javascript - 从map.data类获取标记使用geojson谷歌地图

Question

首先，我从 geojson 启动标记，如果我想将标记用于监听器/操作，如何获取标记？

这是我的脚本

var map;

function initMap() {
    //makes map
    map = new google.maps.Map(document.getElementById('map'), {
        center: {lat: -6.9034482, lng: 107.6081381},
        zoom: 9,
        styles: [{"featureType":"water","stylers":[{"saturation":43},{"lightness":-11},{"hue":"#0088ff"}]},{"featureType":"road","elementType":"geometry.fill","stylers":[{"hue":"#ff0000"},{"saturation":-100},{"lightness":99}]},{"featureType":"road","elementType":"geometry.stroke","stylers":[{"color":"#808080"},{"lightness":54}]},{"featureType":"landscape.man_made","elementType":"geometry.fill","stylers":[{"color":"#ece2d9"}]},{"featureType":"poi.park","elementType":"geometry.fill","stylers":[{"color":"#ccdca1"}]},{"featureType":"road","elementType":"labels.text.fill","stylers":[{"color":"#767676"}]},{"featureType":"road","elementType":"labels.text.stroke","stylers":[{"color":"#ffffff"}]},{"featureType":"poi","stylers":[{"visibility":"off"}]},{"featureType":"landscape.natural","elementType":"geometry.fill","stylers":[{"visibility":"on"},{"color":"#b8cb93"}]},{"featureType":"poi.park","stylers":[{"visibility":"on"}]},{"featureType":"poi.sports_complex","stylers":[{"visibility":"on"}]},{"featureType":"poi.medical","stylers":[{"visibility":"on"}]},{"featureType":"poi.business","stylers":[{"visibility":"simplified"}]}]
        });

    //load marker from geojson
    map.data.loadGeoJson('<?php echo base_url().'index.php/json_site/geojsongetmap'?>');

    // set style marker
    map.data.setStyle(function(feature){
        var tit = feature.getProperty('nm_site');
        return{
            title: tit,
            icon: '<?php echo base_url()?>assets/images/mark3.png'
        };
    });

    //marker event
    map.data.addListener(marker, 'click', function(event) {
       map.setZoom(11);
       map.setCenter(marker.getPosition());  // I need to get the position of the marker who i clicked

    });
}

如果我从 geojson 启动标记，如何创建 Action 监听器？ 以及如何获取 map 中存在的标记？

请帮助我，任何建议将不胜感激

谢谢

Answer 1

google.maps.Data.Point 的实例类并不完全是传统 google.maps.Marker 对象的直接替代品。对于初学者来说，它们是抽象数据，不依赖于特定的表示。由家长决定google.maps.Data层来决定如何绘制它们。

但是，您仍然可以捕获事件，但需要注意的是，单击发生在数据层上，该数据层接收 mouseEvent 作为参数。该参数包含您刚刚单击的功能。

这意味着您需要声明:

google.maps.event.addListener(map.data,'click',function(mouseEvent) {
    var clickedFeature = mouseEvent.feature,
        featureGeometry = clickedFeature.getGeometry(),
        featurePosition = featureGeometry.get();

    map.setCenter(featurePosition); 

});

请考虑到，通过数据层摄取 geoJson 不仅会产生点几何图形。如果您混合使用点、多边形和线串，则当您调用其 get 方法时，与点不同的任何内容都不会返回 latLng 对象。