Blackberry JAVA DEVELOPMENT ENVIRONMENT - - GPS AND MAPS - DEVELOPMENT GUIDE Instrukcja Użytkownika Pobierz pdf (Strona 10)

GPS and BlackBerry Maps Development Guide

> To specify the mode for getting GPS location information, create an instance of the

javax.microedition.location.Criteria class, invoke the appropriate set methods, and then pass the instance to

LocationProvider.getInstance().

Get location information from cell site towers

1. Create an instance of a Criteria object.

Criteria criteria = new Criteria();

2. Perform the following tasks:

3. Invoke LocationProvider.getInstance(), storing the returned object in a LocationProvider object.

LocationProvider provider = LocationProvider.getInstance(criteria);

Get location information from GPS satellites using PDE

1. Create an instance of a Criteria object.

Criteria criteria = new Criteria();

2. Perform the following tasks:

3. Invoke LocationProvider.getInstance(), storing the returned object in a LocationProvider object.

LocationProvider provider = LocationProvider.getInstance(criteria);

Task Steps

Specify longitudinal accuracy is not

required.

>Invoke criteria.setHorizontalAccuracy(NO_REQUIREMENT).

criteria.setHorizontalAccuracy(NO_REQUIREMENT);

Specify latitudinal accuracy is not

required.

>Invoke criteria.setVerticalAccuracy(NO_REQUIREMENT).

criteria.setVerticalAccuracy(NO_REQUIREMENT);

Specify that this mode can incur

cost.

>Invoke criteria.setCostAllowed(true).

criteria.setCostAllowed(true);

Specify power consumption is low. > Invoke criteria.setPreferredPowerConsumption(POWER_USAGE_LOW).

setPreferredPowerConsumption(POWER_USAGE_LOW);

Task Steps

Specify longitudinal accuracy is not

required.

>Invoke criteria.setHorizontalAccuracy(NO_REQUIREMENT).

criteria.setHorizontalAccuracy(NO_REQUIREMENT);

Specify latitudinal accuracy is not

required.

>Invoke criteria.setVerticalAccuracy(NO_REQUIREMENT).

criteria.setVerticalAccuracy(NO_REQUIREMENT);

Specify that this mode can incur

cost.

>Invoke criteria.setCostAllowed(true).

criteria.setCostAllowed(true);

Specify power consumption is

medium or not required.

>Invoke criteria.setPreferredPowerConsumption(int level)using one of

POWER_USAGE_MEDIUM, or NO_REQUIREMENT as the parameter.

criteria.setPreferredPowerConsumption(POWER_USAGE_MEDIUM);

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