViewController(destinationToFVC, animated: true)
}
var map;
var myCenter = new google.maps.LatLng(51.508742, -0.120850);
var marker;
var infowindow;
function initialize() {
var mapProp = {
center: myCenter,
zoom: 5,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("googleMap"), mapProp);
google.maps.event.addListener(map, 'click', function(event) {
placeMarker(event.latLng);
});
}
function placeMarker(location) {
if (!marker || !marker.setPosition) {
marker = new google.maps.Marker({
position: location,
map: map,
});
} else {
marker.setPosition(location);
}
if (!!infowindow && !!infowindow.close) {
infowindow.close();
}
infowindow = new google.maps.InfoWindow({
content: 'Latitude: ' + location.lat() + '<br>Longitude: ' + location.lng()
});
infowindow.open(map, marker);
}
google.maps.event.addDomListener(window, 'load', initialize);
html,
body,
#googleMap {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
答案 1 :(得分:0)
而不是:
google.maps.event.addListener(map, 'click', function(event) {
placeMarker(event.latLng);
});
尝试使用:
google.maps.event.addListener(map, 'click', function(event) {
setMapOnAll(null);
placeMarker(event.latLng);
}
因此,您在点击时删除所有当前标记并在x,y位置添加新标记