如何解决使用弹出窗口在OpenLayers 5上动态显示多个标记
我正在尝试在地图上显示两个已经保存在数组中的标记。我希望标记可以动态显示,并且每个标记都有一个弹出窗口。 这是我在上一个问题中编写和编辑的代码。我没有在地图上显示任何内容,有人可以解决该问题吗?,我尝试了很多事情,但似乎没有任何效果。 我真的是Maps的新手。
/* open street map newest version */
var map = new ol.Map({
target: 'map',// the div id
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
})
],view: new ol.View({
center: ol.proj.fromLonLat([4.35247,52.520008]),zoom: 6,minZoom: 3
})
});
//create an empty vectorSrc
var vectorSource = new ol.source.VectorSource();
var layer = new ol.layer.Vector({
source: vectorSource,style: new ol.style.Style({
image: new ol.style.Icon({
src: 'https://wiki.openstreetmap.org/w/images/0/0c/Hgv.png',//
scale: 0.4 // set the size of the vehicle on the map
})
})
});
for(var i=0; i < arrayPos.length; i++) {
var long = arrayPos[i][0]
var lat = arrayPos[i][1];
var batteryCharge = arrayPos[i][3];
// create a new feature with the positon values from the array
var feature = new ol.Feature({
geometry: new ol.geom.Point(ol.proj.fromLonLat([long,lat]))
})
//Batterycharge value is going to be printed in the Pop-up window
feature.set('batteryCharge',batteryCharge);
vectorSource.add(feature);
}
map.addLayer(layer);
//initialize the popup
var container = document.getElementById('popup');
var content = document.getElementById('popup-content');
var overlay = new ol.Overlay({
element: container,autoPan: true,autoPanAnimation: {
duration: 250
}
});
map.addOverlay(overlay);
//display the pop with on mouse over event
map.on('pointermove',function (event) {
if (map.hasFeatureAtPixel(event.pixel) === true) {
var coordinate = event.coordinate;
const features = event.target.getFeatures();
const batteryCharge = features.get(0).get('batteryCharge');
//simple text written in the popup,values are just of the second index
content.innerHTML = event.traget+'<br><b>Batteriestatus: </b>'+batteryCharge;
overlay.setPosition(coordinate);
}
else {
overlay.setPosition(undefined);
}
});
解决方法
event.target.getFeatures()
用于选择交互。对于地图上的pointermove
,请尝试替换
if (map.hasFeatureAtPixel(event.pixel) === true) {
var coordinate = event.coordinate;
const features = event.target.getFeatures();
const batteryCharge = features.get(0).get('batteryCharge');
使用
const features = map.getFeaturesAtPixel(event.pixel);
if (features.length > 0) {
var coordinate = event.coordinate;
const batteryCharge = features[0].get('batteryCharge');
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