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Catching possible exceptions when getting actual location

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git-svn-id: https://osmand.googlecode.com/svn/trunk@856 e29c36b1-1cfa-d876-8d93-3434fc2bb7b8
This commit is contained in:
pavol.zibrita 2010-12-26 09:02:12 +00:00
parent 0b064d51db
commit b788966c84
1 changed files with 32 additions and 24 deletions
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56
OsmAnd/src/net/osmand/activities/DayNightHelper.java
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@ -21,26 +21,27 @@ import android.location.Location;
import android.location.LocationManager;
/**
* Class to help determine if we want to render day or night map
* - it uses the DayNightMode enumeration for its behavior
* - it uses the {@link RendererRegistry} to check if the night part is present
* - it uses the LightSensor and needs calls from MapActivity on onPause and onResume to register/unregister
* the sensor listener
* - it uses the {@link SunriseSunset} and {@link LocationManager} to find out about sunset/sunrise and use it
* Class to help determine if we want to render day or night map - it uses the
* DayNightMode enumeration for its behavior - it uses the
* {@link RendererRegistry} to check if the night part is present - it uses the
* LightSensor and needs calls from MapActivity on onPause and onResume to
* register/unregister the sensor listener - it uses the {@link SunriseSunset}
* and {@link LocationManager} to find out about sunset/sunrise and use it
*
* Note: the usage of SunriseSunset is not optimized in any way, it is recalculated on each demand. If this
* way it would be resource consuming, some recalculation threshold could be specified to recalculate the sun-rise/set
* only sometimes.
* Note2: the light sensor threshold is hard coded to {@link SensorManager#LIGHT_CLOUDY} and could be made customizable
* Note: the usage of SunriseSunset is not optimized in any way, it is
* recalculated on each demand. If this way it would be resource consuming, some
* recalculation threshold could be specified to recalculate the sun-rise/set
* only sometimes. Note2: the light sensor threshold is hard coded to
* {@link SensorManager#LIGHT_CLOUDY} and could be made customizable
*
* @author pavol.zibrita
*/
public class DayNightHelper implements SensorEventListener {
private static final Log log = LogUtil.getLog(DayNightHelper.class);
String currentRenderName = "";
boolean daynightcheck = false;
boolean sensorcheck = false;
private String currentRenderName = "";
private boolean daynightcheck = false;
private boolean sensorcheck = false;
private final OsmandApplication osmandApplication;
public DayNightHelper(OsmandApplication osmandApplication) {
@ -87,16 +88,23 @@ public class DayNightHelper implements SensorEventListener {
// We are in auto mode!
if (daynightcheck) {
LocationManager locationProvider = (LocationManager) osmandApplication
.getSystemService(Context.LOCATION_SERVICE); // Or use
// LocationManager.GPS_PROVIDER
Location lastKnownLocation = locationProvider
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
SunriseSunset daynightSwitch = new SunriseSunset(
lastKnownLocation.getLatitude(),
lastKnownLocation.getLongitude(), new Date(), TimeZone
.getDefault().getRawOffset());
day = daynightSwitch.isDaytime();
log.debug("Sunrise/sunset setting to day: " + day);
.getSystemService(Context.LOCATION_SERVICE);
try {
Location lastKnownLocation = locationProvider
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
SunriseSunset daynightSwitch = new SunriseSunset(
lastKnownLocation.getLatitude(),
lastKnownLocation.getLongitude(), new Date(), TimeZone
.getDefault().getRawOffset());
day = daynightSwitch.isDaytime();
log.debug("Sunrise/sunset setting to day: " + day);
} catch (IllegalArgumentException e) {
log.warn("Network location provider not available"); //$NON-NLS-1$
daynightcheck = false;
} catch (SecurityException e) {
log.warn("Missing permitions to get actual location!");
daynightcheck = false;
}
}
if (sensorcheck) {
day = lux > SensorManager.LIGHT_CLOUDY;