Package org.opencabstandard.provider

Class VehicleInformationContract

java.lang.Object

org.opencabstandard.provider.VehicleInformationContract

public final class VehicleInformationContract
extends java.lang.Object

Defines the contract for the OpenCab Vehicle Information provider. An OpenCab Vehicle Information provider app should define an Android ContentProvider class that follows this contract or should subclass the AbstractVehicleInformationProvider class and implement the abstract methods.

sequenceDiagram participant A as OpenCab Consumer participant B as OpenCab Provider Note over A,B: consumer app launches, no driver logged in A->>+B: provider.call(METHOD_GET_VEHICLE_INFORMATION, version: 1) B->>A: {VEHICLE_INFORMATION: null} Note over A,B: driver logs in or connects to a vehicle mount B->>A: ACTION_VEHICLE_INFORMATION_CHANGED A->>+B: provider.call(METHOD_GET_VEHICLE_INFORMATION, version: 1) B->>A: {VEHICLE_INFORMATION: {VIN: "JH4NA1150RT000268", inGear: false}} Note over A,B: driver switches to D status or puts vehicle in gear B->>A: ACTION_VEHICLE_INFORMATION_CHANGED A->>+B: provider.call(METHOD_GET_VEHICLE_INFORMATION, version: 1) B->>A: {VEHICLE_INFORMATION: {VIN: "JH4NA1150RT000268", inGear: true}} Note over A,B: driver logs out or detaches tablet B->>A: ACTION_VEHICLE_INFORMATION_CHANGED A->>+B: provider.call(METHOD_GET_VEHICLE_INFORMATION, version: 1) B->>A: {VEHICLE_INFORMATION: null}

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	VehicleInformationContract.VehicleInformation	Object containing the vehicle information.

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	ACTION_VEHICLE_INFORMATION_CHANGED	This Action is broadcast when the vehicle information changes, perhaps because the driver chooses to associate with another vehicle, or if the device removed from a vehicle in a slip-seat scenario.
static java.lang.String	AUTHORITY	This authority is declared in the manifest for the app that acts as the vehicle information provider.
static java.lang.String	KEY_ERROR	If an error has occurred in one of the provider method calls, use this key to retrieve the error from the Bundle object returned from the provider call method.
static java.lang.String	KEY_VEHICLE_INFORMATION	Use this key to retrieve the VIN from the Bundle object that is returned from the VehicleInformationContract.METHOD_GET_VEHICLE_INFORMATION method call.
static java.lang.String	METHOD_GET_VEHICLE_INFORMATION	Provider method for retrieving the vehicle information.
static java.lang.String	VERSION	This is the current version of the VehicleInformationContract for the OpenCab Standard.

Constructor Summary

Constructors

Constructor	Description
VehicleInformationContract()

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

VERSION

public static final java.lang.String VERSION

This is the current version of the VehicleInformationContract for the OpenCab Standard. The version will be passed as an argument to all method calls to the provider. The provider may reject or handle appropriately if the VERSION does not match the expected value. An OpenCab vehicle information provider allows access to details about the vehicle, if any, associated with the mobile device running the app or associated with the driver who is logged into the mobile app.

See Also:

Constant Field Values

AUTHORITY

public static final java.lang.String AUTHORITY

This authority is declared in the manifest for the app that acts as the vehicle information provider. It is then used by the consumer app to identify any providers installed on the device.

See Also:

Constant Field Values

ACTION_VEHICLE_INFORMATION_CHANGED

public static final java.lang.String ACTION_VEHICLE_INFORMATION_CHANGED

This Action is broadcast when the vehicle information changes, perhaps because the driver chooses to associate with another vehicle, or if the device removed from a vehicle in a slip-seat scenario.

See Also:

Constant Field Values

METHOD_GET_VEHICLE_INFORMATION

public static final java.lang.String METHOD_GET_VEHICLE_INFORMATION

Provider method for retrieving the vehicle information.

Example:

 

     ContentResolver resolver = getApplicationContext().getContentResolver();
     Bundle result = resolver.call(Uri.parse("content://" + VehicleInformationContract.AUTHORITY),
                                  VehicleInformationContract.METHOD_GET_VEHICLE_INFORMATION,
                                  VehicleInformationContract.VERSION,
                                  null);
     VehicleInformationContract.VehicleInformation info = result.getParcelableArrayList(VehicleInformationContract.KEY_VEHICLE_INFORMATION);
 
 

See Also:

Constant Field Values

KEY_VEHICLE_INFORMATION

public static final java.lang.String KEY_VEHICLE_INFORMATION

Use this key to retrieve the VIN from the Bundle object that is returned from the VehicleInformationContract.METHOD_GET_VEHICLE_INFORMATION method call. If the value is null, an error occurred and you can then retrieve the error from the Bundle using the key VehicleInformationContract.KEY_ERROR.

Example:

 

     ContentResolver resolver = getApplicationContext().getContentResolver();
     Bundle result = resolver.call(Uri.parse("content://" + VehicleInformationContract.AUTHORITY),
                                  VehicleInformationContract.METHOD_GET_VEHICLE_INFORMATION,
                                  VehicleInformationContract.VERSION,
                                  null);
     VehicleInformationContract.VehicleInformation info = result.getParcelableArrayList(VehicleInformationContract.KEY_VEHICLE_INFORMATION);
 
 

See Also:

Constant Field Values

KEY_ERROR

public static final java.lang.String KEY_ERROR

If an error has occurred in one of the provider method calls, use this key to retrieve the error from the Bundle object returned from the provider call method.

Example:

 
     Bundle result = provider.call(Uri.parse("content://" + VehicleInformationContract.AUTHORITY),
                                  "ANY METHOD",
                                  VehicleInformationContract.VERSION,
                                  null);
     String error = result.getString(VehicleInformationContract.KEY_ERROR);
 
 

See Also:

Constant Field Values

Constructor Detail

VehicleInformationContract

public VehicleInformationContract()