我坚持在谷歌地图上加载2000个标记的性能问题。这个问题概述可以在很多地方找到,但仍然无法为我找出问题所在。
所以,问题简而言之:谷歌地图初始化挂起浏览器10-20秒。
环境:
标记设置代码:
function showMarkers(scope,data) {
var locations = data;
console.log("Starting markers setup: ", new Date());
for(var i = 0; i < locations.length; i++) {
var MarkerImage = '/img/reasestate.png';
markers[i] = new google.maps.Marker({
position: {lat:locations[i].latitude, lng:locations[i].longtitude},
map: map,
id: locations[i].id,
icon: MarkerImage
});
var infowindow = new google.maps.InfoWindow();
var contentString = '<infowindow></infowindow>';
var compiled = $compile(contentString)(scope);
google.maps.event.addListener(markers[i], 'click', (function(i, scope) {
return function(){
scope.placeInfo = null;
//for search around
scope.condo_LatLng = new google.maps.LatLng(locations[i].latitude,locations[i].longtitude);
//update scope
scope.$apply();
//////////////////
///INFOWINDOW SETUP
///////////////////
//you can change url to your url . '/maps/api/getcondo?CondoID='+scope.place.id'
$http.get('/maps/api/condo/items?CondoID='+locations[i].id).then(function(success) {
//a bit of additional received data processing, not important.
}, function(error) {
}).finally(function() {})
};
})(i, scope, locations[i]));
}
setClustering(markers);
console.log("Finished markers setup: ", new Date());
/////////////
///context menu
////////////
var menuStyle = {
menu: 'context_menu'
//menuSeparator: 'context_menu_separator',
//menuItem: 'context_menu_item'
};
var contextMenuOptions = {
classNames: menuStyle,
menuItems: [
{ label:'Add your condo...', id:'menu_option1',
className: 'menu_item', eventName:'option1_clicked' },
{ label:'Exit', id:'menu_option2',
className: 'menu_item', eventName:'option2_clicked' }
],
pixelOffset: new google.maps.Point(10, -5),
zIndex: 5
};
var contextMenu = new ContextMenu(map, contextMenuOptions);
google.maps.event.addListener(contextMenu, 'menu_item_selected',
function(latLng, eventName, source){
switch(eventName){
case 'option1_clicked':
createDraggableMarker(latLng);
break;
case 'option2_clicked':
// do something else
break;
default: break;
}
});
google.maps.event.addListener(map, 'rightclick', function(mouseEvent) {
contextMenu.show(mouseEvent.latLng, map);
});
}
function setClustering(markers){
var mcOptions = {gridSize: 150};
mc = new MarkerClusterer(map,markers, mcOptions);
}
在console.out上获取此内容:
Starting markers setup: Sun Jun 19 2016 16:43:57
jsAllMain.js:240 Finished markers setup: Sun Jun 19 2016 16:43:57
jsAllMain.js:256 Show markers method done at: Sun Jun 19 2016 16:43:57
jsAllMain.js:256 Initialize searchmap done at: Sun Jun 19 2016 16:43:57
但是在我在console.out中得到这个之后,浏览器会再挂10-20秒,直到它显示带有标记的地图。
UPDATE:问题在于AngularJS绑定处理(infowindow指令)。知道怎么处理吗?
答案 0 :(得分:1)
解决方案:将AngularJS指令初始化放在click
事件侦听器中。
google.maps.event.addListener(markers[i], 'click', (function(i, scope) {
return function(){
var infowindow = new google.maps.InfoWindow();
var contentString = '<infowindow></infowindow>';
var compiled = $compile(contentString)(scope);
scope.placeInfo = null;
//for search around
scope.condo_LatLng = new google.maps.LatLng(locations[i].latitude,locations[i].longtitude);
//update scope
scope.$apply();
//////////////////
///INFOWINDOW SETUP
///////////////////
//you can change url to your url . '/maps/api/getcondo?CondoID='+scope.place.id'
$http.get('/maps/api/condo/items?CondoID='+locations[i].id).then(function(success) {
//setup infowindow
infowindow.close();
infowindow = new google.maps.InfoWindow({
id: markers[i].id,
content:compiled[0],
position:new google.maps.LatLng(locations[i][1],locations[i][2])
});
//infowindow.setContent(compiled[0]);
infowindow.open(map, markers[i]);
}, function(error) {
}).finally(function() {})
};
})(i, scope, locations[i]));
答案 1 :(得分:1)
我还没有使用Angular,所以我无法帮助你。但作为一般规则,我建议您花一些时间在服务器端进行群集,然后不惜一切代价加载您提到的所有丰富环境,尽可能充分利用它们,仅在用户请求时可用。这需要一些工作,但如果你的应用程序有计划增加其标记人口,将在以后欣赏它。在聚类算法的情况下,我发现这个StackOverflow参考希望它可以帮助你 Server-side clustering for google maps api v3