Siapkan kendaraan
Tetap teratur dengan koleksi
Simpan dan kategorikan konten berdasarkan preferensi Anda.
Bagian ini menunjukkan cara menyiapkan kendaraan untuk tugas terjadwal. Anda harus
menyelesaikan setiap langkah berikut sebelum backend Anda dapat mencocokkan kendaraan dengan
tugas.
Menyiapkan pemroses
Karena Driver SDK melakukan tindakan di latar belakang, gunakan DriverStatusListener untuk memicu notifikasi saat peristiwa tertentu terjadi, seperti error, peringatan, atau pesan debug. Error dapat bersifat sementara (seperti BACKEND_CONNECTIVITY_ERROR), atau dapat menyebabkan pembaruan lokasi berhenti secara permanen. Misalnya, jika Anda menerima error
VEHICLE_NOT_FOUND, hal ini menunjukkan error konfigurasi.
Contoh berikut menunjukkan penerapan DriverStatusListener:
class MyStatusListener implements DriverStatusListener {
/** Called when background status is updated, during actions such as location reporting. */
@Override
public void updateStatus(
StatusLevel statusLevel, StatusCode statusCode, String statusMsg, @Nullable Throwable cause) {
// Existing implementation
if (cause != null && cause instanceof StatusRuntimeException) {
if (Status.NOT_FOUND.getCode().equals(cause.getStatus().getCode())) {
// NOT_FOUND gRPC exception thrown by Fleet Engine.
}
}
}
}
DriverContextBuilder.setDriverStatusListener(new MyStatusListener());
Mengaktifkan pembaruan lokasi
Setelah memiliki instance *VehicleReporter, aktifkan pembaruan lokasi sebagai berikut:
Java
DeliveryVehicleReporter reporter = ...;
reporter.enableLocationTracking();
Kotlin
val reporter = ...
reporter.enableLocationTracking()
(Opsional) Menyetel interval pembaruan
Secara default, Driver SDK mengirimkan pembaruan lokasi dengan interval 10 detik. Setiap
update lokasi juga menunjukkan bahwa kendaraan sedang online. Anda dapat mengubah interval ini dengan reporter.setLocationReportingInterval(long, TimeUnit). Interval update minimum yang didukung adalah 5 detik. Pembaruan yang lebih sering dapat mengakibatkan permintaan dan error yang lebih lambat.
Kecuali dinyatakan lain, konten di halaman ini dilisensikan berdasarkan Lisensi Creative Commons Attribution 4.0, sedangkan contoh kode dilisensikan berdasarkan Lisensi Apache 2.0. Untuk mengetahui informasi selengkapnya, lihat Kebijakan Situs Google Developers. Java adalah merek dagang terdaftar dari Oracle dan/atau afiliasinya.
Terakhir diperbarui pada 2025-08-31 UTC.
[null,null,["Terakhir diperbarui pada 2025-08-31 UTC."],[[["\u003cp\u003eBefore tasks can be assigned, vehicles must be prepared by completing setup steps that enable communication with the backend system.\u003c/p\u003e\n"],["\u003cp\u003eA \u003ccode\u003eDriverStatusListener\u003c/code\u003e is implemented to receive notifications regarding the vehicle's status, including errors, warnings, and debug messages.\u003c/p\u003e\n"],["\u003cp\u003eLocation updates are enabled using the \u003ccode\u003eenableLocationTracking()\u003c/code\u003e method of a \u003ccode\u003e*VehicleReporter\u003c/code\u003e instance, ensuring the backend knows the vehicle's position.\u003c/p\u003e\n"],["\u003cp\u003eOptionally, the frequency of location updates can be customized, but it's recommended to keep it at the default 10-second interval or above to avoid performance issues.\u003c/p\u003e\n"]]],[],null,["# Get the vehicle ready\n\nThis section shows how to get the vehicle ready for scheduled tasks. You must\ncomplete each of the following steps before your backend can match a vehicle to\na task.\n\nSet up listener\n---------------\n\nSince the Driver SDK performs actions in the\nbackground, use the `DriverStatusListener` to trigger notifications when certain\nevents occur, such as errors, warnings, or debug messages. Errors can be\ntransient in nature (such as `BACKEND_CONNECTIVITY_ERROR`), or they might\ncause location updates to stop permanently. For example, if you receive a\n`VEHICLE_NOT_FOUND` error, it indicates a configuration error.\n\nThe following example shows a `DriverStatusListener` implementation: \n\n class MyStatusListener implements DriverStatusListener {\n /** Called when background status is updated, during actions such as location reporting. */\n @Override\n public void updateStatus(\n StatusLevel statusLevel, StatusCode statusCode, String statusMsg, @Nullable Throwable cause) {\n // Existing implementation\n\n if (cause != null && cause instanceof StatusRuntimeException) {\n if (Status.NOT_FOUND.getCode().equals(cause.getStatus().getCode())) {\n // NOT_FOUND gRPC exception thrown by Fleet Engine.\n }\n }\n }\n }\n\n DriverContextBuilder.setDriverStatusListener(new MyStatusListener());\n\nEnable location updates\n-----------------------\n\nOnce you have a `*VehicleReporter` instance, enable location updates as follows: \n\n### Java\n\n DeliveryVehicleReporter reporter = ...;\n\n reporter.enableLocationTracking();\n\n### Kotlin\n\n val reporter = ...\n\n reporter.enableLocationTracking()\n\n### (Optional) Set the update interval\n\nBy default, the Driver SDK sends location updates at 10-second intervals. Each\nlocation update also indicates that the vehicle is online. You can change this\ninterval with\n`reporter.setLocationReportingInterval(long, TimeUnit)`. The minimum supported\nupdate interval is 5 seconds. More frequent updates may result in slower\nrequests and errors."]]
