Friday, January 13, 2012

Get Current Location coordinates , City name

Sometime we need to get  GPS  coordinates in android. so today i am going to write step by step simple tutorial How can we get location coordinates using GPS in android mobile.

also through coordinate we can calculate current location more details like City Name.

Note: I have tested this app on My Android Mobile and its working fine.
But when you test this app, enable your gps settings in mobile, you need to change current location like 10-20 meter so you will get the coordinates, so need to move with the installed app mobile device.

What this app does?
  • Check gps is enable or disable.
  • Get gps coordinates.
  • Get the current city name.
okay! so let's try this small app

 -------------------------------------------
App Name: GetCurrentLocation
Package Name: com.rdc
Android SDK: Android SDK 2.3.3 / API 10
Default Activity Name: GetCurrentLocation
-------------------------------------------


GetCurrentLocation.java


package com.rdc;

import java.io.IOException;
import java.util.List;
import java.util.Locale;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.ContentResolver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.Toast;

public class GetCurrentLocation extends Activity 
implements OnClickListener {
 
 private LocationManager locationMangaer=null;
 private LocationListener locationListener=null; 
 
 private Button btnGetLocation = null;
 private EditText editLocation = null; 
 private ProgressBar pb =null;
 
 private static final String TAG = "Debug";
 private Boolean flag = false;

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  
  
  //if you want to lock screen for always Portrait mode  
  setRequestedOrientation(ActivityInfo
  .SCREEN_ORIENTATION_PORTRAIT);

  pb = (ProgressBar) findViewById(R.id.progressBar1);
  pb.setVisibility(View.INVISIBLE);
  
  editLocation = (EditText) findViewById(R.id.editTextLocation); 

  btnGetLocation = (Button) findViewById(R.id.btnLocation);
  btnGetLocation.setOnClickListener(this);
  
  locationMangaer = (LocationManager) 
  getSystemService(Context.LOCATION_SERVICE);

 }

 @Override
 public void onClick(View v) {
  flag = displayGpsStatus();
  if (flag) {
   
   Log.v(TAG, "onClick");  
   
   editLocation.setText("Please!! move your device to"+
   " see the changes in coordinates."+"\nWait..");
   
   pb.setVisibility(View.VISIBLE);
   locationListener = new MyLocationListener();

   locationMangaer.requestLocationUpdates(LocationManager
   .GPS_PROVIDER, 5000, 10,locationListener);
   
   } else {
   alertbox("Gps Status!!", "Your GPS is: OFF");
  }

 }

 /*----Method to Check GPS is enable or disable ----- */
 private Boolean displayGpsStatus() {
  ContentResolver contentResolver = getBaseContext()
  .getContentResolver();
  boolean gpsStatus = Settings.Secure
  .isLocationProviderEnabled(contentResolver, 
  LocationManager.GPS_PROVIDER);
  if (gpsStatus) {
   return true;

  } else {
   return false;
  }
 }

 /*----------Method to create an AlertBox ------------- */
 protected void alertbox(String title, String mymessage) {
  AlertDialog.Builder builder = new AlertDialog.Builder(this);
  builder.setMessage("Your Device's GPS is Disable")
  .setCancelable(false)
  .setTitle("** Gps Status **")
  .setPositiveButton("Gps On",
   new DialogInterface.OnClickListener() {
   public void onClick(DialogInterface dialog, int id) {
   // finish the current activity
   // AlertBoxAdvance.this.finish();
   Intent myIntent = new Intent(
   Settings.ACTION_SECURITY_SETTINGS);
   startActivity(myIntent);
      dialog.cancel();
   }
   })
   .setNegativeButton("Cancel",
   new DialogInterface.OnClickListener() {
   public void onClick(DialogInterface dialog, int id) {
    // cancel the dialog box
    dialog.cancel();
    }
   });
  AlertDialog alert = builder.create();
  alert.show();
 }
 
 /*----------Listener class to get coordinates ------------- */
 private class MyLocationListener implements LocationListener {
        @Override
        public void onLocationChanged(Location loc) {
          
            editLocation.setText("");
            pb.setVisibility(View.INVISIBLE);
            Toast.makeText(getBaseContext(),"Location changed : Lat: " +
   loc.getLatitude()+ " Lng: " + loc.getLongitude(),
   Toast.LENGTH_SHORT).show();
            String longitude = "Longitude: " +loc.getLongitude();  
      Log.v(TAG, longitude);
      String latitude = "Latitude: " +loc.getLatitude();
      Log.v(TAG, latitude);
          
    /*----------to get City-Name from coordinates ------------- */
      String cityName=null;              
      Geocoder gcd = new Geocoder(getBaseContext(), 
   Locale.getDefault());             
      List<Address>  addresses;  
      try {  
      addresses = gcd.getFromLocation(loc.getLatitude(), loc
   .getLongitude(), 1);  
      if (addresses.size() > 0)  
         System.out.println(addresses.get(0).getLocality());  
         cityName=addresses.get(0).getLocality();  
        } catch (IOException e) {            
        e.printStackTrace();  
      } 
          
      String s = longitude+"\n"+latitude +
   "\n\nMy Currrent City is: "+cityName;
           editLocation.setText(s);
        }

        @Override
        public void onProviderDisabled(String provider) {
            // TODO Auto-generated method stub         
        }

        @Override
        public void onProviderEnabled(String provider) {
            // TODO Auto-generated method stub         
        }

        @Override
        public void onStatusChanged(String provider, 
  int status, Bundle extras) {
            // TODO Auto-generated method stub         
        }
    }
}

main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:weightSum="1">
 <TextView
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="Get Current Location and City Name"
  android:layout_weight="0.20"
  android:gravity="center"
  android:textSize="20sp" />
 <EditText
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:layout_weight="0.33"
  android:id="@+id/editTextLocation"
  android:editable="false">
  <requestFocus></requestFocus>
 </EditText>
 <LinearLayout
  android:id="@+id/layButtonH"
  android:layout_height="wrap_content"
  android:layout_width="fill_parent"
  android:gravity="center"
  android:layout_weight="0.15">
  <Button
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="Get Location"
   android:id="@+id/btnLocation"></Button>
 </LinearLayout>
 <LinearLayout
  android:id="@+id/layloadingH"
  android:layout_height="wrap_content"
  android:layout_weight="0.20"
  android:layout_width="fill_parent"
  android:gravity="center">
  <ProgressBar
   android:layout_width="wrap_content"
   android:id="@+id/progressBar1"
   android:layout_height="wrap_content"></ProgressBar>
 </LinearLayout>
</LinearLayout>


AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest
 xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.rdc"
 android:versionCode="1"
 android:versionName="1.0">
 <uses-sdk android:minSdkVersion="10" />

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION">
</uses-permission>

 <application
  android:icon="@drawable/icon"
  android:label="@string/app_name">
  <activity
   android:name=".GetCurrentLocation"
   android:label="@string/app_name">
   <intent-filter>
   <action android:name="android.intent.action.MAIN" />
   <category android:name="android.intent.category.LAUNCHER" />
   </intent-filter>
  </activity>

 </application>
</manifest>

The output Screen will be like this..


You can download the complete source code zip file here : GetCurrentLocation

 cheers!!

I'd love to hear your thoughts!

90 comments:

  1. Replies
    1. ya updated the code and also added complete source code zip file. hope it will help :)

      Delete
  2. Replies
    1. How you test this code by using android emulator?

      Delete
  3. great work thanxs. try to implement map view too.

    ReplyDelete
    Replies
    1. your welcome rajkumar :), well.. last week i wrote Google Map tutorials. you can check http://rdcworld-android.blogspot.in/2012/07/google-map-tutorial-android-advance.html

      Delete
    2. how to test this code in the emulator??

      Delete
  4. Thanks alot fa ur tutorial...:) Great work...!Cheers...!!

    ReplyDelete
  5. hey am getting an error.

    The method onProviderEnabled(String) of type GetCurrentLocation.MyLocationListener must override a superclass method

    ReplyDelete
    Replies
    1. are you getting error in Listener class? then it happens some times because IDE doesn't load code properly, you should remove listener class code and write "private class MyLocationListener implements LocationListener " then click for implement UN-implemented methods then put the above code inside... let me know still if you have any trouble... or you may like to download complete zip code attached

      Delete
  6. Where will the latitude/longitude and the current city name be displayed in? Is it in TextView? & why I can't get the values when tested in the phone?

    Thank you.

    ReplyDelete
    Replies
    1. Yes! in "Edit Text" above "Get Location" button.. I was testing on mobile so couldn't manage to get Screen Shot, btw shortly I'll try to post one more image.

      Delete
  7. Thank you very much.. Your code worked well

    ReplyDelete
  8. Please tell me how to give the long and lat manually in eclipse. I tried using emulator control to do this thing. but not working. Please tell me when to pass the lat and long in the eclipse or a video link about it. Please I'm in a very need of it.

    ReplyDelete
  9. I tried to run it in eclipse but don't know when to give the long and lat manually. Please tell me when should I give the value for it. before or while running the code in the emulator

    ReplyDelete
  10. thankz for your code..............

    ReplyDelete
  11. How can i send this location co ordinates to my mysql database...

    ReplyDelete
    Replies
    1. You may need to make request to server, Please look on google for HttpRequest or similar post in android

      Delete
  12. Hey Rdc nice tutorial man,
    but i need to use gps in background like if user's location get changed, then he will get a notification, even when the app is not running or he is using some other activity.
    Help appreciated
    Thanks

    ReplyDelete
    Replies
    1. Sorry for late reply but For your need you should create background service and register Location manager with service so whenever you will get different location, you will get notification (toast)

      Delete
  13. great work really awesome. Thanks A Lot

    ReplyDelete
  14. Really wonderful work. Thanks a lot.....:)

    ReplyDelete
    Replies
    1. My pleasure dear!! it helps you :)

      Delete
  15. nice tutorial sir.. accidentally i opened this blog n felt very happy to see this. m also working on android platform.

    ReplyDelete
    Replies
    1. Thank you Avinash,, now-days I am trying to post more tutorials, Btw if you need any help just let me know dear :)

      Delete
  16. Good tutorial. I have question on this? You have used GPS provider always. What if I am under the roof. I am not able get the value. I would like to move to Network provider automatically and fetch the details. How do I do this?

    ReplyDelete
  17. Good tutorial. I have question on this? You have used GPS provider always. What if I am under the roof. I am not able get the value. I would like to move to Network provider automatically and fetch the details. How do I do this?

    ReplyDelete
    Replies
    1. Thank you Raam!! well I would say when you are under the roof, you can check whether provider is available or not and as per the result notification you can request for GPS data.

      Delete
  18. thanks and good tutorial.will u publish the tutorial of location based reminder??

    ReplyDelete
    Replies
    1. You'r welcome Ankita.. yes I am doing R & D on GPS reminder shortly I'll post here, now-days I am spending time on posting iPhone tutorials also, Greetings!! from RDC. for your valuable feedback.

      Delete
  19. Awesome! Thank you very much... works perfectly!

    ReplyDelete
  20. This code is great its running very well,bt i want to check my current location only ones.hw to fat ??

    ReplyDelete
  21. Thank you very much.. Your code worked well,i want chk my location only ones ,hw to do dat ??

    ReplyDelete
  22. Hi, do you know if this is working with Android SDK 2.2 / API 8? Thank you in advanced.

    ReplyDelete
    Replies
    1. yes It works fine with ndroid SDK 2.2 / API 8, I have tested on Android devices.

      Delete
  23. that works excellent.. thanks so much because also checked if the GPS is ON and GO to the configuration .. the only trouble I had, was that I had to change
    the line number 91 in GetCurrentLocation.java
    this:

    boolean gpsStatus = Settings.Secure.isLocationProviderEnabled(contentResolver,LocationManager.GPS_PROVIDER);

    for this one:

    boolean gpsSatus = android.provider.Settings.Secure.isLocationProviderEnabled(contRes, LocationManager.GPS_PROVIDER);

    ***
    and line number 114 in GetCurrentLocation.java

    Intent myIntent = new Intent(Settings.ACTION_SECURITY_SETTINGS);
    startActivity(myIntent);

    for this one:

    Intent myIntent = new Intent(android.provider.Settings.ACTION_SECURITY_SETTINGS);
    startActivity(myIntent);

    But both changes were because I'm programming under android 3.03 (API 15) I think.


    ****
    so I check the code inside protected void alertbox(String title, String mymessage)
    and I can't see where or when you use String title, String mymessage ?? or there are never used?. so THANKS a lot.

    ReplyDelete
    Replies
    1. Thank you a lot for your Valuable feedback.. FYI, I used result string at line no 160.

      Please! check the code

      String s = longitude+"\n"+latitude +
      "\n\nMy Currrent City is: "+cityName;
      editLocation.setText(s);

      Delete
    2. Yeah, that's right, I understood it... I refer to the method protected void alertbox(String title, String mymessage) at line 103.... that received the parameters title and mymessage , but these variables there never mention inside the method.. jeje but don't worry it's doesn't matter .. in fact the code works perfect.. so thanks again from Ecuador and forgive me for my english (it's not too good)

      Delete
    3. ¡gracias :) glad to know that it help you,, btw one day I'll come to Ecuador with My Guitar and will play some spicy and then I'll ask you "give me a treat".

      Delete
  24. helloo rd i am running this code in my simulator but was not able to get the location cordinates and city name. Should i have to send it manually from emulator control. please help...

    ReplyDelete
  25. Helloo Rd I am running this code in my eclipse simulator but I am not able to get the current location should I have to send it manually from emulator control.please help...

    ReplyDelete
    Replies
    1. Anish, Yeah! if you are testing this app in Emulator then you have to pass co-ordinates in Emulator Controller using GPX or KML file.

      Delete
  26. HI RDC,

    I am trying to run this code on android 4.2. After turn on GPS, when i press Get Location button a progress dialog is shown but happen nothing means i am not able to get desired result. Can you help out please?

    ReplyDelete
    Replies
    1. Vikash after install app and you click button to get location you need to move device to another location then only onChangeLocation method gets called and we will get new location information. Plz! let me know still you have problem.

      Delete
  27. w pogłowiu owiec a bydła nieоdmiennie

    oѕkarżanο ωilki a http://fajniejest.keed.pl/ złodziei.
    Sіr Roger słuchаł zdumiony. - Nie uwierzуcie, κobiety - wуskandował Αrnolԁ
    przyсіszonym głosem,

    rozglądając się powątpiewаjąсo na jako że.

    ReplyDelete
  28. Replies
    1. hehe.. Ameni Thank you for your kind worlds :)

      Delete
  29. working awsome dude.... thanks for the share (y)

    i use this to turn gps on/off programmatically

    private void turnGPSOn(){

    String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);

    if(!provider.contains("gps")) {

    final Intent intent = new Intent();
    intent.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
    intent.addCategory(Intent.CATEGORY_ALTERNATIVE);
    intent.setData(Uri.parse("3"));
    sendBroadcast(intent);
    }
    }

    private void turnGPSOff(){

    String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);

    if(provider.contains("gps")) {

    final Intent intent = new Intent();
    intent.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
    intent.addCategory(Intent.CATEGORY_ALTERNATIVE);
    intent.setData(Uri.parse("3"));
    sendBroadcast(intent);
    }
    }

    ReplyDelete
    Replies
    1. Arun, Great to here that!! :) keep rocking \m/

      Delete
  30. A great blog indeed......I want to update these gps points to a database...hope u can help

    ReplyDelete
  31. hey i tested this on my phone it gave me longitude and latitude bt dint give me current city??? what to do please help me bro :)

    ReplyDelete
    Replies
    1. Sunil, well i tested, it gives GPS coordinates and city name as well, but I would you say for getting city name we do request for Geocoder so sometime if we don't get response from geo then may be this happen

      [Reason: We can't get all address. No one promised every set of coordinates will return an address ]

      Delete
  32. I run it on my tablet. I can see coordinate but city name is null. how can i fix it?

    ReplyDelete
  33. Hello RDC, Thanks for your tutorial.But i want to know that can we get location and status manually,means without righting listener class.Hope you will help me.
    Actually i have created a timer.Which will run on every 10 seconds time interval. I want to get the location as well as status of in every 10 seconds time interval.
    I used listener but it didnt work as per my requirement.
    Hope you will help me.

    ReplyDelete
  34. Wow Awesome really great...... Im searching for this for a month.... now i got it...... Thanks Dude...... Thanks a lot.... :) :) :)

    ReplyDelete
  35. Wow awesome...... Its working good..... im searching for this code for a month....

    now i got it.....

    Thank You Dude..... Thank you so much.... Great work....

    i wanna follow your tutorial where can i find?.....

    ReplyDelete
    Replies
    1. Most welcome dear!! Really glad to know that my code was helpful for you :)

      If you want to follow my blog, you need to login with your gmail account and then there is option in right side bottom, also you can read this page for more help
      [ http://support.google.com/blogger/bin/answer.py?hl=en&answer=104226 ]

      Regards,
      RDC

      Delete
  36. Great job .... keep it up :)

    ReplyDelete
    Replies
    1. yeah sure,, A Grand welcome from INDIA .. :)

      Delete
  37. salut,svp sa marche pas sur mon émulateur?

    ReplyDelete
  38. hii...i need code to connect several android mobiles through their GPS to display their locations while calling...

    ReplyDelete
  39. wow nice ;)
    what if more details of the city, such as a district or village?

    ReplyDelete
  40. Can you also create a program to give altitude along with this?

    ReplyDelete
  41. Hi ur work r great :)
    How to Find Specific Nearby Locations in android

    ReplyDelete
  42. Good work.
    But i'm wondering if i can get the coordinates without moving.

    ReplyDelete
  43. Thanks for your Great Post,i tested it on Galaxy S4 and it works well,but when you click on GPS On button it shown security setting,but in S4 security and location setting are separate,so i chenged line 106 to :

    Intent myIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);

    And Solved

    ReplyDelete
  44. thank you very much
    it does works

    ReplyDelete
  45. hello, i want the app to detect the GPS location of the mobile and automatically turn off the app when the mobile is moved out from a particular area. suppose i have a vast land of 400 acres. i should be able to access the app only in this area. once i come out of my land the i should not be able to access the app.. how to do this? can i get a step by step tutorial for this?? plz help me...

    ReplyDelete
  46. Hi Great code.
    Is it possible for you to make the code in a background service??

    ReplyDelete
  47. Thank u Very much. The code is working but i need the exact location can u give any idea. plz any one can help. send mail plz

    ReplyDelete
  48. I want to modify this code, so that I can get the location every second and store it in a file. How can I go for it?

    ReplyDelete
  49. Hi, I'd like to use your code to add city name in my App.

    Instead of click button, I want to call GetCurrentLocation class directly when my main class opens.

    I did change class name from GetCurrentLocation to Localizacao.

    Added in my main class:

    Localizacao localiza = new Localizacao();
    MyLocationListener dadosGPS = localiza.new MyLocationListener();
    System.out.println(Localizacao.localizacaoGPS);

    What could be wrong? Could give me this BIG help? Thanx!!

    ReplyDelete
  50. hi i am new to android!! i cant find the current location its just loading and showing searching for gps in notification bar!! pls help out

    ReplyDelete
  51. Thank you very much for this tutorial. Can u tell me that how to get exact location with automatically turned on gps location provider and also i want that no any user can turned off their gps location provider manually..

    ReplyDelete
  52. i got latitude and longitude but my current city is being shown "my current city is null"
    plz help me.!

    ReplyDelete
  53. Thanks A lot ,, please, how can I get address instead of city ( district and street )

    ReplyDelete
  54. Hi RDC,

    Great Work.

    But i am facing one issue, i am not getting lat n log. Activity in showing with process. Even though i am moving my device also. i am using htc one s for testing.

    Please help me to resolve this issue

    ReplyDelete
  55. Thanks a lot. It worked. Great. Excellent. Keep posting.

    ReplyDelete
  56. I tried your code. It worked well. I wanna one more spec or feature. Now I can get latitude, longitude and city name. I wanna area and street name. Is it possible? Please reply.

    ReplyDelete
  57. i found a TYPO: "locationMangaer" instead of "locationManager"

    ReplyDelete