Finding Own Current Location

mayanks · by **mayanks** » Mon Jun 23, 2008 12:45 pm

Hello PlusMinus,

I am a new to android

I am trying to find my current location using the following piece of code:
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LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
 
                Location location = locationManager.getCurrentLocation("gps"); 
 
                final String  latitudeString = String.valueOf( location.getLatitude()); 
 
                final String longitudeString = String.valueOf( location.getLongitude());
Parsed in 0.031 seconds,  using GeSHi 1.0.8.4

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But at line "Location location = locationManager.getCurrentLocation("gps"); " , I am getting a null pointer exception. In debug perspective of eclipse, I am getting following exception

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DEBUG/dalvikvm(517): Exception Ljava/lang/NullPointerException; from LocationManagerService.java:690 not caught locally
 
ERROR/JavaBinder(517): *** Uncaught remote exception!  (Exceptions are not yet supported across processes.)
 
ERROR/JavaBinder(517): java.lang.NullPointerException
 
ERROR/JavaBinder(517):     at android.server.LocationManagerService.getCurrentLocation(LocationManagerService.java:690)
 
ERROR/JavaBinder(517):     at android.location.ILocationManager$Stub.onTransact(ILocationManager.java:149)
 
ERROR/JavaBinder(517):     at android.os.Binder.execTransact(Binder.java:274)
 
ERROR/JavaBinder(517):     at android.dalvik.NativeStart.run(Native Method)
Parsed in 0.032 seconds,  using GeSHi 1.0.8.4

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For gps, I have also provided user permissions in Mainifest.xml file as follows:
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package="com.abc.move">
 
 <uses-permission android:name="android.permission.ACCESS_LOCATION"></uses-permission>
 
<uses-permission android:name="android.permission.ACCESS_GPS"></uses-permission>
 
<uses-permission android:name="android.permission.ACCESS_ASSISTED_GPS"></uses-permission>
 
<uses-permission android:name="android.permission.ACCESS_CELL_ID"></uses-permission>
 
     <application android:icon="@drawable/icon">
Parsed in 0.002 seconds,  using GeSHi 1.0.8.4

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Is there something wrong in my code, or am i missing some configuration for this?
Is it mandatory to create mock LocationProviders for it.
If yes, relative to which path we need to put "/data/misc/location/<provider_name>/abc.kml"

Thanks in advance,
Mayank

shiteiru · by **shiteiru** » Mon Jun 23, 2008 5:55 pm

try out this piece of code........should work....at least it does for me

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import android.location.Location;
 
import android.location.LocationManager;
 
import java.text.DecimalFormat;
 
protected LocationManager myLocationManager = null;
 
protected Location myLocation = null;
 
this.myLocationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
 
this.myLocation = this.myLocationManager.getCurrentLocation("gps");
 
DecimalFormat df = new DecimalFormat("#00.000000");
 
String lat_str = df.format(this.myLocation.getLatitude());
 
String lng_str = df.format(this.myLocation.getLongitude());
 
Parsed in 0.036 seconds,  using GeSHi 1.0.8.4

mayanks · by **mayanks** » Tue Jun 24, 2008 6:09 am

Hello Shiteiru,

Thank you for your help.
The code worked fine.

Regards,
Mayank

liaowg · by **liaowg** » Thu Oct 09, 2008 6:19 am

shiteiru wrote:try out this piece of code........should work....at least it does for me

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import android.location.Location;

import android.location.LocationManager;

import java.text.DecimalFormat;

protected LocationManager myLocationManager = null;

protected Location myLocation = null;

this.myLocationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);

this.myLocation = this.myLocationManager.getCurrentLocation("gps");

DecimalFormat df = new DecimalFormat("#00.000000");

String lat_str = df.format(this.myLocation.getLatitude());

String lng_str = df.format(this.myLocation.getLongitude());

Parsed in 0.037 seconds, using GeSHi 1.0.8.4

What's the difference between this and the not-working code?

Finding Own Current Location

Finding Own Current Location

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