Android :: 10 Nearest Locations From The Current Location
Oct 11, 2010
Im doing app in which, uses sqlite db file to get data. table in db having shop name, address,city, latitude, longitude etc columns.
Im able to get cureent location latitude and longitude and also able to calculate the distance between current location and the location of a shop(in db) using longitude and latitude values.
Here my issue:
I need to get/display 10 shopnames(from db) which are nearest(distance) to the current location.
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Sep 12, 2010
I don't know if I'm wierd, but I haven't found any topic about the subject. The thing is, I have data with lat and lng stored in my SQLite database, and I want to get the nearest locations to the parameters I put in (ex. my current location - lat, lng).I know that this is possible in MySql, and I've done quite some research that SQLite needs a custom external function for the Haversine formula (calculating distance on a sphere), but I haven't found nothing yet, that is written in Java and is functioning.Also, if I want to add custom functions, I need the org.sqlite .jar (for org.sqlite.Function) and that adds unnecessary size to the app.The other side of this is - i need the Order by function from sql, because displaying the distance alone isn't that much of a problem - I already did it in my custom SimpleCursorAdapter, but I can't sort the data, because i don't have the distance column in my DB. That would mean updating the DB everytime the location changes and that's a waste of battery and performance. So if someone has any idea on sorting the cursor with a column that's not in the database, I'd be grateful too!I know there are tons of Android apps out there that use this function, but can someone please explain the magic.
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Apr 8, 2014
I have a Service that I am running in the background every minute. It's an IntentService and I start it like this:
Code:
Intent i = new Intent(context, GPSTracker.class);
PendingIntent pi = PendingIntent.getService(context, 0, i, 0);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
[code]...
That works, my Service is being run every minute (give or take a couple seconds for some reason) whether the app is up, closed, the phone is sleeping, whatever. how I should be getting the current location from this Service. I'm attempting to use LocationListener and a mix of getLastKnownLocation and hoping onLocationChanged will be called.
I think my problem is, onLocationChanged is barely getting called. Everytime the service runs and I do getLastKnownLocation I send a message to my database to check, I send a different message everytime onLocationChanged is called. I went to the store and back and getLastKnownLocation was called a few times, but onLocationChanged was only called once and it was incorrect. getLastKnownLocation always seems to be incorrect to.
Code:
protected void onHandleIntent(Intent intent) {
Log.i(TAG, "In onHandleIntent!");
Location currentLocation = getLocation(this);
if(currentLocation == null) {
saveLocation(-8.0, -8.0, "nothing", "nothing", "nothing");
[code]...
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Aug 2, 2013
i am developing an android based application "Route Tracker For Special Person".
well i am working with Google map api v2 and till now i have include map in my app and mark some places and further work i need to know this... During traveling When user reach at specific location let say user reach at location A, i have to call an event. e.g My app should find current locations continuously and automatically and match with locations that i marked ( how can it be done) and when it matched, event should be called.
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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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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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Jun 1, 2010
I'm trying to set up Dropbox on my phone in order to automate some actions, but I'm having trouble with one step. Primarily, I'd like for Dropbox to be main download location for files from Dolphin, Steel, and Browser. I can't find an easy way to make this happen, and it would be awesome if I could get it to work out.
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Oct 13, 2010
Am trying to develop an app that show current location. but i am having one prob. my application is showing location on location change occur.* but how to show location first time. * i want to take location manually..not by onlocationchange Method in location manager.
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Feb 23, 2010
I'm done creating an android program that adds a marker to a location. But I need to show CURRENT MY LOCATION in the MAP. I know this is done thru location based services but I don't know how to incorporate it into my program.
Here is my onCreate command:
CODE:.......
I have an onTouchEvent that places the marker. So no problem there, the problem is I need to display my location at the start of the program. It should show a mark that says, "You are here" or something like that in the map.
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Jul 26, 2010
How do I get the current location of the phone? I'm not talking about registering for location updates on the location manager and waiting for it to update upon change. I'm talking about get the current position.
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Jan 19, 2010
I need the current long and lat. getLastKnownLocation will not do the job as the info may be old. give me some code examples on how to turn on GPS and get the long and lat?
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Oct 28, 2010
I am trying to get my current location on my xperia X10i phone. There is no error in application code but i am not getting the location. I have tried to use built in navigation. It works fine but i have to turn on GPS satellite receiver as well wifi network.
Here is my application code.
CODE:..................
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Apr 23, 2010
I'm trying to get my location using it like this:
CODE:.........
But the myCurLocation is always == NULL
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May 29, 2009
I know this has been discussed over and over now but I just got it workign and it works perfectly on the emulator when I mock the location with long and lat however, I am still getting NULL in the location when I run the code on my phone.
here's the main code...
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Jul 15, 2010
Had my Desire now for a couple of months all going well apart from the weather app / widget all was fine but now it don't come up with current location just says united kingdom been trying to sort this for days, if I go into the application it see's my city but it defaults to uk any suggestions to sort this?
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May 1, 2010
I want to dispaly the current location in my application not in map. I want the current palce using current lattitude and longitude .
For Ex some 'x' person i want to know his location.but i want to know his location using his current lattitude and longitude.
When i use the below code it`Context context;
CODE:..........
The "addr" does not getting any value.why it is happened here my Activity is extended by MapActivity and also tell me without extending activity (simply in class) how do you find the current location using current lattitude and longitude ?
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Oct 5, 2010
How i can get the latitude and longitude of the current location, from android?
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Jun 29, 2010
The LocationManager API in android seems like it's a bit of a pain to use for an application that only needs an occasional and rough approximation of the user's location.The app I'm working on isn't really a location app per se, but it does need to get the user's location in order to display a list of nearby businesses. It doesn't need to worry about if the user is moving around or anything like that.Show the user a list of nearby locations.Preload the user's location so that by the time I need it in Activity X, it will be available. Don't particularly care about accuracy or frequency of update. Just grabbing one location is sufficient as long as it's not way off. Maybe if I want to be fancy I'll update the location once every few mins or so, but it's not a huge priority.
Work for any device as long as it has either a GPS or a Network Location provider.
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Sep 23, 2010
Please Help me for creating an application for getting the current location of the android phone.
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Nov 17, 2010
I have an activity that needs to display an alert to user when location is updated,
but i need first to get current location (update last known location) and then start a location update listener to display alert in this activity.
Basically what i need is to display an alert if location changed from time activity was created.
If i use getLastKnownLocation when activity is created, it might be outdated, then the requestLocationUpdate listener is called a few seconds from activity creation time.
How can i do this?
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Oct 14, 2010
I am new to android and not being able to display current location on map so can you provide me the code for displaying Location with manifest.xml and main.xml.
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Aug 21, 2009
I can easily find long/lat of my current location. Once I do that, I would like to find long/lat information for locations at distance X from y current location. Does anyone have suggestion(s) on how to do this using Android SDK methods?
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Feb 12, 2010
i have a problem.I want to find latitude and longitude of my current location in android application.Its not on location changed.I just need when i am stable with my phone after running it on emulator i always find "no location found".Why this is so?
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Sep 3, 2009
In my application I have a list of +400 GPS coordinates which I retrieve from addresses. The application should give me the top X nearest coordinates based on my current location.
This application is possible (I think) with the distanceBetween function. But (I think) the application is really inefficient when i iterate through the list of 400 coordinates and check the distance within a certain time interval. Another option is (I think) the proximityAlert function? All coordinates are loaded in this function and when my current location comes in the radius of a coordinate an alert is given. But the downside of this solution (I think) is the high memory usage which implies a short battery life of the Android phone?
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Nov 10, 2010
I would like to make my map zoom into my current location.
This current location is defined currently by sending lat and long to the emulator.
How would i go about doing this?
My current mapactivity.java
Code...
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Dec 15, 2009
I realize this isn't exactly a programming question. However I seem unable to discover this information elsewhere, so thanks if anyone can answer this. I'm on a Samsung Moment running Android 1.5.
Is there an official support forum for this type of question, or a preferred forum along the lines of ubuntuforums.org?
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Aug 8, 2010
I moved out of state for college & work, and whenever I am making the 8 hour drive home people are constantly bugging me about how far I am and when I'll be arriving. I don't really like texting or talking while I'm driving, so I'm looking for an app to help me out.
Is there an application that could post my current location on google maps whenever I have the app running?
Bonus points if it could be integrated into a navigation app somehow to show my trip route and basic information (e.g. how long I've been driving and estimated time of arrival).
You guys know of anything like this? Basically I want to be able to send a url to my friends or family to monitor my location.
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Oct 28, 2010
I am using SonyEricsson X10i phone. I have developend an application that just shows the current location of a user. Now the problem is When i turn on my application it just keep searching. It is not showing anything. Even if i try to use built in navigation system it does not work. I have turned on GPS receiver. My firmware version is 1.6 and kernel version is 2.6. I am not sure but i came to know from some resource that 1.6 firmware does not support GPS. Let me know if someone knows the solution.
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Aug 17, 2010
im trying to take latitude and longitude value of current location.Iam moving to point A to point B.After reaching point B i start application more than 3times i got 3 diffrent lat and lang.After 3 rd time its giving the same lat and lang.
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Sep 13, 2010
I am new android development. My new requirement is location details. I need to find, device current location in the form of latitude and longitude.
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