Alright, my first post! I have been reading the forums and working on Java/BB development since last November. Thanks for all the information I have found so far.
Now, to my question..I have been spinning my wheels on this for a long time. Any help would really make my boss happy!
Device Info:
Blackberry Bold 9000 smartphone (3G, WI-FI)
v4.6.0.167 (Platform 4.0.0.157)
Not Enterprise Activated
Mobile Network:
AT&T
-70dBm
The app I have written requires the use of 'Current Location' features. We have found Autonomous Satellite connections are really lousy indoors (of course they are lousy, would you put your DirecTV satellite receiver in your house? no!). It doesn't work at all especially deep inside offices or buildings. Very, very rarely do we get lat/lng coordinates from inside a building using autonomous satellite criteria.
So, then we started researching Cell Site location providers. There is a great section in the developer guide titled "Get location information from cell site towers."
When I use the Criteria specified in that section, my LocationProvider always returns null on the device See code below:
Get Cell Site LocationProvider :
public static LocationProvider getCellSiteProvider() throws Throwable {
Criteria criteria = new Criteria();
criteria.setHorizontalAccuracy(Criteria.NO_REQUIREMENT);
criteria.setVerticalAccuracy(Criteria.NO_REQUIREMENT);
criteria.setCostAllowed(true);
criteria.setPreferredPowerConsumption(Criteria.POWER_USAGE_LOW);
criteria.setAddressInfoRequired(false);
criteria.setAltitudeRequired(false);
criteria.setSpeedAndCourseRequired(false);
LocationProvider lp = LocationProvider.getInstance(criteria);
return lp;
}
The LocationProvider calling code:
LocationProvider provider = null;
Location location = null;
try {
EventLogger.logEvent("get cell site provider", EventLogger.ERROR);
provider = GpsUtils.getCellSiteProvider(); // method above
if (provider != null) {
EventLogger.logEvent("get loc from prov", EventLogger.ERROR);
location = provider.getLocation(20);
}
} catch (Throwable t) {
t.printStackTrace();
}
When I test this on the device, the LocationProvider is always null. I check the Event Log debug statements, and it never prints the 2nd debug statement.
When I use autonomous, assisted, or null criteria, it works great, but only outdoors. Those criteria never work indoors. We are hoping cell site criteria would be the answer to indoor location problems.
