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POiphone location method startMonitoringSignificantChanges fails to work
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copied!<p><br> i am developing an application for iphone using iOS 4.2 SDK.<br> My application need to popup an alert when a user arrives a specific location (in 400m radius). Note that I need to get this alert even if the app is in the <strong>background</strong>. <br>When I use the locationManager with <strong>startUpdatingLocation</strong> mode, i get the alert when the app is in the foreground, but not when it is in the background.<br> When I try to run with locationManager with <strong>startMonitoringSignificantChanges</strong> mode, i don't get any position changes in background and even not in foreground (i.e. didUpdateLocation method is never called. only once in the application start up)<br> some facts:<br> 1. I updated info.plist with UIBackgroundMode with 'location' as first item in array.<br> 2. I updated info.plist UIDeviceCapabilities with gps and location-services (though it doesn't really matters)<br> 3. all said above refers to running this app on the 3GS iphone device.<br> 4. I tried this app on sdk 4.0 and 4.1 and got the same problem. <br> 5. The device supports startMonitoringSignificantChanges use (method of locationManager confirms it)<br> 6. When I check the app on the device i move in range of ~150 meters meters. Is the startMonitoringSignificantChanges will call didUpdateLocation method with this kind of movement?<br> 7. All settings on the devices are turned to on mode (roaming, 3G, wifi,...) <br><br> Am i missing something? any ideas?<br> Thanks,</p>

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