如要自訂地圖元件的外觀和感受，請使用雲端式地圖樣式設定地圖，或直接在程式碼中設定選項。
使用雲端式地圖樣式設定設定地圖樣式
如要將地圖樣式套用至 JavaScript 消費者行程分享地圖，請在建立 JourneySharingMapView 時指定 mapId 和其他 mapOptions。
以下範例說明如何套用含有地圖 ID 的地圖樣式。
JavaScript
const mapView = new google.maps.journeySharing.JourneySharingMapView({
element: document.getElementById('map_canvas'),
locationProviders: [locationProvider],
mapOptions: {
mapId: 'YOUR_MAP_ID'
}
// Any other styling options.
});
TypeScript
const mapView = new google.maps.journeySharing.JourneySharingMapView({
element: document.getElementById('map_canvas'),
locationProviders: [locationProvider],
mapOptions: {
mapId: 'YOUR_MAP_ID'
}
// Any other styling options.
});
直接在程式碼中設定地圖樣式
您也可以在建立 JourneySharingMapView 時設定地圖選項，藉此自訂地圖樣式。以下範例說明如何使用地圖選項為地圖設定樣式。如要進一步瞭解可設定的地圖選項，請參閱 Google Maps JavaScript API 參考資料中的 mapOptions。
JavaScript
const mapView = new google.maps.journeySharing.JourneySharingMapView({
element: document.getElementById('map_canvas'),
locationProviders: [locationProvider],
mapOptions: {
styles: [
{
"featureType": "road.arterial",
"elementType": "geometry",
"stylers": [
{ "color": "#CCFFFF" }
]
}
]
}
});
TypeScript
const mapView = new google.maps.journeySharing.JourneySharingMapView({
element: document.getElementById('map_canvas'),
locationProviders: [locationProvider],
mapOptions: {
styles: [
{
"featureType": "road.arterial",
"elementType": "geometry",
"stylers": [
{ "color": "#CCFFFF" }
]
}
]
}
});
停用自動調整功能
您可以停用自動調整功能，停止讓地圖自動將可視區域調整至車輛和預估路線。以下範例說明如何在設定行程分享地圖檢視畫面時，停用自動調整功能。
JavaScript
const mapView = new
google.maps.journeySharing.JourneySharingMapView({
element: document.getElementById('map_canvas'),
locationProviders: [locationProvider],
automaticViewportMode:
google.maps.journeySharing
.AutomaticViewportMode.NONE,
...
});
TypeScript
const mapView = new
google.maps.journeySharing.JourneySharingMapView({
element: document.getElementById('map_canvas'),
locationProviders: [locationProvider],
automaticViewportMode:
google.maps.journeySharing
.AutomaticViewportMode.NONE,
...
});
取代現有地圖
您可以取代含有標記或其他自訂項目的現有地圖，而不會遺失這些自訂項目。
舉例來說，假設網頁含有標準 google.maps.Map 實體，且顯示標記：
<!DOCTYPE html>
<html>
<head>
<style>
/* Set the size of the div element that contains the map */
#map {
height: 400px; /* The height is 400 pixels */
width: 100%; /* The width is the width of the web page */
}
</style>
</head>
<body>
<h3>My Google Maps Demo</h3>
<!--The div element for the map -->
<div id="map"></div>
<script>
// Initialize and add the map
function initMap() {
// The location of Pier 39 in San Francisco
var pier39 = {lat: 37.809326, lng: -122.409981};
// The map, initially centered at Mountain View, CA.
var map = new google.maps.Map(document.getElementById('map'));
map.setOptions({center: {lat: 37.424069, lng: -122.0916944}, zoom: 14});
// The marker, now positioned at Pier 39
var marker = new google.maps.Marker({position: pier39, map: map});
}
</script>
<!-- Load the API from the specified URL.
* The async attribute allows the browser to render the page while the API loads.
* The key parameter will contain your own API key (which is not needed for this tutorial).
* The callback parameter executes the initMap() function.
-->
<script defer src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap">
</script>
</body>
</html>
如要新增 JavaScript 車隊追蹤程式庫，請按照下列步驟操作：
- 新增驗證權杖工廠的程式碼。
- 在
initMap()函式中初始化位置資訊供應器。 - 在
initMap()函式中初始化地圖檢視畫面。這個檢視畫面包含地圖。 - 將自訂項目移至地圖檢視初始化的回呼函式。
- 將位置程式庫新增至 API 載入器。
使用排程工作進行地圖取代的範例
以下範例說明如何使用現有地圖，並在其中為排程工作用途初始化位置提供者物件。在叫車服務用途中，程式碼類似，但您會使用 FleetEngineVehicleLocationProvider 而非 FleetEngineDeliveryVehicleLocationProvider。
<!DOCTYPE html>
<html>
<head>
<style>
/* Set the size of the div element that contains the map */
#map {
height: 400px; /* The height is 400 pixels */
width: 100%; /* The width is the width of the web page */
}
</style>
</head>
<body>
<h3>My Google Maps Demo</h3>
<!--The div element for the map -->
<div id="map"></div>
<script>
let locationProvider;
// (1) Authentication Token Fetcher
function authTokenFetcher(options) {
// options is a record containing two keys called
// serviceType and context. The developer should
// generate the correct SERVER_TOKEN_URL and request
// based on the values of these fields.
const response = await fetch(SERVER_TOKEN_URL);
if (!response.ok) {
throw new Error(response.statusText);
}
const data = await response.json();
return {
token: data.Token,
expiresInSeconds: data.ExpiresInSeconds
};
}
// Initialize and add the map
function initMap() {
// (2) Initialize location provider. Use FleetEngineDeliveryVehicleLocationProvider
// as appropriate.
locationProvider = new google.maps.journeySharing.FleetEngineDeliveryVehicleLocationProvider({
YOUR_PROVIDER_ID,
authTokenFetcher,
});
// (3) Initialize map view (which contains the map).
const mapView = new google.maps.journeySharing.JourneySharingMapView({
element: document.getElementById('map'),
locationProviders: [locationProvider],
// any styling options
});
mapView.addListener('ready', () => {
locationProvider.deliveryVehicleId = DELIVERY_VEHICLE_ID;
// (4) Add customizations like before.
// The location of Pier 39 in San Francisco
var pier39 = {lat: 37.809326, lng: -122.409981};
// The map, initially centered at Mountain View, CA.
var map = mapView.map;
map.setOptions({center: {lat: 37.424069, lng: -122.0916944}, zoom: 14});
// The marker, now positioned at Pier 39
var marker = new google.maps.Marker({position: pier39, map: map});
};
}
</script>
<!-- Load the API from the specified URL
* The async attribute allows the browser to render the page while the API loads
* The key parameter will contain your own API key (which is not needed for this tutorial)
* The callback parameter executes the initMap() function
*
* (5) Add the journey sharing library to the API loader, which includes Fleet Tracking functionality.
-->
<script defer
src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=journeySharing">
</script>
</body>
</html>
如果您在碼頭 39 附近運作具有指定 ID 的運送車輛，現在會在地圖上顯示。