我一直在尝试制作一张可在不同位置显示多个标记的Google地图。此地图连接到存储纬度和经度的数据库。我想制作这张地图,以便我可以更改数据库中的纬度和经度,以便标记可以更新并重新定位到新位置。但我不希望整个地图重新加载,只是数据。这是代码,谢谢你的帮助!
<script type="text/javascript">
//<![CDATA[
var iconBlue = new GIcon();
iconBlue.image = 'mm_20_blue.png';
iconBlue.shadow = 'mm_20_shadow.png';
iconBlue.iconSize = new GSize(16, 25);
iconBlue.shadowSize = new GSize(27.5, 25);
iconBlue.iconAnchor = new GPoint(7.5, 25);
iconBlue.infoWindowAnchor = new GPoint(5, 1);
var iconRed = new GIcon();
iconRed.image = 'mm_20_red.png';
iconRed.shadow = 'mm_20_shadow.png';
iconRed.iconSize = new GSize(16, 25);
iconRed.shadowSize = new GSize(27.5, 25);
iconRed.iconAnchor = new GPoint(7.5, 25);
iconRed.infoWindowAnchor = new GPoint(5, 1);
var customIcons = [];
customIcons["1"] = iconBlue;
customIcons["2"] = iconRed;
function load() {
if (GBrowserIsCompatible()) {
var map = new GMap2(document.getElementById("map"));
map.setUIToDefault();
map.addControl(new GMapTypeControl());
map.setCenter(new GLatLng(34.081187, -83.980721), 8);
geocoder = new GClientGeocoder();
GDownloadUrl("genxml2.php", function(data) {
var xml = GXml.parse(data);
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
var Names = markers[i].getAttribute("Names");
var phoneNum = markers[i].getAttribute("phoneNum");
var gender = markers[i].getAttribute("gender");
var homeAd = markers[i].getAttribute("homeAd");
var lat = markers[i].getAttribute("latitudeE6")
var lng = markers[i].getAttribute("longitudeE6")
var point = new GLatLng(parseFloat(markers[i].getAttribute("latitudeE6")),
parseFloat(markers[i].getAttribute("longitudeE6")));
var marker = createMarker(point, Names, phoneNum, gender, homeAd, lat, lng);
map.addOverlay(marker);
}
}
);
}
}
function createMarker(point, Names, phoneNum, gender, homeAd, lat, lng) {
var marker = new GMarker(point, customIcons[gender]);
place = marker
var html = "<b>Name: " + Names + "</b> <br/>Phone #: " + phoneNum + "</b> <br/>Home Address: " + homeAd + "</b> <br/>Current Address: " + place.address
+ "</b> <br/>Latitude: " + lat + "</b> <br/>Longitude: " + lng;
GEvent.addListener(marker, 'click', function() {
marker.openInfoWindowHtml(html);
});
return marker;
};
//]]>
(代码的某些部分被排除在外,如MD5密钥)
答案 0 :(得分:0)
首先创建一个名为load_marker的函数
将您的代码放入新函数中启动gdownloadurl,并在调用此javascript函数时更改数据时加载标记。您可能需要先清除所有标记。
您也可以在地图事件中重新加载标记。您可以使用两个有用的事件。
drag_end和zoom_changed。你可以通过gmap.registerEvent函数注册这些
编辑:添加代码示例/您的代码应该是这样的。
function load() {
if (GBrowserIsCompatible()) {
var map = new GMap2(document.getElementById("map"));
map.setUIToDefault();
map.addControl(new GMapTypeControl());
map.setCenter(new GLatLng(34.081187, -83.980721), 8);
geocoder = new GClientGeocoder();
}
function load_markers() {
/*clear all*/
map.clearOverlays();
GDownloadUrl("genxml2.php", function(data) {
var xml = GXml.parse(data);
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
var Names = markers[i].getAttribute("Names");
var phoneNum = markers[i].getAttribute("phoneNum");
var gender = markers[i].getAttribute("gender");
var homeAd = markers[i].getAttribute("homeAd");
var lat = markers[i].getAttribute("latitudeE6")
var lng = markers[i].getAttribute("longitudeE6")
var point = new GLatLng(parseFloat(markers[i].getAttribute("latitudeE6")),
parseFloat(markers[i].getAttribute("longitudeE6")));
var marker = createMarker(point, Names, phoneNum, gender, homeAd, lat, lng);
map.addOverlay(marker);
}
}
);
}
}
答案 1 :(得分:0)
您应该切换到Google Maps API v3,其中指针链接到地图而不是相反。另外,您将免费获得一系列有趣的新功能!