Android Google Maps
<p>I use the google code from devloper.android.com
I use that application but in the emulator it shows only the crossed lines not the map
so is there any settings in emulator for displaying maps 
HelloItemizedOverlay.java</p>

<pre><code>package com.HelloGoogleMaps;
import java.util.ArrayList;
import android.app.AlertDialog;
import android.content.Context;
import android.graphics.drawable.Drawable;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.OverlayItem;

public class HelloItemizedOverlay extends ItemizedOverlay {
    ArrayList&lt;OverlayItem&gt; mOverlays;
    Context mContext;

  public HelloItemizedOverlay(Drawable defaultMarker) {
    super(boundCenterBottom(defaultMarker));
    mOverlays = new ArrayList&lt;OverlayItem&gt;();
    // TODO Auto-generated constructor stub
  }

  public HelloItemizedOverlay(Drawable defaultMarker, Context context) {
    super(defaultMarker);
    mContext = context;
  }

  @Override
  protected OverlayItem createItem(int i) {
    // TODO Auto-generated method stub
    return mOverlays.get(i);
  }

  @Override
  public int size() {
    // TODO Auto-generated method stub
    return mOverlays.size();
  }

  public void addOverlay(OverlayItem overlay) {
    mOverlays.add(overlay);
    populate();
  }

  @Override
  protected boolean onTap(int index) {
    OverlayItem item = mOverlays.get(index);
    AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
    dialog.setTitle(item.getTitle());
    dialog.setMessage(item.getSnippet());
    dialog.show();
    return true;
  }

}
</code></pre>

<p>HelloGoogleMaps.java</p>

<pre><code>package com.HelloGoogleMaps;
import java.util.List;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import com.google.android.maps.OverlayItem;
import android.app.Activity;
import android.graphics.drawable.Drawable;
import android.os.Bundle;

public class HelloGoogleMaps extends MapActivity  {
     /** Called when the activity is first created. */
     @Override
     public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        MapView mapView = (MapView) findViewById(R.id.mapview);
        mapView.setBuiltInZoomControls(true);
        List&lt;Overlay&gt; mapOverlays = mapView.getOverlays();
        Drawable drawable = this.getResources().getDrawable(R.drawable.androidmarker);
        HelloItemizedOverlay itemizedoverlay = new HelloItemizedOverlay(drawable);
        GeoPoint point = new GeoPoint(19240000,-99120000);
        OverlayItem overlayitem = new OverlayItem(point, "Hola, Mundo!", 
                                    "I'm in Mexico   City!");

        itemizedoverlay.addOverlay(overlayitem);
        mapOverlays.add(itemizedoverlay);
   }

   @Override
   protected boolean isRouteDisplayed() {
       return false;
   }
}
</code></pre>

<p>Android Manifest.xml</p>

<p>
</p>

<pre><code>&lt;application android:icon="@drawable/icon" android:label="@string/app_name"&gt;
    &lt;activity android:name=".HelloGoogleMaps"
              android:label="@string/app_name"
              android:theme="@android:style/Theme.NoTitleBar"&gt;&gt;
        &lt;intent-filter&gt;
            &lt;action android:name="android.intent.action.MAIN" /&gt;
            &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
        &lt;/intent-filter&gt;
    &lt;/activity&gt;

&lt;uses-library android:name="com.google.android.maps" android:required="true"&gt;&lt;/uses-library&gt;
</code></pre>

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