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Editorial Team
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Asked: 2026-05-14T16:53:01+00:00

is it possible, that android cleares the last known location after a restart? Yesterday

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is it possible, that android cleares the last known location after a restart?
Yesterday my code worked very fine, but today after rebooting my phone (AND emulator) it seems that the .getLastKnownLocation (see below) returns null, which leads to a nullPointerException…
Can you confirm that?
How can I avoid this problem? I’m desperately searching for an answer

lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

…

Location locUser = lm
    .getLastKnownLocation(LocationManager.GPS_PROVIDER);
posUser = new GeoPoint((int) (locUser.getLatitude() * 1E6),
(int) (locUser.getLongitude() * 1E6));

Would be great if someone coult give me a hint or point out my mistake.

Nice greetings, Poeschlorn

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1 Answer

  1. Editorial Team

    The call to getLastKnownLocation() doesn’t block – which means it will return null if no position is currently available, which is very likely after a device restart. I would be surprised if Android caches the current location when a user switches a device off since it is likely that the device will move before it is switched back on again.

    You’ll need to pass a LocationListener to the requestLocationUpdates() method instead, which will give you asynchronous updates of your location.

    Have a look at this question for an example of using a LocationListener.

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