How to turn on wireless network feature of phone by code?

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Mobile

Android

I am not getting latitude and longitude without this feature from GPS.
when I turn on feature which is on Settings>location>Use Wireless Network(On)
I can get latitude longitude ...

Is there any other way to solve this?
Any sammple code to turn on feature


I can turn on GPS satellite by this...

Intent intent = new Intent("android.location.GPS_ENABLED_CHANGE");
intent.putExtra("enabled", true);
sendBroadcast(intent);

My code is this to get latitude and longitude...

/**
 * For Getting Gps latitude longitude
 */

locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();

// Getting the name of the provider that meets the
// criteria
provider = locationManager.getBestProvider(criteria,
        false);

System.out.println(provider);


if (provider != null && !provider.equals("")) {

    // Get the location from the given provider
    Location location = locationManager
            .getLastKnownLocation(provider);

    locationManager.requestLocationUpdates(provider,
            20000, 1,this);

    System.out.println(location);

    if (location != null) {
        onLocationChanged(location);
        System.out.println(latitude + longitude);


    } else {
        System.out.println("Location not retrived...");
    }

    @Override
public void onLocationChanged(Location location) {
    // Getting reference to TextView tv_longitude
    latitude = location.getLatitude();
    longitude = location.getLongitude();
}

@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
}