Android :: Unable To Import Com.google.android.maps.MapView?

import android.app.Activity;
import android.os.Bundle;
import android.widget.LinearLayout;
import android.view.ViewGroup;
import android.widget.*;
import com.google.android.maps.MapView;

public class MapView extends MapActivity{
/** Called when the activity is first created. */
LinearLayout linearLayout;
MapView mapView;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map);
mapView = (MapView) findViewById(R.id.mapview);
mapView.setBuiltInZoomControls(true);
MapController mapController = mapView.getController();
}
}