Android :: GetLastKnownLocation Out-of-date - How To Force Location Refresh
Jan 13, 2010
I'm using
CODE:......
To retrieve the current location at the start-up of my application.
As the Android documentation states, this location can be "out-of-date", since the method returns the location when the GPS was used the last time.
How can I actively request the current location from the GPS? I thought about using LocationListener, however that might be a bit of an overkill, since I only need the location once (at the start of my app).
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Oct 17, 2009
I can't display my map on android emulator. i have, locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); location = locationManager.getLastKnownLocation("gps"); After those lines,the Log shows null for location instead of the object location
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Jun 7, 2010
I'm using eclipse for Android development, and the editor always seems to take a while to actually update and recognize if I change an ID in a layout, then try to use it in a class with R.id.someId. Is there a way to force a refresh?
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Feb 28, 2010
I altered some of the tags (genres) in my mp3 coll, but I keep seeing the old ( no longer present) tags, how do I convince the music player to rescan my SD?
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Oct 2, 2010
I have an app with Admob ads on it but I find that when I use it the ad almost never refreshes because I don't change activities, instead I just update a text view when buttons are pressed. I have tried searching this on Google but keep comming up short.
I would like to tell the app to refresh the add occasionally, such as after two button clicks or something like that. Does anyone know how to do this and potentially have some sample code for it?
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Apr 29, 2010
I'm want date and lat/long to be automatically overlaid when I take a pic. Anyone heard of such an app?
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Nov 23, 2010
As I understand it, I have three location providers to choose from: GPS, Network and Passive.
I would like to obtain my location by detecting the Wi-Fi network I'm connected to, I believe both Cell Triangulation and Wi-Fi location determination is covered under the Network provider.
However, despite being connected to a Wi-Fi access point, my program always seems to use cell triangulation rather than Wi-Fi to determine my location (assumed based on the huge inaccuracy of the returned coordinates).
It doesn't look like there's any way to force the use of Wi-Fi only? How does Android decide when to use Wi-Fi over cell triangulation?
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May 3, 2010
After implementing some Android Apps, including several Map activities, I try to refresh the activity when the GPS listener's onLocationChanged() mehtod is called. I have no idea how to tell the map activity to refresh on its own and display the new coords. the coords to store will have to be in global values, so that the location listener will have access to it. In my sample GPS-class (see code below) I just changed the text of a text view....but how to do that in map view?
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Dec 25, 2009
ProgressDialog during location tasks either won't show or force closes - I have tried everything!
I now have it in a Handler with a full 1 second delay (one method another post suggested) but it doesn't show. I simply am stuck. Threads are usually force closing when I use those methods.
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Dec 2, 2009
I have read all the posts about this topic and I understand the arguments being made. However, I would like to know how Google Maps can return my *current* location yet while driving the same stretch of road, the Android API often (not always) gives me a last known location that was miles back. I need to be able to rely on the API to provide me with a *current location* and I have tried all the tricks being proposed here and elsewhere. Is there lower level code someplace that could ping the phone's radio for a "fresh fix?"
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Nov 12, 2010
In one application, when an activity start I use the getLastKnownLocation to get the last know position, using something like: Location position=mlocManager.getLastKnownLocation(mlocManager.getBestProvider(new Criteria(), true)); (in the onCreate)
After this, my application register a listener in the onResume() (and removes it in the onPause()), something like:........................
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Dec 16, 2009
I am facing with problem related to the Location API.
I tried the following code:
CODE:...................
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May 21, 2009
I'm having no luck getting getLastKnownLocation to return a non-null value in the Android emulator running in Eclipse. The following call always returns null:
locationManager.getLastKnownLocation(bestProvider);
(bestprovider is "gps")
In the intent's onCreate method I spawn a thread that calls requestFirstUpdate(). The onLocationChanged method fires so I presume the location was updated (I use the location section of the DDMS to push out a location first)..................
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Oct 22, 2009
So I'm trying to sample the gps coordinates just once in an application. I don't want to create a LocationListener object to constantly get gps updates. I want to wait until receiving the coordinates, and then proceed on to another task.
Here is a code snippet
CODE:.................
The loc variable is always null in the emulator. I tried using the command "geo fix latitude longitude" to set it, and also I tried using the DDMS way of setting it. Neither method had any effect on the code. Also the snippet isn't causing any exceptions.
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Nov 17, 2010
I have referred the article (at http://www.developer.com/article.php/3850276 ) for implementing the native calendar control, but i would like to display calendar also on the screen and also User can able to select date, and after selecting date user can also be able to event on that selected date.
So is there any way to display calendar (month view) in Android ?
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Sep 10, 2010
Do the Android users have the chance to reset the NetworkProvider, so that the location will be null?
I came up with the idea, that its only possible to have that location null, after starting the device the very first time. But also than google will check the location right away for my opinion.
Sure, I'm implementing a default location for this rare case. I just want to know how seldom this case is.
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May 2, 2010
I tried using both getLastKnownLocation and requestLocationUpdates to get GPS coordinates from emulator.
CODE:......
After that, i tried:
CODE:............
-or-
CODE:.............
-or-
CODE:........
I get the same error for all three:
CODE:.............
I have set the GPS coordinates in DDMS Location Controls, also set coordinates using telnet and geo fix.
My manifest file has all permissions, dont know why im getting errors
CODE:.......................
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Feb 1, 2010
I used to be able to use the GPS inside DDMS, now it doesn't work... Using English/Eclipse/Vista. Everything updated in eclipse->help-
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Jun 29, 2010
I am trying to convert string to date, and then I ma saving this date in a file , which saves in the following format:Mon Jun 21 16:31:24 Asia/Karachi 2010.and then when later I read this date from file as a String, I again want to save it to a Date,
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Oct 26, 2010
I'm developing a mapping app using Eclipse 3.5.I'm setting the minimum update period with the LocationManager's requestLocationUpdates method, via a configuration activity. When I set the property I see in Logcat that the system process sets the value OK.When I actually send a new location from the DDMS emulator control and the location changes on the map view, I see that the system process then sets the minimum time to zero.Below is a capture of the system's log messages. You can see that I'm setting the period to 32 seconds, then 16, then, after I've sent a simulated location change the system sets it to zero.The map responds to location changes to location changes instantly even if they are sent only a couple of seconds apart.
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Sep 17, 2010
In my application I have to fetch the current location. First it correctly fetches the location. But we are moving from the current location to some other location. It shows the previous address. It is not updating the location. My code is: locManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); locListener = new MyLocationListener();locManager.requestLocationUpdates(LocationManager .GPS_PROVIDER ,0,0,locListener); location = locManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);if(location != null){latitude = location.getLatitude();longitude = location.getLongitude();} Please find the mistake and when i launch first time it is not working on second time itself it is working so check this thing also.
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Jan 27, 2010
I have an application which uses the network as the location provider (rather than GPS eg.), however I can't seem to figure out how to send the emulator test coordinates. In DDMS I would usually send coordinates in the Emulator Control tab.Is there a place to simulate coordinates derived from the cell phone network provider?
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Mar 4, 2010
I want to override the method enableMyLocation() in MyLocationOverlay class, in order to implement my own positioning algorithm to get latitude/longitude, and then plot them onto a MapView. I figured out how to do that, but now I'm stuck because I dont know what Canvas to pass when I call the method drawMyLocation().
Here is the MyLocationOverlay class
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Jun 25, 2009
The way we are retrieving locations from our Android phones is to 1st get a Coarse Location followed by a Fine Location. This is for the case where the user may be inside a building initially and unable to track satellites. After we get our coarse location we transition to a fine location to track satellites. This method has been working fine for several months. We recently upgraded to 1.5 and our mapping application, to my recollection continued to work.For the past couple of days we have not been able to get a coarse location and we are receiving a status message in the onStatusChange callback of.We have re- installed previous versions our code that used 1.1 and we are receiving the same status message of .TEMPORARILY_UNAVAILABLE. Other than the obvious description of the constant, we can find no meaningful information.
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Mar 15, 2013
Recently all my android devices think they are in Spain when I am at home in Toronto.
I think this was caused when I ran a location spoofing program on only one of my devices, one of the locations I set it to was Spain (among others).
I've tried clearing the data for the Network Location apps, changing the SSID on my router with no luck.
The only way it shows the correct location is when I go outside and run Google maps long enough to get a GPS fix. But when I go back inside I am back in Spain!
The devices this is affectingGalaxy Nexus with my google account
Nexus 7 with my google account
Galaxy S3 with my google account
Galaxy S2 without my google account
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Apr 2, 2010
Is there any way to specify the time intervals that the Location Manager broadcasts the current location?
I am using a method called startListening:
CODE:.....................
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Aug 12, 2010
I've found bits and pieces of this answer scattered through other posts, but I wanted to record it here for others.How can I simply request the user's GPS and/or Network location and, if they haven't enabled the service, prompt them to do so?
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Nov 14, 2010
How could I fix the location which appears on the clock on the home screen and serves as weather forecast location? I am not living near a big city listed on the weather location list and when at home, the current location usually is indicated some dozen miles away from my home. This could be a cosmetic problem, but in the Alps (where I am living) weather a short distance away can be quite different from where you are.
Besides that, it would be nice to know the weather at home while beeing abroad.
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Jul 2, 2010
i've had my phone about 3 weeks now. up until last week, the htc weather widget would update to my current location. when i was home, it would show the town i live in. i also had the google internet option to use my location and this would also work perfectly until last sunday.now, the weather location was stuck on miami no matter where i went (as far north as west palm beach) and the internet shows up 'location unavailable'. i have found out that the gps is picking up where i am in goggle maps but it seems that the cell towers are not as far as weather and internet location are concerned. i have tried all of the obvious settings.i did a factory reset and now my weather says ft lauderdale which is closer to me but still not my town. it does not update (manually either) as i move. the internet location still says location unavailable although for a fleeting minute after the factory reset, it DID locate me....then it was gone so i called verizon, they didn't have a clue. then i took it to the store and it turns out EVERY phone the tech tried in the store had the same problem, including his. he told me it was a google problem and there was nothing he could do about it. i felt if i tried explaining how that would make it a verizon problem as well, it would be a losing battle
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Jun 7, 2010
I am having problems with the quick search feature. I did a random search for Mcdonalds and a map pulls up that is no where around me. I clicked update location but it says my location is unavailable. I have GPS enabled and my navigation app works just fine.
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