如要開始將車輛更新傳送至 Fleet Engine 和客戶後端，請建立包含 providerID、vehicleID、driverContext 和 accessTokenProvider 的 GMTDDeliveryDriverAPI 執行個體。
providerID 與 Google Cloud 專案的專案 ID 相同。如要瞭解如何設定 Google Cloud 專案，請參閱「建立 Fleet Engine 專案」一文。
以下範例說明如何建立 GMTDDeliveryDriverAPI 例項。
Objective-C
#import "SampleViewController.h"
#import "SampleAccessTokenProvider.h"
#import <GoogleRidesharingDriver/GoogleRidesharingDriver.h>
static NSString *const PROVIDER_ID = @"INSERT_YOUR_PROVIDER_ID";
@implementation SampleViewController {
GMSMapView *_mapView;
}
- (void)viewDidLoad {
NSString *vehicleID = @"INSERT_CREATED_VEHICLE_ID";
SampleAccessTokenProvider *accessTokenProvider =
[[SampleAccessTokenProvider alloc] init];
GMTDDriverContext *driverContext =
[[GMTDDriverContext alloc] initWithAccessTokenProvider:accessTokenProvider
providerID:PROVIDER_ID
vehicleID:vehicleID
navigator:_mapView.navigator];
GMTDDeliveryDriverAPI *deliveryDriverAPI = [[GMTDDeliveryDriverAPI alloc] initWithDriverContext:driverContext];
}