staticfinalStringPROJECT_ID="project-id";staticfinalStringVEHICLE_ID="vid-8241890";VehicleServiceBlockingStubvehicleService=VehicleService.newBlockingStub(channel);StringvehicleName="providers/"+PROJECT_ID+"/vehicles/"+VEHICLE_ID;VehicleupdatedVehicle=Vehicle.newBuilder().setLastLocation(VehicleLocation.newBuilder().setSupplementalLocation(LatLng.newBuilder().setLatitude(37.3382).setLongitude(121.8863)).setSupplementalLocationTime(now()).setSupplementalLocationSensor(LocationSensor.CUSTOMER_SUPPLIED_LOCATION).setSupplementalLocationAccuracy(DoubleValue.of(15.0)))// Optional.build();UpdateVehicleRequestupdateVehicleRequest=UpdateVehicleRequest.newBuilder().setName(vehicleName).setVehicle(updatedVehicle).setUpdateMask(FieldMask.newBuilder().addPaths("last_location")).build();try{VehicleupdatedVehicle=vehicleService.updateVehicle(updateVehicleRequest);}catch(StatusRuntimeExceptione){Statuss=e.getStatus();switch(s.getCode()){caseNOT_FOUND:// Most implementations will call CreateVehicle in this casebreak;casePERMISSION_DENIED:break;}return;}// If no Exception, Vehicle updated successfully.
[null,null,["最后更新时间 (UTC)：2025-08-31。"],[[["\u003cp\u003eFleet Engine requires frequent vehicle location updates for optimal performance, achievable through the Driver SDK or custom code.\u003c/p\u003e\n"],["\u003cp\u003eThe Driver SDK is the simplest method for location updates, with dedicated documentation for Android and iOS.\u003c/p\u003e\n"],["\u003cp\u003eFor custom solutions, direct calls to Fleet Engine can be made with location data, requiring updates every 5 seconds to 1 minute.\u003c/p\u003e\n"],["\u003cp\u003eVehicles can be updated using REST or client libraries, with code examples provided for both Java and REST.\u003c/p\u003e\n"]]],[],null,["# Update a vehicle location\n\n| **Note:** **Before constructing a vehicle request** , read the requirements under [Vehicle requests](/maps/documentation/mobility/fleet-engine/essentials/vehicles#vehicle_requests) in the Introduction.\n\nFor the best performance with Fleet Engine, provide it with a stream of vehicle\nlocation updates. Use either of the following ways to provide these updates:\n\n1. **Use the Driver SDK** : simplest option. See the Driver SDK documentation for [Android](/maps/documentation/mobility/driver-sdk/on-demand/android/minimum-requirements) or [iOS](//maps/documentation/mobility/driver-sdk/on-demand/ios/minimum-requirements).\n2. **Use custom code**: useful if locations are relayed through your backend, or if you use devices other than Android or iOS. This guide covers that approach.\n\nIf not using the Driver SDK to update the vehicle's location, you can make a\ndirect call to Fleet Engine with the vehicle's location. For any active vehicle,\nFleet Engine expects a location update at least once every minute and at most\nonce every 5 seconds. These updates require only *Fleet Engine Driver SDK User*\nprivileges.\n\nUpdate vehicle location example\n-------------------------------\n\n### Java\n\n static final String PROJECT_ID = \"\u003cvar translate=\"no\"\u003eproject-id\u003c/var\u003e\";\n static final String VEHICLE_ID = \"\u003cvar translate=\"no\"\u003evid-8241890\u003c/var\u003e\";\n\n VehicleServiceBlockingStub vehicleService = VehicleService.newBlockingStub(channel);\n\n String vehicleName = \"providers/\" + PROJECT_ID + \"/vehicles/\" + VEHICLE_ID;\n Vehicle updatedVehicle = Vehicle.newBuilder()\n .setLastLocation(VehicleLocation.newBuilder()\n .setSupplementalLocation(LatLng.newBuilder()\n .setLatitude(37.3382)\n .setLongitude(121.8863))\n .setSupplementalLocationTime(now())\n .setSupplementalLocationSensor(LocationSensor.CUSTOMER_SUPPLIED_LOCATION)\n .setSupplementalLocationAccuracy(DoubleValue.of(15.0))) // Optional\n .build();\n\n UpdateVehicleRequest updateVehicleRequest = UpdateVehicleRequest.newBuilder()\n .setName(vehicleName)\n .setVehicle(updatedVehicle)\n .setUpdateMask(FieldMask.newBuilder()\n .addPaths(\"last_location\"))\n .build();\n\n try {\n Vehicle updatedVehicle =\n vehicleService.updateVehicle(updateVehicleRequest);\n } catch (StatusRuntimeException e) {\n Status s = e.getStatus();\n switch (s.getCode()) {\n case NOT_FOUND:\n // Most implementations will call CreateVehicle in this case\n break;\n case PERMISSION_DENIED:\n break;\n }\n return;\n }\n // If no Exception, Vehicle updated successfully.\n\n### REST\n\n curl -X PUT \\\n \"https://fleetengine.googleapis.com/v1/providers/\u003cvar translate=\"no\"\u003eproject-id\u003c/var\u003e/vehicles/\u003cvar translate=\"no\"\u003evid-8241890\u003c/var\u003e?updateMask=last_location\" \\\n -H \"Authorization: Bearer $JWT\" \\\n -H \"Content-Type: application/json\" \\\n --data-binary @- \u003c\u003c EOM\n {\n \"supplementalLocation\": {\"latitude\": 12.1, \"longitude\": 14.5},\n \"supplementalLocationTime\": \"$(date -u --iso-8601=seconds)\",\n \"supplementalLocationSensor\": \"CUSTOMER_SUPPLIED_LOCATION\",\n \"supplementalLocationAccuracy\": 15\n }\n EOM\n\nSee [providers.vehicles.update](/maps/documentation/mobility/fleet-engine/reference/trips/rest/v1/providers.vehicles/update) reference.\n\nWhat's next\n-----------\n\n- [Get a vehicle](/maps/documentation/mobility/fleet-engine/essentials/vehicles/on-demand-get-vehicle)"]]
