The Driver SDK for Android 4.0 release requires that you update your code
for certain operations. This guide outlines the changes and what
you'll need to do to migrate your code.

## Package name change

The package name has changed from
`com.google.android.libraries.ridesharing.driver` to
`com.google.android.libraries.mapsplatform.transportation.driver`. Please
update references in your code.

## Initializing the SDK

In earlier versions, you would initialize the Navigation SDK and then obtain
a reference to the `FleetEngine` class. In Driver SDK
v4, initialize the SDK as follows:

1. Obtain a `Navigator` object from the `NavigationApi`.

   ```java
   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;
         }
       }
   );
   ```
2. Create a `DriverContext` object, populating the required fields.

   ```java
   DriverContext driverContext = DriverContext.builder(application)
       .setProviderId(providerId)
       .setVehicleId(vehicleId)
       .setAuthTokenFactory(authTokenFactory)
       .setNavigator(navigator)
       .setRoadSnappedLocationProvider(
           NavigationApi.getRoadSnappedLocationProvider(application))
       .build();
   ```
3. Use the `DriverContext` object to initialize the `*DriverApi`.

4. Obtain the `NavigationVehicleReporter` from the API object.
   `*VehicleReporter` extends `NavigationVehicleReporter`.

## Enabling and disabling location updates

In earlier versions, you would enable location updates after obtaining
a `FleetEngine` reference. In Driver SDK v4, enable
location updates as follows:

When the driver's shift is finished, disable location updates
and mark the vehicle as offline by calling `NavigationVehicleReporter.disableLocationTracking()`.

## Error Reporting with StatusListener

`ErrorListener` has been removed and combined with `StatusListener`,
which may be defined like the following:

```java
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.
  }
}
```