地点照片

查看完整的示例源代码

此基本照片轮播界面会显示指定地点的照片，包括必需的作者归属信息（显示在照片的左上角）。

TypeScript

async function init() {
    const { Place } = await google.maps.importLibrary('places') as google.maps.PlacesLibrary;

    // Use a place ID to create a new Place instance.
    const place = new Place({
        id: 'ChIJydSuSkkUkFQRsqhB-cEtYnw', // Woodland Park Zoo, Seattle WA
    });

    // Call fetchFields, passing the desired data fields.
    await place.fetchFields({ fields: ['displayName', 'photos', 'editorialSummary'] });

    // Get the various HTML elements.
    let heading = document.getElementById('heading') as HTMLElement;
    let summary = document.getElementById('summary') as HTMLElement;
    let gallery = document.getElementById('gallery') as HTMLElement;
    let expandedImageDiv = document.getElementById('expanded-image') as HTMLElement;
    let attributionLabel;

    // Show the display name and summary for the place.
    heading.textContent = place.displayName as string;
    summary.textContent = place.editorialSummary as string;

    // Add photos to the gallery.
    if (place.photos) {
        place.photos?.forEach((photo) => {
            const img = document.createElement('img');
            const expandedImage = document.createElement('img');
            img.src = photo.getURI({maxHeight: 380});
            img.addEventListener('click', (event) => {
                event.preventDefault();
                expandedImage.src = img.src;
                expandedImageDiv.innerHTML = '';
                expandedImageDiv.appendChild(expandedImage);
                attributionLabel = createAttribution(photo.authorAttributions);
                expandedImageDiv.appendChild(attributionLabel);
            });

            gallery.appendChild(img);
        });
    }

    // Display the first photo.
    const img = document.createElement('img');
    img.src = place.photos![0].getURI();
    expandedImageDiv.appendChild(img);
    attributionLabel = createAttribution(place.photos![0].authorAttributions);
    expandedImageDiv.appendChild(attributionLabel);

    // Helper function to create attribution DIV.
    function createAttribution(attribution) {
        attributionLabel = document.createElement("a");
        attributionLabel.classList.add('attribution-label');
        attributionLabel.textContent = attribution[0].displayName;
        attributionLabel.href = attribution[0].uri;
        attributionLabel.target = '_blank;'
        return attributionLabel;
    }
}

init();
index.ts

JavaScript

async function init() {
  const { Place } = await google.maps.importLibrary("places");
  // Use a place ID to create a new Place instance.
  const place = new Place({
    id: "ChIJydSuSkkUkFQRsqhB-cEtYnw", // Woodland Park Zoo, Seattle WA
  });

  // Call fetchFields, passing the desired data fields.
  await place.fetchFields({
    fields: ["displayName", "photos", "editorialSummary"],
  });

  // Get the various HTML elements.
  let heading = document.getElementById("heading");
  let summary = document.getElementById("summary");
  let gallery = document.getElementById("gallery");
  let expandedImageDiv = document.getElementById("expanded-image");
  let attributionLabel;

  // Show the display name and summary for the place.
  heading.textContent = place.displayName;
  summary.textContent = place.editorialSummary;
  // Add photos to the gallery.
  if (place.photos) {
    place.photos?.forEach((photo) => {
      const img = document.createElement("img");
      const expandedImage = document.createElement("img");

      img.src = photo.getURI({ maxHeight: 380 });
      img.addEventListener("click", (event) => {
        event.preventDefault();
        expandedImage.src = img.src;
        expandedImageDiv.innerHTML = "";
        expandedImageDiv.appendChild(expandedImage);
        attributionLabel = createAttribution(photo.authorAttributions);
        expandedImageDiv.appendChild(attributionLabel);
      });
      gallery.appendChild(img);
    });
  }

  // Display the first photo.
  const img = document.createElement("img");

  img.src = place.photos[0].getURI();
  expandedImageDiv.appendChild(img);
  attributionLabel = createAttribution(place.photos[0].authorAttributions);
  expandedImageDiv.appendChild(attributionLabel);

  // Helper function to create attribution DIV.
  function createAttribution(attribution) {
    attributionLabel = document.createElement("a");
    attributionLabel.classList.add("attribution-label");
    attributionLabel.textContent = attribution[0].displayName;
    attributionLabel.href = attribution[0].uri;
    attributionLabel.target = "_blank;";
    return attributionLabel;
  }
}

init();
index.js

CSS

/* 
 * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
#map {
  height: 100%;
}

/* 
 * Optional: Makes the sample page fill the window. 
 */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

#container {
  display: flex;
  padding: 10px;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
}

.place-overview {
  width: 400px;
  height: 380px;
  overflow-x: auto;
  position: relative;
  margin-right: 20px;
}

#info {
  font-family: sans-serif;
  position: sticky;
  position: -webkit-sticky;
  left: 0;
  padding-bottom: 10px;
}

#heading {
  width: 500px;
  font-size: x-large;
  margin-bottom: 20px;
}

#summary {
  width: 500px;
}

#gallery {
  display: flex;
}

#gallery img {
  width: 200px;
  height: 200px;
  margin-right: 10px;
  margin-top: 40px;
  border-radius: 10px;
  cursor: pointer;
}

#expanded-image {
  display: flex;
  height: 380px;
  overflow: hidden;
  background-color: #000;
}

#expanded-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.attribution-label {
  background-color: #fff;
  opacity: 0.7;
  font-size: 10px;
  font-family: sans-serif;
  margin: 2px;
  position: absolute;
}

style.css

HTML

<html>
  <head>
    <title>Place Photos</title>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <div id="container">
      <div class="place-overview">
        <div id="info">
          <div id="heading"></div>
          <div id="summary"></div>
        </div>
        <div id="gallery"></div>
      </div>
      <div id="expanded-image"></div>
    </div>

    <!-- prettier-ignore -->
    <script>(g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))})
        ({key: "AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg", v: "weekly"});</script>
  </body>
</html>
index.html

试用示例

借助地点照片，您可以向网页添加高品质照片内容。访问存储在地点数据库中的数百万张照片，并使用“查找地点”“附近搜索”“文本搜索”“自动补全”和“地点详情”获取可调整大小的图片。

获取照片

如需获取某个地点的照片，请在 fetchFields() 请求参数中添加 photos 字段。生成的地点实例包含最多 10 个 Photo 对象的数组，您可以通过该数组访问图片及其所需的归属信息。 调用 getURI() 以返回源照片 URI，并指定图片的最大高度和/或宽度。如果您同时为 maxHeight 和 maxWidth 指定值，照片服务会将图片大小调整为两种尺寸中的较小者，同时保留原始宽高比。

以下示例展示了如何针对照片发出地点详情请求、对照片实例调用 getURI() 以返回图片的来源 URI，然后将第一张照片结果添加到 img 元素（出于清晰起见，省略了提供方信息）： 

const { Place } = await google.maps.importLibrary('places');

// Use a place ID to create a new Place instance.
const place = new Place({
    id: 'ChIJydSuSkkUkFQRsqhB-cEtYnw', // Woodland Park Zoo, Seattle WA
});

// Call fetchFields, passing the desired data fields.
await place.fetchFields({ fields: ['photos'] });

// Add the first photo to an img element.
const photoImg = document.getElementById('image-container');
photoImg.src = place.photos[0].getURI({maxHeight: 400});

作者提供方说明

在显示照片时，您还必须显示照片的作者信息。使用 AuthorAttribution 类返回归因。归因包括作者的姓名 (displayName)、其 Google 地图个人资料的 URI (uri) 和作者照片的 URI (photoURI)。以下代码段展示了如何返回地点照片的 displayName、uri 和 photoURI。 

  let name = place.photos[0].authorAttributions[0].displayName;
  let url = place.photos[0].authorAttributions[0].uri;
  let authorPhoto = place.photos[0].authorAttributions[0].photoURI;