住宅街ビューア

この例では、ユーザーが住所を入力して付近の設備を評価できるように、住所用の Place Autocomplete 検索バーを追加しています。住宅街のユーザー向けに、placeTypePreferences は日常生活とつながりのあるタイプに設定されています。このサンプルの住所は米国に限定されています。

ソースコードを表示

TypeScript

let map: google.maps.Map;
let localContextMapView;

const styles: google.maps.MapTypeStyle[] = [
  {
    elementType: "geometry",
    stylers: [
      {
        color: "#f5f5f5",
      },
    ],
  },
  {
    elementType: "labels",
    stylers: [
      {
        visibility: "off",
      },
    ],
  },
  {
    elementType: "labels.icon",
    stylers: [
      {
        visibility: "off",
      },
    ],
  },
  {
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#616161",
      },
    ],
  },
  {
    elementType: "labels.text.stroke",
    stylers: [
      {
        color: "#f5f5f5",
      },
    ],
  },
  {
    featureType: "administrative.land_parcel",
    stylers: [
      {
        visibility: "off",
      },
    ],
  },
  {
    featureType: "administrative.land_parcel",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#bdbdbd",
      },
    ],
  },
  {
    featureType: "administrative.neighborhood",
    stylers: [
      {
        visibility: "off",
      },
    ],
  },
  {
    featureType: "poi",
    elementType: "geometry",
    stylers: [
      {
        color: "#eeeeee",
      },
    ],
  },
  {
    featureType: "poi",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#757575",
      },
    ],
  },
  {
    featureType: "poi.park",
    elementType: "geometry",
    stylers: [
      {
        color: "#e5e5e5",
      },
    ],
  },
  {
    featureType: "poi.park",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#9e9e9e",
      },
    ],
  },
  {
    featureType: "road",
    elementType: "geometry",
    stylers: [
      {
        color: "#ffffff",
      },
    ],
  },
  {
    featureType: "road.arterial",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#757575",
      },
    ],
  },
  {
    featureType: "road.highway",
    elementType: "geometry",
    stylers: [
      {
        color: "#dadada",
      },
    ],
  },
  {
    featureType: "road.highway",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#616161",
      },
    ],
  },
  {
    featureType: "road.local",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#9e9e9e",
      },
    ],
  },
  {
    featureType: "transit.line",
    elementType: "geometry",
    stylers: [
      {
        color: "#e5e5e5",
      },
    ],
  },
  {
    featureType: "transit.station",
    elementType: "geometry",
    stylers: [
      {
        color: "#eeeeee",
      },
    ],
  },
  {
    featureType: "water",
    elementType: "geometry",
    stylers: [
      {
        color: "#c9c9c9",
      },
    ],
  },
  {
    featureType: "water",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#9e9e9e",
      },
    ],
  },
];

function initMap() {
  localContextMapView = new google.maps.localContext.LocalContextMapView({
    element: document.getElementById("map"),
    placeTypePreferences: [
      { type: "bakery", weight: 1 },
      { type: "bank", weight: 1 },
      { type: "cafe", weight: 2 },
      { type: "department_store", weight: 1 },
      { type: "drugstore", weight: 1 },
      { type: "park", weight: 3 },
      { type: "restaurant", weight: 2 },
      { type: "primary_school", weight: 3 },
      { type: "secondary_school", weight: 3 },
      { type: "supermarket", weight: 2 },
    ],
    maxPlaceCount: 24,
  });

  map = localContextMapView.map!;

  map.setOptions({
    center: { lat: 51.507307, lng: -0.08114 },
    zoom: 14,
    styles,
  });

  // Build and add the Autocomplete search bar
  const input = document.getElementById("input")! as HTMLInputElement;
  const options = {
    types: ["address"],
    componentRestrictions: {
      country: "us",
    },
    fields: ["address_components", "geometry", "name"],
  };
  const autocomplete = new google.maps.places.Autocomplete(input, options);

  autocomplete.addListener("place_changed", () => {
    const place = autocomplete.getPlace();

    if (!place || !place.geometry) {
      // User entered the name of a Place that was not suggested and
      // pressed the Enter key, or the Place Details request failed.
      window.alert("No address available for that input.");
      return;
    }

    // Recenter the map to the selected address
    map.setOptions({
      center: place.geometry!.location,
      zoom: 14,
    });
    // Update the localContext directionsOptions origin
    localContextMapView.directionsOptions = {
      origin: place.geometry!.location,
    };

    new google.maps.Marker({
      position: place.geometry!.location,
      map: map,
      icon: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAQAAABKfvVzAAAAbUlEQVR4Ae3LoQ2AMAAF0TMYPJoV2IApGIJtmIMtmIAVqutraj6IiqZpmyYoCO/08R7bXbOOHSF2Ohr0HCh00EPdwImiTgYqRgxKMowUTFiUyTKRMeNQIcdMYsGjSp6FyIoaWkmoUuLxEPzDh1xIaLFFuTyHMgAAAABJRU5ErkJggg==",
      zIndex: 30,
    });

    // update the results with new places
    localContextMapView.search();
  });
}

declare global {
  interface Window {
    initMap: () => void
  }
}
window.initMap = initMap;
index.ts

注: TypeScript と Google マップの使用方法については、ガイドをご確認ください。

JavaScript

let map;
let localContextMapView;
const styles = [
  {
    elementType: "geometry",
    stylers: [
      {
        color: "#f5f5f5",
      },
    ],
  },
  {
    elementType: "labels",
    stylers: [
      {
        visibility: "off",
      },
    ],
  },
  {
    elementType: "labels.icon",
    stylers: [
      {
        visibility: "off",
      },
    ],
  },
  {
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#616161",
      },
    ],
  },
  {
    elementType: "labels.text.stroke",
    stylers: [
      {
        color: "#f5f5f5",
      },
    ],
  },
  {
    featureType: "administrative.land_parcel",
    stylers: [
      {
        visibility: "off",
      },
    ],
  },
  {
    featureType: "administrative.land_parcel",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#bdbdbd",
      },
    ],
  },
  {
    featureType: "administrative.neighborhood",
    stylers: [
      {
        visibility: "off",
      },
    ],
  },
  {
    featureType: "poi",
    elementType: "geometry",
    stylers: [
      {
        color: "#eeeeee",
      },
    ],
  },
  {
    featureType: "poi",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#757575",
      },
    ],
  },
  {
    featureType: "poi.park",
    elementType: "geometry",
    stylers: [
      {
        color: "#e5e5e5",
      },
    ],
  },
  {
    featureType: "poi.park",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#9e9e9e",
      },
    ],
  },
  {
    featureType: "road",
    elementType: "geometry",
    stylers: [
      {
        color: "#ffffff",
      },
    ],
  },
  {
    featureType: "road.arterial",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#757575",
      },
    ],
  },
  {
    featureType: "road.highway",
    elementType: "geometry",
    stylers: [
      {
        color: "#dadada",
      },
    ],
  },
  {
    featureType: "road.highway",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#616161",
      },
    ],
  },
  {
    featureType: "road.local",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#9e9e9e",
      },
    ],
  },
  {
    featureType: "transit.line",
    elementType: "geometry",
    stylers: [
      {
        color: "#e5e5e5",
      },
    ],
  },
  {
    featureType: "transit.station",
    elementType: "geometry",
    stylers: [
      {
        color: "#eeeeee",
      },
    ],
  },
  {
    featureType: "water",
    elementType: "geometry",
    stylers: [
      {
        color: "#c9c9c9",
      },
    ],
  },
  {
    featureType: "water",
    elementType: "labels.text.fill",
    stylers: [
      {
        color: "#9e9e9e",
      },
    ],
  },
];

function initMap() {
  localContextMapView = new google.maps.localContext.LocalContextMapView({
    element: document.getElementById("map"),
    placeTypePreferences: [
      { type: "bakery", weight: 1 },
      { type: "bank", weight: 1 },
      { type: "cafe", weight: 2 },
      { type: "department_store", weight: 1 },
      { type: "drugstore", weight: 1 },
      { type: "park", weight: 3 },
      { type: "restaurant", weight: 2 },
      { type: "primary_school", weight: 3 },
      { type: "secondary_school", weight: 3 },
      { type: "supermarket", weight: 2 },
    ],
    maxPlaceCount: 24,
  });
  map = localContextMapView.map;
  map.setOptions({
    center: { lat: 51.507307, lng: -0.08114 },
    zoom: 14,
    styles,
  });

  // Build and add the Autocomplete search bar
  const input = document.getElementById("input");
  const options = {
    types: ["address"],
    componentRestrictions: {
      country: "us",
    },
    fields: ["address_components", "geometry", "name"],
  };
  const autocomplete = new google.maps.places.Autocomplete(input, options);

  autocomplete.addListener("place_changed", () => {
    const place = autocomplete.getPlace();

    if (!place || !place.geometry) {
      // User entered the name of a Place that was not suggested and
      // pressed the Enter key, or the Place Details request failed.
      window.alert("No address available for that input.");
      return;
    }

    // Recenter the map to the selected address
    map.setOptions({
      center: place.geometry.location,
      zoom: 14,
    });
    // Update the localContext directionsOptions origin
    localContextMapView.directionsOptions = {
      origin: place.geometry.location,
    };
    new google.maps.Marker({
      position: place.geometry.location,
      map: map,
      icon: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAQAAABKfvVzAAAAbUlEQVR4Ae3LoQ2AMAAF0TMYPJoV2IApGIJtmIMtmIAVqutraj6IiqZpmyYoCO/08R7bXbOOHSF2Ohr0HCh00EPdwImiTgYqRgxKMowUTFiUyTKRMeNQIcdMYsGjSp6FyIoaWkmoUuLxEPzDh1xIaLFFuTyHMgAAAABJRU5ErkJggg==",
      zIndex: 30,
    });
    // update the results with new places
    localContextMapView.search();
  });
}

window.initMap = initMap;
index.js

注: JavaScript は TypeScript スニペットからコンパイルされます。

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;
}

input {
  height: 30px;
  margin: 12px 0px;
  padding: 10px;
  width: 300px;
}
style.css

HTML

<html>
  <head>
    <title>Local Context Home</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <input id="input" placeholder="Enter a US address" />
    <div id="map"></div>

    <!--
      The `defer` attribute causes the callback to execute after the full HTML
      document has been parsed. For non-blocking uses, avoiding race conditions,
      and consistent behavior across browsers, consider loading using Promises.
      See https://developers.google.com/maps/documentation/javascript/load-maps-js-api
      for more information.
      -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&libraries=localContext,places&v=beta"
      defer
    ></script>
  </body>
</html>
index.html

サンプルを試す

Stackblitz.com CodeSandbox.io JSFiddle.net GitPod.io Google Cloud Shell

コードを理解する

場所のタイプの表示頻度を調整する

ローカル コンテキスト ライブラリが返す場所のタイプを指定するときに、weight 属性を使用して各タイプに相対的な重み付けを付けることができます（相対的な重み付けが高いタイプは、より頻繁に表示されます）。この例では、公園や学校がある場合に、それらの表示頻度が高くなるよう指定しています。

TypeScript

placeTypePreferences: [
  { type: "bakery", weight: 1 },
  { type: "bank", weight: 1 },
  { type: "cafe", weight: 2 },
  { type: "department_store", weight: 1 },
  { type: "drugstore", weight: 1 },
  { type: "park", weight: 3 },
  { type: "restaurant", weight: 2 },
  { type: "primary_school", weight: 3 },
  { type: "secondary_school", weight: 3 },
  { type: "supermarket", weight: 2 },
],
index.ts

注: TypeScript と Google マップの使用方法については、ガイドをご確認ください。

JavaScript

placeTypePreferences: [
  { type: "bakery", weight: 1 },
  { type: "bank", weight: 1 },
  { type: "cafe", weight: 2 },
  { type: "department_store", weight: 1 },
  { type: "drugstore", weight: 1 },
  { type: "park", weight: 3 },
  { type: "restaurant", weight: 2 },
  { type: "primary_school", weight: 3 },
  { type: "secondary_school", weight: 3 },
  { type: "supermarket", weight: 2 },
],
index.js

Place Autocomplete

Place Autocomplete サービスを使用するには、まずプレイス ライブラリと Maps JavaScript API を読み込む必要があります。Autocomplete のドキュメントでは、地域や場所のタイプに応じた予測のフィルタリングなど、Place Autocomplete の動作のカスタマイズに使用できるすべてのパラメータについて詳しく説明しています。

1. プロジェクトで Places API を有効にします。
2. ローカル コンテキスト ライブラリに加えて、プレイス ライブラリ、JavaScript API を読み込みます。

<script async
    src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=localContext,places&v=beta&callback=initMap">
</script>

1. Place Autocomplete 検索バーをウェブサイトや地図に追加する方法については、Autocomplete のドキュメントやコードサンプルをご覧ください。この例では、関連する行は次のようになります。

TypeScript

// Build and add the Autocomplete search bar
const input = document.getElementById("input")! as HTMLInputElement;
const options = {
  types: ["address"],
  componentRestrictions: {
    country: "us",
  },
  fields: ["address_components", "geometry", "name"],
};
const autocomplete = new google.maps.places.Autocomplete(input, options);
index.ts

注: TypeScript と Google マップの使用方法については、ガイドをご確認ください。

JavaScript

// Build and add the Autocomplete search bar
const input = document.getElementById("input");
const options = {
  types: ["address"],
  componentRestrictions: {
    country: "us",
  },
  fields: ["address_components", "geometry", "name"],
};
const autocomplete = new google.maps.places.Autocomplete(input, options);
index.js

サンプルを試す

Stackblitz.com CodeSandbox.io JSFiddle.net GitPod.io Google Cloud Shell