若要自定义地图组件的外观和风格,请使用云端地图样式设置或直接在代码中设置选项,设置地图样式。
使用云端地图样式设置为地图设置样式
使用云端地图样式设置自定义地图组件的外观和风格。您可以在 Google Cloud 控制台上为使用 Google 地图的任何应用创建和修改地图样式,而无需对代码进行任何更改。如需了解详情,请参阅云端地图样式设置。
ConsumerMapView
和 ConsumerMapFragment
类均支持云端地图样式设置。若要使用云端地图样式设置,请确保所选地图渲染程序为 LATEST
。以下部分通过示例介绍了如何在项目中使用基于云的 Google 地图样式。
ConsumerMapView
如需在 ConsumerMapView
中使用云端地图样式,请在 GoogleMapOptions
上设置 mapId
字段,并将 GoogleMapOptions
传递给 getConsumerGoogleMapAsync(ConsumerMapReadyCallback, Fragment, GoogleMapOptions) 或 getConsumerGoogleMapAsync(ConsumerMapReadyCallback, FragmentActivity, GoogleMapOptions)
示例
Java
public class SampleAppActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ConsumerMapView mapView = findViewById(R.id.consumer_map_view);
if (mapView != null) {
GoogleMapOptions optionsWithMapId = new GoogleMapOptions().mapId("map-id");
mapView.getConsumerGoogleMapAsync(
new ConsumerMapReadyCallback() {
@Override
public void onConsumerMapReady(@NonNull ConsumerGoogleMap consumerGoogleMap) {
// ...
}
},
/* fragmentActivity= */ this,
/* googleMapOptions= */ optionsWithMapId);
}
}
}
Kotlin
class SampleAppActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val mapView = findViewById(R.id.consumer_map_view) as ConsumerMapView
val optionsWithMapId = GoogleMapOptions().mapId("map-id")
mapView.getConsumerGoogleMapAsync(
object : ConsumerGoogleMap.ConsumerMapReadyCallback() {
override fun onConsumerMapReady(consumerGoogleMap: ConsumerGoogleMap) {
// ...
}
},
/* fragmentActivity= */ this,
/* googleMapOptions= */ optionsWithMapId)
}
}
ConsumerMapFragment
您可以通过以下两种方式在 ConsumerMapFragments 中使用云端地图样式设置:
- 使用 XML 进行静态设置。
- 使用
newInstance
动态创建。
使用 XML 静态设置
如需在 ConsumerMapFragment
中使用 XML 与云端地图样式设置搭配使用,请添加包含指定 mapId
的 map:mapId
XML 属性。请参阅以下示例:
<fragment
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
android:name="com.google.android.libraries.mapsplatform.transportation.consumer.view.ConsumerMapFragment"
android:id="@+id/consumer_map_fragment"
map:mapId="map-id"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
使用 newInstance
动态更新
如需在 ConsumerMapFragment
中将云端地图样式设置与 newInstance
搭配使用,请在 GoogleMapOptions
上设置 mapId
字段,并将 GoogleMapOptions
传递给 newInstance
。请参阅以下示例:
Java
public class SampleFragmentJ extends Fragment {
@Override
public View onCreateView(
@NonNull LayoutInflater inflater,
@Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
final View view = inflater.inflate(R.layout.consumer_map_fragment, container, false);
GoogleMapOptions optionsWithMapId = new GoogleMapOptions().mapId("map-id");
ConsumerMapFragment consumerMapFragment = ConsumerMapFragment.newInstance(optionsWithMapId);
getParentFragmentManager()
.beginTransaction()
.add(R.id.consumer_map_fragment, consumerMapFragment)
.commit();
consumerMapFragment.getConsumerGoogleMapAsync(
new ConsumerMapReadyCallback() {
@Override
public void onConsumerMapReady(@NonNull ConsumerGoogleMap consumerGoogleMap) {
// ...
}
});
return view;
}
}
Kotlin
class SampleFragment : Fragment() {
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?): View? {
val view = inflater.inflate(R.layout.consumer_map_fragment, container, false)
val optionsWithMapId = GoogleMapOptions().mapId("map-id")
val consumerMapFragment = ConsumerMapFragment.newInstance(optionsWithMapId)
parentFragmentManager
.beginTransaction()
.add(R.id.consumer_map_fragment, consumerMapFragment)
.commit()
consumerMapFragment.getConsumerGoogleMapAsync(
object : ConsumerMapReadyCallback() {
override fun onConsumerMapReady(consumerGoogleMap: ConsumerGoogleMap) {
// ...
}
})
return view
}
}
如需将地图样式应用于 JavaScript 消费者行程分享地图,请在创建 JourneySharingMapView
时指定 mapId
和任何其他 mapOptions
。
以下示例展示了如何通过地图 ID 应用地图样式。
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.
});
直接在您自己的代码中设置地图样式
您还可以在创建 JourneySharingMapView
时设置地图选项,以自定义地图样式。以下示例展示了如何使用地图选项设置地图样式。如需详细了解您可以设置哪些地图选项,请参阅 Google Maps JavaScript API 参考文档中的 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" }
]
}
]
}
});
停用自动修剪
您可以停用自动调整功能,让地图不再自动将视口调整为适合车辆和预计路线的大小。以下示例展示了如何在配置行程共享地图视图时停用自动适应功能。
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,
...
});
替换现有地图
您可以替换包含标记或其他自定义设置的现有地图,而不会丢失这些自定义设置。
例如,假设您有一个网页,其中包含一个标准的 google.maps.Map
实体,该实体上显示了标记:
<!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>
如需添加 JavaScript 车队轨道库,请执行以下操作:
- 添加身份验证令牌工厂的代码。
- 在
initMap()
函数中初始化位置信息提供程序。 - 在
initMap()
函数中初始化地图视图。该视图包含地图。 - 将自定义内容移至地图视图初始化的回调函数中。
- 将位置信息库添加到 API 加载器。
使用计划任务的地图替换示例
以下示例展示了如何使用现有映射,在其中为安排的任务用例初始化位置信息提供程序对象。按需行程用例的代码类似,只不过您使用的是 FleetEngineVehicleLocationProvider
,而不是 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 39 号码头附近运营指定 ID 的货车,则地图现在会呈现在地图上。