使用标记在响应式调整大小的Google地图中心

Question

我正在尝试让Google地图在响应时调整其中心位置.

我已经设法将地图放到中心,但无法弄清楚如何将我的标记添加回JS以使其成为中心.我正在使用此处的代码进行地图居中... 谷歌地图响应调整大小

var map; //<-- This is now available to both event listeners and the initialize() function
function initialize() {
    var mapOptions = {
        center: new google.maps.LatLng(LAT,LNG),
        zoom: 10,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        mapTypeControl: false,
        scrollwheel: false,
        keyboardShortcuts: false,
    };

map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);}

google.maps.event.addDomListener(window, 'load', initialize);

google.maps.event.addDomListener(window, "resize", function() {
    var center = map.getCenter();
    google.maps.event.trigger(map, "resize");
    map.setCenter(center); 
});

我用来使地图居中的代码在上面.我也有下面的标记代码,但我不知道如何添加它以使其保持其中心.

var marker = new google.maps.Marker({
        position: new google.maps.LatLng(LAT,LNG),
        map: map,
        title: 'Title',
        animation: google.maps.Animation.DROP,
        })
    }

任何人都可以帮忙吗？

Answer 1

这是获得您想要做的第一步:

var map; //<-- This is now available to both event listeners and the initialize() function
var mapCenter; // Declare a variable to store the center of the map
var centerMarker; // declare your marker

function initialize() {
    var mapOptions = {
        center: new google.maps.LatLng(LAT,LNG),
        zoom: 10,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        mapTypeControl: false,
        scrollwheel: false,
        keyboardShortcuts: false,
    };

    map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);

    // Create a new marker and add it to the map
    centerMarker = new google.maps.Marker({
        position: new google.maps.LatLng(LAT,LNG),
        map: map,
        title: 'Title',
        animation: google.maps.Animation.DROP
    });

    mapCenter = map.getCenter(); // Assign the center of the loaded map to the valiable
}



google.maps.event.addDomListener(window, 'load', initialize);

google.maps.event.addDomListener(window, "resize", function() {

    // Here you set the center of the map based on your "mapCenter" variable
    map.setCenter(mapCenter); 
});

编辑:基于@Chad Killingsworth评论:您可能希望向地图添加"空闲"事件处理程序以设置mapCenter变量.你可以这样做:

google.maps.event.addListener(map,'idle',function(event) {
    mapCenter = map.getCenter();
});

来自doc的'idle'事件的描述:

平移或缩放后地图变为空闲时会触发此事件.