If you are developing any location based or map application, to get location automatically you can use this.
In this post i have explained about how to switch on and off the GPS from our app. And also have explained about how to stop the location listener update after fetching the location.
You can Find location using either GPS_PROVIDER or NETWORK_PROVIDER
1. In your AndroidManifest.xml file you have to add the below permissions.
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
above permissions are used to get location and addresses.
2. Your Complete manifest file will be look like below.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.getcurrentlocation"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.getcurrentlocation.MainActivity"
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>
3. Your Activity Class
package com.example.getcurrentlocation;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Settings;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity {
TextView textView2,textView3,textView1;
Button button1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView2=(TextView)findViewById(R.id.textView2);// text to show latitude
textView3=(TextView)findViewById(R.id.textView3);// text to show longitude
textView1=(TextView)findViewById(R.id.textView1);// text to show addresses
button1=(Button)findViewById(R.id.button1); // button
// click the below to get the current location and address.
button1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
turnGPSOn(); // method to turn on the GPS if its in off state.
getMyCurrentLocation();
}
});
}
/** Method to turn on GPS **/
public void turnGPSOn(){
try
{
String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
if(!provider.contains("gps")){ //if gps is disabled
final Intent poke = new Intent();
poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
poke.addCategory(Intent.CATEGORY_ALTERNATIVE); poke.setData(Uri.parse("3"));
sendBroadcast(poke);
}
}
catch (Exception e) {
}
}
// Method to turn off the GPS
public void turnGPSOff(){
String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
if(provider.contains("gps")){ //if gps is enabled
final Intent poke = new Intent();
poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
poke.addCategory(Intent.CATEGORY_ALTERNATIVE);
poke.setData(Uri.parse("3"));
sendBroadcast(poke);
}
}
// turning off the GPS if its in on state. to avoid the battery drain.
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
turnGPSOff();
}
/** Check the type of GPS Provider available at that instance and collect the location informations
@Output Latitude and Longitude
* */
void getMyCurrentLocation() {
LocationManager locManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
LocationListener locListener = new MyLocationListener();
try{gps_enabled=locManager.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){} try{network_enabled=locManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){}
//don't start listeners if no provider is enabled
//if(!gps_enabled && !network_enabled)
//return false;
if(gps_enabled){
locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locListener);
}
if(gps_enabled){
location=locManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
}
if(network_enabled && location==null){
locManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locListener);
}
if(network_enabled && location==null) {
location=locManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
if (location != null) {
MyLat = location.getLatitude();
MyLong = location.getLongitude();
} else {
Location loc= getLastKnownLocation(this);
if (loc != null) {
MyLat = loc.getLatitude();
MyLong = loc.getLongitude();
}
}
locManager.removeUpdates(locListener); // removes the periodic updates from location listener to avoid battery drainage. If you want to get location at the periodic intervals call this method using pending intent.
try
{
// Getting address from found locations.
Geocoder geocoder;
List<Address> addresses;
geocoder = new Geocoder(this, Locale.getDefault());
addresses = geocoder.getFromLocation(MyLat, MyLong, 1);
StateName= addresses.get(0).getAdminArea();
CityName = addresses.get(0).getLocality();
CountryName = addresses.get(0).getCountryName();
// you can get more details other than this . like country code, state code, etc.
System.out.println(" StateName " + StateName);
System.out.println(" CityName " + CityName);
System.out.println(" CountryName " + CountryName);
}
catch (Exception e)
{
e.printStackTrace();
}
textView2.setText(""+MyLat);
textView3.setText(""+MyLong);
textView1.setText(" StateName " + StateName +" CityName " + CityName +" CountryName " + CountryName);
}
// Location listener class. to get location.
public class MyLocationListener implements LocationListener {
public void onLocationChanged(Location location) {
if (location != null) {
}
} public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
}
private boolean gps_enabled=false;
private boolean network_enabled=false;
Location location;
Double MyLat, MyLong;
String CityName="";
String StateName="";
String CountryName="";
// below method to get the last remembered location. because we don't get locations all the times .At some instances we are unable to get the location from GPS. so at that moment it will show us the last stored location.
public static Location getLastKnownLocation(Context context)
{
Location location = null;
LocationManager locationmanager = (LocationManager)context.getSystemService("location");
List list = locationmanager.getAllProviders();
boolean i = false;
Iterator iterator = list.iterator();
do
{
//System.out.println("---------------------------------------------------------------------");
if(!iterator.hasNext())
break;
String s = (String)iterator.next();
//if(i != 0 && !locationmanager.isProviderEnabled(s))
if(i != false && !locationmanager.isProviderEnabled(s))
continue;
// System.out.println("provider ===> "+s);
Location location1 = locationmanager.getLastKnownLocation(s);
if(location1 == null)
continue;
if(location != null)
{
//System.out.println("location ===> "+location);
//System.out.println("location1 ===> "+location);
float f = location.getAccuracy();
float f1 = location1.getAccuracy();
if(f >= f1)
{
long l = location1.getTime();
long l1 = location.getTime();
if(l - l1 <= 600000L)
continue;
}
}
location = location1;
// System.out.println("location out ===> "+location);
//System.out.println("location1 out===> "+location);
i = locationmanager.isProviderEnabled(s);
// System.out.println("---------------------------------------------------------------------");
} while(true);
return location; }}
Source
You can download the source from this link
https://github.com/ItsRajesh4uguys/GetCurrentLocationAndAddress
In this post i have explained about how to switch on and off the GPS from our app. And also have explained about how to stop the location listener update after fetching the location.
You can Find location using either GPS_PROVIDER or NETWORK_PROVIDER
1. In your AndroidManifest.xml file you have to add the below permissions.
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
above permissions are used to get location and addresses.
2. Your Complete manifest file will be look like below.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.getcurrentlocation"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.getcurrentlocation.MainActivity"
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>
3. Your Activity Class
package com.example.getcurrentlocation;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Settings;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity {
TextView textView2,textView3,textView1;
Button button1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView2=(TextView)findViewById(R.id.textView2);// text to show latitude
textView3=(TextView)findViewById(R.id.textView3);// text to show longitude
textView1=(TextView)findViewById(R.id.textView1);// text to show addresses
button1=(Button)findViewById(R.id.button1); // button
// click the below to get the current location and address.
button1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
turnGPSOn(); // method to turn on the GPS if its in off state.
getMyCurrentLocation();
}
});
}
/** Method to turn on GPS **/
public void turnGPSOn(){
try
{
String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
if(!provider.contains("gps")){ //if gps is disabled
final Intent poke = new Intent();
poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
poke.addCategory(Intent.CATEGORY_ALTERNATIVE); poke.setData(Uri.parse("3"));
sendBroadcast(poke);
}
}
catch (Exception e) {
}
}
// Method to turn off the GPS
public void turnGPSOff(){
String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
if(provider.contains("gps")){ //if gps is enabled
final Intent poke = new Intent();
poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
poke.addCategory(Intent.CATEGORY_ALTERNATIVE);
poke.setData(Uri.parse("3"));
sendBroadcast(poke);
}
}
// turning off the GPS if its in on state. to avoid the battery drain.
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
turnGPSOff();
}
/** Check the type of GPS Provider available at that instance and collect the location informations
@Output Latitude and Longitude
* */
void getMyCurrentLocation() {
LocationManager locManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
LocationListener locListener = new MyLocationListener();
try{gps_enabled=locManager.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){} try{network_enabled=locManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){}
//don't start listeners if no provider is enabled
//if(!gps_enabled && !network_enabled)
//return false;
if(gps_enabled){
locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locListener);
}
if(gps_enabled){
location=locManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
}
if(network_enabled && location==null){
locManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locListener);
}
if(network_enabled && location==null) {
location=locManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
if (location != null) {
MyLat = location.getLatitude();
MyLong = location.getLongitude();
} else {
Location loc= getLastKnownLocation(this);
if (loc != null) {
MyLat = loc.getLatitude();
MyLong = loc.getLongitude();
}
}
locManager.removeUpdates(locListener); // removes the periodic updates from location listener to avoid battery drainage. If you want to get location at the periodic intervals call this method using pending intent.
try
{
// Getting address from found locations.
Geocoder geocoder;
List<Address> addresses;
geocoder = new Geocoder(this, Locale.getDefault());
addresses = geocoder.getFromLocation(MyLat, MyLong, 1);
StateName= addresses.get(0).getAdminArea();
CityName = addresses.get(0).getLocality();
CountryName = addresses.get(0).getCountryName();
// you can get more details other than this . like country code, state code, etc.
System.out.println(" StateName " + StateName);
System.out.println(" CityName " + CityName);
System.out.println(" CountryName " + CountryName);
}
catch (Exception e)
{
e.printStackTrace();
}
textView2.setText(""+MyLat);
textView3.setText(""+MyLong);
textView1.setText(" StateName " + StateName +" CityName " + CityName +" CountryName " + CountryName);
}
// Location listener class. to get location.
public class MyLocationListener implements LocationListener {
public void onLocationChanged(Location location) {
if (location != null) {
}
} public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
}
private boolean gps_enabled=false;
private boolean network_enabled=false;
Location location;
Double MyLat, MyLong;
String CityName="";
String StateName="";
String CountryName="";
// below method to get the last remembered location. because we don't get locations all the times .At some instances we are unable to get the location from GPS. so at that moment it will show us the last stored location.
public static Location getLastKnownLocation(Context context)
{
Location location = null;
LocationManager locationmanager = (LocationManager)context.getSystemService("location");
List list = locationmanager.getAllProviders();
boolean i = false;
Iterator iterator = list.iterator();
do
{
//System.out.println("---------------------------------------------------------------------");
if(!iterator.hasNext())
break;
String s = (String)iterator.next();
//if(i != 0 && !locationmanager.isProviderEnabled(s))
if(i != false && !locationmanager.isProviderEnabled(s))
continue;
// System.out.println("provider ===> "+s);
Location location1 = locationmanager.getLastKnownLocation(s);
if(location1 == null)
continue;
if(location != null)
{
//System.out.println("location ===> "+location);
//System.out.println("location1 ===> "+location);
float f = location.getAccuracy();
float f1 = location1.getAccuracy();
if(f >= f1)
{
long l = location1.getTime();
long l1 = location.getTime();
if(l - l1 <= 600000L)
continue;
}
}
location = location1;
// System.out.println("location out ===> "+location);
//System.out.println("location1 out===> "+location);
i = locationmanager.isProviderEnabled(s);
// System.out.println("---------------------------------------------------------------------");
} while(true);
return location; }}
Source
You can download the source from this link
https://github.com/ItsRajesh4uguys/GetCurrentLocationAndAddress
