在 Google 条路线上添加 InfoWindow

Question

我正在尝试向路线添加信息窗口。有很多示例可以在标记上的事件侦听器上添加 InfoWindow。

但是我怎样才能移动信息窗口以显示在从一个标记到另一个标记的实际计划路线上。之前已经有人尝试过问这个问题，但没有回应 (InfoWindow on Directions Route)。

无论如何，我进行了很多谷歌搜索，只发现了一个与此类似的问题，但又没有对此做出回应。

我尝试 infowindow.open(map,this) 回调中标记上的事件，但它会在标记位置打开信息窗口。我只是想显示类似 Google 的持续时间和距离。就像附图中的东西

var infowindow2 = new google.maps.InfoWindow();
distanceService.getDistanceMatrix(distanceRequest, function (response, status) {
    if (status == "OK") {
      infowindow2.setContent(response.rows[0].elements[0].distance.text + "<br>" + response.rows[0].elements[0].duration.text + " ")
    }
    else {
      alert("Error: " + status)
    }
  })
infowindow2.open(map, this);

Answer 1

要在路线上找到一个位置并将信息窗口放在那里，请解析路线 (the details are described in the documentation)。沿路线获取一个位置，并使用该位置调用信息窗口的 setPosition 方法。

function calcRoute(start, end) {
  var request = {
      origin:start,
      destination:end,
      travelMode: google.maps.DirectionsTravelMode.DRIVING
  };
  directionsService.route(request, function(response, status) {
    if (status == google.maps.DirectionsStatus.OK) {
      directionsDisplay.setDirections(response);
      var step = 1;
      var infowindow2 = new google.maps.InfoWindow();
      infowindow2.setContent(response.routes[0].legs[0].steps[step].distance.text + "<br>" + response.routes[0].legs[0].steps[step].duration.text + " ");
      infowindow2.setPosition(response.routes[0].legs[0].steps[step].end_location);
      infowindow2.open(map);
    }
  });
}

如果您确实需要路线的中点，请参阅Midpoint of route in google maps

proof of concept fiddle

代码片段：

var directionsDisplay;
var directionsService = new google.maps.DirectionsService();
var map;

function initialize() {
  directionsDisplay = new google.maps.DirectionsRenderer();
  var chicago = new google.maps.LatLng(41.850033, -87.6500523);

  var mapOptions = {
    zoom: 7,
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    center: chicago
  }
  map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
  directionsDisplay.setMap(map);
  calcRoute("67 The Windmill Hill, Allesley, Coventry CV5 9FR, UK", "26 Rosaville Crescent, Allesley, Coventry CV5 9BP, UK");
}

function calcRoute(start, end) {
  var request = {
    origin: start,
    destination: end,
    travelMode: google.maps.DirectionsTravelMode.DRIVING
  };
  directionsService.route(request, function(response, status) {
    if (status == google.maps.DirectionsStatus.OK) {
      directionsDisplay.setDirections(response);
      var step = Math.floor(response.routes[0].legs[0].steps.length / 2);
      var infowindow2 = new google.maps.InfoWindow();
      infowindow2.setContent(response.routes[0].legs[0].steps[step].distance.text + "<br>" + response.routes[0].legs[0].steps[step].duration.text + " ");
      infowindow2.setPosition(response.routes[0].legs[0].steps[step].end_location);
      infowindow2.open(map);
    }
  });
}

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

html,
body,
#map-canvas {
  height: 100%;
  margin: 0px;
  padding: 0px
}

#panel {
  position: absolute;
  top: 5px;
  left: 50%;
  margin-left: -180px;
  z-index: 5;
  background-color: #fff;
  padding: 5px;
  border: 1px solid #999;
}

<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<div id="map-canvas"></div>

Answer 2

您可以使用overview_path数组来找到路径的中心点。然后将其设置为信息窗口位置。

var center_point = response.routes[0].overview_path.length/2;

var infowindow = new google.maps.InfoWindow();
infowindow.setContent(response.routes[0].legs[0].distance.text + "<br>" + response.routes[0].legs[0].duration.text + " ");
infowindow.setPosition(response.routes[0].overview_path[center_point|0]);
infowindow.open(map);

在 Google 条路线上添加 InfoWindow

Adding InfoWindow on Google directions route

javascript

google-maps

infowindow

directions

google-directions-api