LocationEngineBase (API Reference)
Interface LocationEngineBase
- All Known Implementing Classes:
LocationEngine
Public interface that describes the behaviour of LocationEngine.
Implementation is platform-specific.
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Method Summary
Modifier and TypeMethodDescriptionvoidAdds aLocationIssueListenerto the engine to get notified when a location issue has occurred.voidaddLocationListener(LocationListener listener) Adds aLocationListenerto the engine to get notified when there is a new location update available.voidAdds aLocationStatusListenerto the engine to get notified when there is an important status change.By calling this method, the application developer confirms that they have received an exceptional permission from HERE in written form to not include a reference to the HERE Privacy Notice.It is the responsibility of the application developer to ensure that the application user is informed about the collection of characteristic information regarding nearby mobile and Wi-Fi network signals.voidDisables access to vehicle's sensor information.voidenableVehicleSensors(androidx.car.app.hardware.CarHardwareManager manager) This feature enables the utilization of the vehicle's GNSS and movement sensor information.Gets the last known location obtained by theLocationEngine.booleanChecks if the engine is in started state.voidRemoves aLocationIssueListenerfrom the engine.voidremoveLocationListener(LocationListener listener) Removes aLocationListenerfrom the engine.voidRemoves aLocationStatusListenerfrom the engine.setLastKnownLocationPersistent(boolean persistent) Enables or disables saving of last known location so that it persists between application sessions.start(LocationAccuracy locationAccuracy) Starts the location engine with desiredLocationAccuracy.start(LocationOptions locationOptions) Starts the location engine with desiredLocationOptions.voidstop()Stops the location engine.updateLocationAccuracy(LocationAccuracy locationAccuracy) Reconfigures the location engine with desiredLocationAccuracy.updateLocationOptions(LocationOptions locationOptions) Reconfigures the location engine with desiredLocationOptions.
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Method Details
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start
Starts the location engine with desired
LocationAccuracy. ReturnsLocationEngineStatus.ALREADY_STARTED, ifstart(LocationOptions)is called again withoutstop()in between. Make sure to call eitherconfirmHEREPrivacyNoticeInclusion()orconfirmHEREPrivacyNoticeException()beforehand.- Parameters:
locationAccuracy-Desired location accuracy. Requested accuracy is not guaranteed.
- Returns:
Engine status. Valid values are defined in
LocationEngineStatus
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start
Starts the location engine with desired
LocationOptions. ReturnsLocationEngineStatus.ALREADY_STARTED, ifstart(LocationOptions)is called again withoutstop()in between. Make sure to call eitherconfirmHEREPrivacyNoticeInclusion()orconfirmHEREPrivacyNoticeException()beforehand.- Parameters:
locationOptions-Desired location options.
- Returns:
Engine status. Valid values are defined in
LocationEngineStatus
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updateLocationAccuracy
Reconfigures the location engine with desired
LocationAccuracy. This method is a faster way to change location accuracy for already started location engine, than callingstop()andstart(LocationOptions)in sequence. ReturnsLocationEngineStatus.NOT_READY, if called for unstarted location engine.- Parameters:
locationAccuracy-Desired location accuracy. Requested accuracy is not guaranteed.
- Returns:
Engine status. Valid values are defined in
LocationEngineStatus
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updateLocationOptions
Reconfigures the location engine with desired
LocationOptions. This method is a faster way to change location options for already started location engine, than callingstop()andstart(LocationOptions)in sequence. ReturnsLocationEngineStatus.NOT_READY, if called for unstarted location engine.- Parameters:
locationOptions-Desired location options.
- Returns:
Engine status. Valid values are defined in
LocationEngineStatus
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stop
void stop()Stops the location engine.
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confirmHEREPrivacyNoticeInclusion
It is the responsibility of the application developer to ensure that the application user is informed about the collection of characteristic information regarding nearby mobile and Wi-Fi network signals. Additionally, a link to the related HERE Privacy Notice must be made available to the user.
This information can be included in the application's Terms & Conditions, Privacy Policy, or otherwise made accessible to the user.
An example text for informing users about the data collection: "This application uses location services provided by HERE Technologies. To maintain, improve, and provide these services, HERE Technologies occasionally collects characteristic information about nearby mobile and Wi-Fi network signals. For more information, please refer to the HERE Privacy Notice at: https://legal.here.com/en-gb/here-network-positioning-via-sdk"
Note: By calling this method, the application developer confirms that this information is made available to the end user.
For example, it is sufficient to inform users once that using the app requires acceptance of its terms (if any). Then, in the terms include the above mentioned data collection information and a link to the related HERE Privacy Notice. The user is not required to open the terms to acknowledge the data collection details. The "Positioning" example app on GitHub provides an example of this.
When the above criteria are met, it is recommended to silently execute this method each time before starting the
LocationEngine, as failure to do so will result in the engine being non-functional.- Returns:
Immediately returns with
ConfirmationStatus.OK.
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confirmHEREPrivacyNoticeException
By calling this method, the application developer confirms that they have received an exceptional permission from HERE in written form to not include a reference to the HERE Privacy Notice. As a result, the
LocationEnginewill not collect characteristic information about the nearby mobile and Wi-Fi network signals. However, the engine will still be fully functional and it will deliver location updates when the exception can be confirmed. Note that this call should not involve user interaction and it should be executed silently by the application before starting theLocationEngine.The permission for exceptional use will be verified asynchronously using your HERE SDK credentials. A missing permission will lead to stopping of the
LocationEngineandLocationEngineStatus.PRIVACY_NOTICE_UNCONFIRMEDis delivered toLocationStatusListener.- Returns:
Confirmation action status. Valid values are defined in
ConfirmationStatus. A first-time call may result inConfirmationStatus.PENDING, make sure to use theLocationStatusListenerto get notified on an unconfirmed permission.
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addLocationListener
Adds a
LocationListenerto the engine to get notified when there is a new location update available. Supports more than one listener, instance is added only once.- Parameters:
listener-The listener.
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removeLocationListener
Removes a
LocationListenerfrom the engine.- Parameters:
listener-The listener.
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addLocationStatusListener
Adds a
LocationStatusListenerto the engine to get notified when there is an important status change. Supports more than one listener, instance is added only once.- Parameters:
listener-The listener.
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removeLocationStatusListener
Removes a
LocationStatusListenerfrom the engine.- Parameters:
listener-The listener.
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addLocationIssueListener
Adds a
LocationIssueListenerto the engine to get notified when a location issue has occurred. Supports more than one listener, instance is added only once.- Parameters:
listener-The listener.
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removeLocationIssueListener
Removes a
LocationIssueListenerfrom the engine.- Parameters:
listener-The listener.
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setLastKnownLocationPersistent
Enables or disables saving of last known location so that it persists between application sessions. Defaults to enabled.
- Parameters:
persistent-Set to
trueto enable last known location to be saved persistently, orfalseto disable it.- Returns:
LocationEngineStatus.OKif call succeeds.LocationEngineStatus.NOT_SUPPORTEDon platforms which do not support controlling of last known location saving.
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enableVehicleSensors
void enableVehicleSensors(@NonNull androidx.car.app.hardware.CarHardwareManager manager) This feature enables the utilization of the vehicle's GNSS and movement sensor information. It is recommended to always enable this feature by default when the application supports Android Auto. This allows the phone's positioning sensor information to be augmented with the vehicle's sensor data, resulting in the best possible positioning estimates. However, given the varying quality of car sensor implementations, it is also advisable to provide application users with the option to disable the usage of vehicle sensor information - this would be helpful in case the vehicle reports information that is clearly misleading or contradictory. Furthermore, users should be able to re-enable this feature if the vehicle's capability improves.
- Parameters:
manager-Android Auto car hardware manager.
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disableVehicleSensors
void disableVehicleSensors()Disables access to vehicle's sensor information.
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getLastKnownLocation
Gets the last known location obtained by the
LocationEngine. It is persisted throughout the app's lifecycle.This property can be obtained without starting the
LocationEngine. However, the initial value might benullif no location has ever been obtained by theLocationEngine. The time attribute of theLocationobject indicates when the last location was obtained. Note: In order to receive continuous location updates, add aLocationListener.- Returns:
The last known location obtained by the
LocationEngine. It is persisted throughout the app's lifecycle.
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isStarted
boolean isStarted()Checks if the engine is in started state.
- Returns:
Checks if the engine is in started state.
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