android google maps issue-Collection of common programming errors

In the program below i am trying to use google map from the following example http://www.vogella.de/articles/AndroidLocationAPI/article.html , i have followed exactly all the steps in the example but some how i am not able t execute it the APP closes down .

Below is my code.Let me know what am i doing wrong here

package ShowMap.com;

import android.app.Activity;
import android.os.Bundle;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.widget.RelativeLayout;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;

public class ShowmapActivity extends MapActivity {
private MapController mapController;
private MapView mapView;
private LocationManager locationManager;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    RelativeLayout linearLayout = (RelativeLayout) findViewById(R.id.mainlayout);
    mapView = (MapView) findViewById(R.id.mapview);
    mapView.setBuiltInZoomControls(true);
    mapView.setStreetView(true);
    mapController = mapView.getController();
    mapController.setZoom(14); // Zoon 1 is world view
    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
            0, new GeoUpdateHandler());

}
protected boolean isRouteDisplayed() {
    return false;
}

public class GeoUpdateHandler implements LocationListener {

    @Override
    public void onLocationChanged(Location location) {
        int lat = (int) (location.getLatitude() * 1E6);
        int lng = (int) (location.getLongitude() * 1E6);
        GeoPoint point = new GeoPoint(lat, lng);
        mapController.animateTo(point); //  mapController.setCenter(point);
    }

    @Override
    public void onProviderDisabled(String provider) {
    }

    @Override
    public void onProviderEnabled(String provider) {
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
    }
}

   }

Main.xml

Android manifest.xml

EDIT:This is the logcat trace

     07-18 15:20:46.065: DEBUG/AndroidRuntime(469): >>>>>>>>>>>>>> AndroidRuntime START > AndroidRuntime START >> AndroidRuntime START

Originally posted 2013-11-09 23:33:06.