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javascript - Google Places API 仅返回 1 个结果

问题描述

我们在一个类似的问题中看到 Places API 最多应该返回 5 个结果，但现在我们只能得到 1 个结果。我们按照教程在悉尼展示博物馆。有谁知道如何显示多个结果？Maps and Places API 的脚本如下。

let map;
let service;
let infowindow;

function initMap() {
  const sydney = new google.maps.LatLng(-33.867, 151.195);
  infowindow = new google.maps.InfoWindow();
  map = new google.maps.Map(document.getElementById("map"), {
    center: sydney,
    zoom: 15
  });
  const request = {
    query: "Museum",
    fields: ["name", "geometry"]
  };
  service = new google.maps.places.PlacesService(map);
  service.findPlaceFromQuery(request, (results, status) => {
    if (status === google.maps.places.PlacesServiceStatus.OK) {
      for (let i = 0; i < results.length; i++) {
        createMarker(results[i]);
      }
      map.setCenter(results[0].geometry.location);
    }
  });
}

function createMarker(place) {
  const marker = new google.maps.Marker({
    map,
    position: place.geometry.location
  });
  google.maps.event.addListener(marker, "click", () => {
    infowindow.setContent(place.name);
    infowindow.open(map);
  });
}

标签： javascriptgoogle-maps

解决方案

从文档中：

从查询中查找地点接受文本输入并返回一个地点。

（注意单数“一个地方”）

要获得多个结果，请使用nearbySearch(或textSearch)

 const sydney = new google.maps.LatLng(-33.867, 151.195);
 var request = {
    location: sydney ,
    radius: '10000',
    type: ['museum']
  };

  service = new google.maps.places.PlacesService(map);
  service.nearbySearch(request, (results, status) => {
    if (status === google.maps.places.PlacesServiceStatus.OK) {
      for (let i = 0; i < results.length; i++) {
        createMarker(results[i]);
      }
      map.setCenter(results[0].geometry.location);
    }
  });

概念证明小提琴

带有 20 个结果的地图截图

代码片段：

"use strict";

// This example requires the Places library. Include the libraries=places
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBIwzALxUPNbatRBj3Xi1Uhp0fFzwWNBkE&libraries=places">
let map;
let service;
let infowindow;

function initMap() {
  const sydney = new google.maps.LatLng(-33.867, 151.195);
  infowindow = new google.maps.InfoWindow();
  map = new google.maps.Map(document.getElementById("map"), {
    center: sydney,
    zoom: 15
  });
 var request = {
    location: sydney ,
    radius: '10000',
    type: ['museum']
  };

  service = new google.maps.places.PlacesService(map);
  service.nearbySearch(request, (results, status) => {
    if (status === google.maps.places.PlacesServiceStatus.OK) {
      console.log("places service returned "+results.length+" results");
      document.getElementById('info').innerHTML = "places service returned "+results.length+" results";
      for (let i = 0; i < results.length; i++) {
        createMarker(results[i]);
      }
      map.setCenter(results[0].geometry.location);
    }
  });
}

function createMarker(place) {
  const marker = new google.maps.Marker({
    map,
    position: place.geometry.location
  });
  google.maps.event.addListener(marker, "click", () => {
    infowindow.setContent(place.name);
    infowindow.open(map);
  });
}
/* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
#map {
  height: 90%;
}

/* Optional: Makes the sample page fill the window. */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}
<!DOCTYPE html>
<html>
  <head>
    <title>Place Searches</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&callback=initMap&libraries=places&v=weekly"
      defer
    ></script>
    <!-- jsFiddle will insert css and js -->
  </head>
  <body>
    <div id="info"></div>
    <div id="map"></div>
  </body>
</html>

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