適用於 Android 4.0 版的 Driver SDK 要求你更新程式碼 對某些作業執行特定作業本指南將概述變更內容以及 您不需要遷移程式碼
變更套件名稱
套件名稱已變更為
com.google.android.libraries.ridesharing.driver
到
com.google.android.libraries.mapsplatform.transportation.driver
。請
更新程式碼中的參照
初始化 SDK
在先前的版本中,您會初始化 Navigation SDK,然後取得
FleetEngine
類別的參照。在驅動程式 SDK 中
第 4 版是否已初始化 SDK,如下所示:
從
NavigationApi
取得Navigator
物件。NavigationApi.getNavigator( this, // Activity new NavigationApi.NavigatorListener() { @Override public void onNavigatorReady(Navigator navigator) { // Keep a reference to the Navigator (used to configure and start nav) this.navigator = navigator; } } );
建立
DriverContext
物件,並填入必填欄位。DriverContext driverContext = DriverContext.builder(application) .setProviderId(providerId) .setVehicleId(vehicleId) .setAuthTokenFactory(authTokenFactory) .setNavigator(navigator) .setRoadSnappedLocationProvider( NavigationApi.getRoadSnappedLocationProvider(application)) .build();
使用
DriverContext
物件初始化*DriverApi
。RidesharingDriverApi ridesharingDriverApi = RidesharingDriverApi.createInstance(driverContext);
從 API 物件取得
NavigationVehicleReporter
。*VehicleReporter
可擴充NavigationVehicleReporter
。RidesharingVehicleReporter vehicleReporter = ridesharingDriverApi.getRidesharingVehicleReporter();
啟用及停用位置更新通知
在舊版中,您必須在取得
FleetEngine
參照。在驅動程式 SDK v4 中,啟用
位置更新如下:
RidesharingVehicleReporter reporter = ...;
reporter.enableLocationTracking();
如要更新報表間隔,請使用
RidesharingVehicleReporter.setLocationReportingInterval(long, TimeUnit)
。
駕駛完班後,停用位置更新功能
並呼叫 NavigationVehicleReporter.disableLocationTracking()
將車輛標示為離線。
在伺服器上設定車輛狀態
在先前的版本中,您會使用 FleetEngine
物件來設定
例如車輛狀態在驅動程式 SDK v4 中,使用
RidesharingVehicleReporter
物件來設定車輛狀態:
RidesharingVehicleReporter reporter = ...;
reporter.enableLocationTracking();
reporter.setVehicleState(VehicleState.ONLINE);
如要將車輛狀態設為 OFFLINE
,請呼叫
RidesharingVehicleReporter.disableLocationTracking()
。錯誤數
更新車輛狀態,可視需求提供的
已在 DriverContext
中設定 StatusListener
。
使用 StatusListener 的 Error Reporting
已移除 ErrorListener
,並與 StatusListener
結合。
可以採用以下定義:
class MyStatusListener implements StatusListener {
/** Called when background status is updated, during actions such as location reporting. */
@Override
public void updateStatus(
StatusLevel statusLevel, StatusCode statusCode, String statusMsg) {
// Status handling stuff goes here.
// StatusLevel may be DEBUG, INFO, WARNING, or ERROR.
// StatusCode may be DEFAULT, UNKNOWN_ERROR, VEHICLE_NOT_FOUND,
// BACKEND_CONNECTIVITY_ERROR, or PERMISSION_DENIED.
}
}
使用 AuthTokenFactory
進行驗證
AuthTokenFactory
現在只有 getToken()
方法,
AuthTokenContext
做為參數。ServiceType
已淘汰你現在
只需取得所含車輛 ID 理賠,而非依賴
ServiceType
。
class JsonAuthTokenFactory implements AuthTokenFactory {
private String token; // initially null
private long expiryTimeMs = 0;
// This method is called on a thread whose only responsibility is to send
// location updates. Blocking is OK, but just know that no location updates
// can occur until this method returns.
@Override
public String getToken(AuthTokenContext authTokenContext) {
if (System.currentTimeMillis() > expiryTimeMs) {
// The token has expired, go get a new one.
fetchNewToken(authTokenContext.getVehicleId());
}
return token;
}
private void fetchNewToken(String vehicleId) {
String url = "https://yourauthserver.example/token/" + vehicleId;
try (Reader r = new InputStreamReader(new URL(url).openStream())) {
com.google.gson.JsonObject obj
= com.google.gson.JsonParser.parseReader(r).getAsJsonObject();
token = obj.get("Token").getAsString();
expiryTimeMs = obj.get("TokenExpiryMs").getAsLong();
// The expiry time could be an hour from now, but just to try and avoid
// passing expired tokens, we subtract 10 minutes from that time.
expiryTimeMs -= 10 * 60 * 1000;
} catch (IOException e) {
// It's OK to throw exceptions here. The StatusListener you passed to
// create the DriverContext class is notified, and passes along the failed
// update warning.
throw new RuntimeException("Could not get auth token", e);
}
}
}