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Configurare gli ascoltatori
Dopo aver inizializzato Driver SDK e creato un'istanza di GMTDDeliveryDriverAPI, puoi configurare i listener di eventi per monitorare l'esito positivo o negativo degli aggiornamenti del veicolo inviati a Fleet Engine e al tuo backend. Questi listener possono
attivare azioni all'interno dell'app per i conducenti, ad esempio inviare una notifica al conducente se
la comunicazione con il backend non va a buon fine.
Ascolta gli eventi di aggiornamento del veicolo
Quando l'autista attiva gli aggiornamenti della posizione nell'app per i conducenti, l'SDK Driver invia
aggiornamenti regolari del veicolo a Fleet Engine e al backend del cliente tramite la
classe GMTDDeliveryVehicleReporter. Puoi fare in modo che l'app risponda agli eventi di aggiornamento
configurando il protocollo GMTDVehicleReporterListener.
Con GMTDVehicleReporterListener, puoi gestire i seguenti eventi:
vehicleReporter:didSucceedVehicleUpdate
Comunica all'app Driver che i servizi di backend hanno ricevuto correttamente l'aggiornamento
della posizione e dello stato del veicolo.
vehicleReporter:didFailVehicleUpdate:withError
Informa l'ascoltatore che l'aggiornamento del veicolo non è riuscito. Se gli aggiornamenti della posizione sono attivi, la classe GMTDDeliveryVehicleReporter continua a inviare i dati più recenti a Fleet Engine.
L'esempio seguente mostra come configurare GMTDVehicleReporterListener per
gestire questi eventi:
Swift
importGoogleRidesharingDriverprivateletproviderID="INSERT_YOUR_PROVIDER_ID"classSampleViewController:UIViewController,GMTDVehicleReporterListener{privateletmapView:GMSMapViewoverridefuncviewDidLoad(){// Assumes you have implemented the sample code up to this step.deliveryDriverAPI.vehicleReporter.add(self)}funcvehicleReporter(_vehicleReporter:GMTDDeliveryVehicleReporter,didSucceedvehicleUpdate:GMTDVehicleUpdate){// Handle update succeeded.}funcvehicleReporter(_vehicleReporter:GMTDDeliveryVehicleReporter,didFailvehicleUpdate:GMTDVehicleUpdate,withErrorerror:Error){// Handle update failed.}}
Objective-C
SampleViewController.h@interfaceSampleViewController : UIViewController<GMTDVehicleReporterListener>@endSampleViewController.m#import "SampleViewController.h"#import "SampleAccessTokenProvider.h"#import <GoogleRidesharingDriver/GoogleRidesharingDriver.h>staticNSString*constPROVIDER_ID=@"INSERT_YOUR_PROVIDER_ID";@implementationSampleViewController{GMSMapView*_mapView;}-(void)viewDidLoad{// ASSUMES YOU IMPLEMENTED HAVE THE SAMPLE CODE UP TO THIS STEP.[delivervehicleReporteraddListener:self];}-(void)vehicleReporter:(GMTDDeliveryVehicleReporter*)vehicleReporterdidSucceedVehicleUpdate:(GMTDVehicleUpdate*)vehicleUpdate{// Handle update succeeded.}-(void)vehicleReporter:(GMTDDeliveryVehicleReporter*)vehicleReporterdidFailVehicleUpdate:(GMTDVehicleUpdate*)vehicleUpdatewithError:(NSError*)error{// Handle update failed.}@end
Attivare gli aggiornamenti della posizione
Per attivare gli aggiornamenti della posizione, nell'app per i conducenti su
GMTDDeliveryVehicleReporter, imposta locationTrackingEnabled su
YES. Poi la classe
GMTDDeliveryVehicleReporter invia automaticamente gli aggiornamenti della posizione a
Fleet Engine. Inoltre, quando GMSNavigator è in modalità di navigazione, ovvero quando viene impostata una destinazione tramite setDestinations, la classe GMTDDeliveryVehicleReporter invia automaticamente aggiornamenti sul percorso e sull'orario di arrivo stimato.
L'SDK Driver imposta l'itinerario in modo che corrisponda al percorso di navigazione attuale del conducente. Per
garantire aggiornamenti precisi della posizione, imposta il waypoint in
-setDestinations:callback: in modo che corrisponda alla destinazione in Fleet Engine.
Il seguente esempio mostra come attivare gli aggiornamenti della posizione:
Swift
importGoogleRidesharingDriverprivateletproviderID="INSERT_YOUR_PROVIDER_ID"classSampleViewController:UIViewController,GMTDVehicleReporterListener{privateletmapView:GMSMapViewoverridefuncviewDidLoad(){// Assumes you have implemented the sample code up to this step.deliveryDriverAPI.vehicleReporter.locationTrackingEnabled=true}}
Objective-C
SampleViewController.m#import "SampleViewController.h"#import "SampleAccessTokenProvider.h"#import <GoogleRidesharingDriver/GoogleRidesharingDriver.h>staticNSString*constPROVIDER_ID=@"INSERT_YOUR_PROVIDER_ID";@implementationSampleViewController{GMSMapView*_mapView;}-(void)viewDidLoad{// ASSUMES YOU HAVE IMPLEMENTED THE SAMPLE CODE UP TO THIS STEP.deliveryDriverAPI.vehicleReporter.locationTrackingEnabled=YES;}@end
(Facoltativo) Imposta l'intervallo di aggiornamento
Per impostazione predefinita, quando imposti locationTrackingEnabled su YES, l'SDK Driver
invia aggiornamenti della posizione a Fleet Engine a intervalli di 10 secondi. Puoi modificare
l'intervallo di aggiornamento con locationUpdateInterval fino a un intervallo di aggiornamento minimo
di 5 secondi o un massimo di 60 secondi. Aggiornamenti più frequenti possono comportare
richieste più lente ed errori.
[[["Facile da capire","easyToUnderstand","thumb-up"],["Il problema è stato risolto","solvedMyProblem","thumb-up"],["Altra","otherUp","thumb-up"]],[["Mancano le informazioni di cui ho bisogno","missingTheInformationINeed","thumb-down"],["Troppo complicato/troppi passaggi","tooComplicatedTooManySteps","thumb-down"],["Obsoleti","outOfDate","thumb-down"],["Problema di traduzione","translationIssue","thumb-down"],["Problema relativo a esempi/codice","samplesCodeIssue","thumb-down"],["Altra","otherDown","thumb-down"]],["Ultimo aggiornamento 2025-09-05 UTC."],[[["\u003cp\u003eThe Google Maps Delivery Driver SDK enables you to set up listeners to monitor the success or failure of vehicle updates sent to Fleet Engine and your backend.\u003c/p\u003e\n"],["\u003cp\u003eYou can listen for vehicle update events such as successful updates and failures, and trigger actions within your driver app accordingly.\u003c/p\u003e\n"],["\u003cp\u003eEnable location updates in the driver app to automatically send regular location and state updates to Fleet Engine and the customer backend.\u003c/p\u003e\n"],["\u003cp\u003eYou can optionally adjust the location update interval, with a default of 10 seconds and a range between 5 and 60 seconds.\u003c/p\u003e\n"],["\u003cp\u003eEnsure the waypoint in \u003ccode\u003esetDestinations\u003c/code\u003e matches the destination in Fleet Engine for accurate location updates during navigation.\u003c/p\u003e\n"]]],[],null,["# Get the vehicle ready\n\nSet up listeners\n----------------\n\nAfter initializing the Driver SDK and creating a `GMTDDeliveryDriverAPI`\ninstance, you can set up event listeners to monitor the success or failure of\nvehicle updates sent to Fleet Engine and your backend. These listeners can\ntrigger actions within your driver app, such as notifying the driver if\ncommunication with your backend fails.\n\n### Listen for vehicle update events\n\nWhen the driver enables location updates in the driver app, the Driver SDK sends\nregular vehicle updates to Fleet Engine and the customer backend through the\n`GMTDDeliveryVehicleReporter` class. You can have the app respond to update\nevents by setting up the `GMTDVehicleReporterListener` protocol.\n\nWith `GMTDVehicleReporterListener`, you can handle the following events:\n\n- `vehicleReporter:didSucceedVehicleUpdate`\n\n Informs the Driver app that the backend services successfully received the\n vehicle location and state update.\n- `vehicleReporter:didFailVehicleUpdate:withError`\n\n Informs the listener that a vehicle update failed. As long as the driver has\n location updates enabled, the `GMTDDeliveryVehicleReporter` class continues\n to send the latest data to Fleet Engine.\n\nThe following example shows how to set up `GMTDVehicleReporterListener` to\nhandle these events: \n\n### Swift\n\n import GoogleRidesharingDriver\n\n private let providerID = \"INSERT_YOUR_PROVIDER_ID\"\n\n class SampleViewController: UIViewController, GMTDVehicleReporterListener {\n private let mapView: GMSMapView\n\n override func viewDidLoad() {\n // Assumes you have implemented the sample code up to this step.\n deliveryDriverAPI.vehicleReporter.add(self)\n }\n\n func vehicleReporter(_ vehicleReporter: GMTDDeliveryVehicleReporter, didSucceed vehicleUpdate: GMTDVehicleUpdate) {\n // Handle update succeeded.\n }\n\n func vehicleReporter(_ vehicleReporter: GMTDDeliveryVehicleReporter, didFail vehicleUpdate: GMTDVehicleUpdate, withError error: Error) {\n // Handle update failed.\n }\n }\n\n### Objective-C\n\n SampleViewController.h\n @interface SampleViewController : UIViewController\u003cGMTDVehicleReporterListener\u003e\n @end\n\n SampleViewController.m\n #import \"SampleViewController.h\"\n #import \"SampleAccessTokenProvider.h\"\n #import \u003cGoogleRidesharingDriver/GoogleRidesharingDriver.h\u003e\n\n static NSString *const PROVIDER_ID = @\"INSERT_YOUR_PROVIDER_ID\";\n\n @implementation SampleViewController {\n GMSMapView *_mapView;\n }\n\n - (void)viewDidLoad {\n // ASSUMES YOU IMPLEMENTED HAVE THE SAMPLE CODE UP TO THIS STEP.\n [delivervehicleReporter addListener:self];\n }\n\n - (void)vehicleReporter:(GMTDDeliveryVehicleReporter *)vehicleReporter didSucceedVehicleUpdate:(GMTDVehicleUpdate *)vehicleUpdate {\n // Handle update succeeded.\n }\n\n - (void)vehicleReporter:(GMTDDeliveryVehicleReporter *)vehicleReporter didFailVehicleUpdate:(GMTDVehicleUpdate *)vehicleUpdate withError:(NSError *)error {\n // Handle update failed.\n }\n\n @end\n\nEnable location updates\n-----------------------\n\nTo enable location updates, in the driver app on\n`GMTDDeliveryVehicleReporter`, set `locationTrackingEnabled` to\n`YES`. Then the\n`GMTDDeliveryVehicleReporter` class automatically sends location updates to\nFleet Engine. Additionally, when the `GMSNavigator` is in navigation mode, which\nis when a destination is set through `setDestinations`, the\n`GMTDDeliveryVehicleReporter` class automatically sends route and ETA updates.\n\nThe Driver SDK sets the route to match the driver's current navigation path. To\nensure accurate location updates, set the waypoint in\n`-setDestinations:callback:` to match the destination in Fleet Engine.\n\nThe following example shows how to enable location updates: \n\n### Swift\n\n import GoogleRidesharingDriver\n\n private let providerID = \"INSERT_YOUR_PROVIDER_ID\"\n\n class SampleViewController: UIViewController, GMTDVehicleReporterListener {\n private let mapView: GMSMapView\n\n override func viewDidLoad() {\n // Assumes you have implemented the sample code up to this step.\n deliveryDriverAPI.vehicleReporter.locationTrackingEnabled = true\n }\n }\n\n### Objective-C\n\n SampleViewController.m\n #import \"SampleViewController.h\"\n #import \"SampleAccessTokenProvider.h\"\n #import \u003cGoogleRidesharingDriver/GoogleRidesharingDriver.h\u003e\n\n static NSString *const PROVIDER_ID = @\"INSERT_YOUR_PROVIDER_ID\";\n\n @implementation SampleViewController {\n GMSMapView *_mapView;\n }\n\n - (void)viewDidLoad {\n // ASSUMES YOU HAVE IMPLEMENTED THE SAMPLE CODE UP TO THIS STEP.\n deliveryDriverAPI.vehicleReporter.locationTrackingEnabled = YES;\n }\n\n @end\n\n| **Note:** If the device has not moved since the last location update, the `GMSRoadSnappedLocationProvider` class does not send location updates continuously. For example, if a driver is waiting idle in the car. If you want to send a new location update, and have set `GMTDDeliveryVehicleReporter` as a listener after calling `startUpdatingLocation` on `GMSRoadSnappedLocationProvider`, you need to stop and start `GMSRoadSnappedLocationProvider`.\n\n### (Optional) Set the update interval\n\nBy default, when you set `locationTrackingEnabled` to `YES`, the Driver SDK\nsends location updates to Fleet Engine at a 10-second interval. You can change\nthe update interval with `locationUpdateInterval` to a minimum update interval\nof 5 seconds or a maximum of 60 seconds. More frequent updates may result in\nslower requests and errors."]]