Little Bit of Background to run GPS example in android device.

1. To add GPS Functionality in your Android application, you will have to add the ACCESS_FINE_LOCATION permission to the androidManifest.xml

e.g.

<?xml version=”1.0″ encoding=”utf-8″?>

<manifest xmlns:android=”http://schemas.android.com/apk/res/android” package=”net.learn2develop.GPS”> <uses-permission android:name=”android.permission.ACCESS_FINE_LOCATION” />

<application android:icon=”@drawable/icon” android:label=”@string/app_name”>

<activity android:name=”.GPS” 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>

2. In Android, Loc based services are provided by the

– LocationManager class in android.location package.

Your device can obtain periodic updates of the device’s geographical locations. Android application fires intent when it enters the proximity of a certain location.

3. Connect to android console to give commands to androids host (e.g. Emulator or device)…

tools>telnet

telnet> 0 localhost 5554

(this will connect to the currently active device….)

geo fix -77.230488 38.916336

4. Sample Code … Thread locThread = new Thread(new Runnable(){

public void run() {

LocationListenerImpl loclistImpl= new LocationListenerImpl (this);LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, loclistImpl);

Location loc = this.getLocation();

// Get Location With these two methods…

// loc.getLatitude();

// loc.getLongitude();

}});

locThread.start();

/*LocationListenerImpl class that listenes for Geo location…*/

public class LocationListenerImpl implements LocationListener{

LocationCallBack locationCallBack;

public LocationListenerImpl (LocationCallBack locationCallBack) {

super();this.locationCallBack = locationCallBack;

}

public void onLocationChanged(Location loc) {

locationCallBack.setLocation(loc);

}

public void onProviderDisabled(String arg0) {}

public void onProviderEnabled(String arg0) {}

public void onStatusChanged(String arg0, int arg1, Bundle arg2) {}

}

***After running the code , You will have to run commands given in point 3. So that LocationListenerImpl’s onLocationChanged method will get a call with the provided location ***