Blackberry JAVA DEVELOPMENT ENVIRONMENT - - GPS AND MAPS - DEVELOPMENT GUIDE Manuale Utente Scaricare il pdf (Pagina 13)

Class Description

BlackBerryLocationProvider The BlackBerryLocationProvider class extends the

LocationProvider class and permits you to perform the following

actions:

• process a GPS location request from a BlackBerryCriteria

object

• pause and resume a location listener

• retrieve the GPS provider type (for example, an internal GPS receiver

or a Bluetooth® enabled GPS receiver)

For more information about the BlackBerry extension to JSR 179, see the BlackBerry Java Application Location-Based Services

Development Guide and the API reference for the BlackBerry® Java® Development Environment.

Landmark information retrieval using geocoding and reverse geocoding

You can retrieve landmark information by invoking the Locator.geocode() and Locator.reverseGeocode() methods

in the net.rim.device.api.lbs package. For example, you can use geocoding to find landmark information for a known

landmark by using a street address, city, or postal code. You can use reverse geocoding to find an approximate street address by

using the latitudinal and longitudinal coordinates.

For more information about geocoding and reverse geocoding, see the BlackBerry Java Application Location-Based Services

Development Guide and the API reference for the BlackBerry® Java® Development Environment.

Location picker dialog boxes

You can enable users to choose a location from a list that you define, by using the LocationPicker class that is provided in

the net.rim.device.api.lbs.picker package to create a location picker dialog box. For example, you can enable users

to choose their current GPS location or a previous location.

To download a sample application that demonstrates how to use location pickers, visit www.blackberry.com/go/

locationpickersample. For more information about location pickers, see the API reference for the BlackBerry® Java® Development

Environment.

Feature and Technical Overview

Location-based services

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Blackberry JAVA DEVELOPMENT ENVIRONMENT - - GPS AND MAPS - DEVELOPMENT GUIDE Manuale Utente Pagina 13