MapView in android is Totally Black
<p>i am using mapView in my application. on my emulator i am getting black screen instead this map. i have added the permissions and added the <code>&lt;uses-library android:name="com.google.android.maps"/&gt;</code>tag.When i run my app on my emulator it displays black screen instead of map.</p>

<pre><code>public class MainActivity extends MapActivity {

    MapView mv;
    MapController mc;
    GeoPoint mPoint;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mv = (MapView) findViewById(R.id.map);
        mv.setBuiltInZoomControls(true);
        mv.setSatellite(true);
        mc = mv.getController();
        mPoint = new GeoPoint(70, 30);
        mc.animateTo(mPoint);
        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), android.R.drawable.sym_action_email);
        MarkerOverlay mo = new MarkerOverlay(bitmap);
        mv.getOverlays().add(mo);
    }

    @Override
    protected boolean isRouteDisplayed() {
        return false;
    }
    class MarkerOverlay extends Overlay{
        Bitmap marker;
        public MarkerOverlay(Bitmap bitmap) {
            this.marker = bitmap;
        }
        @Override
        public void draw(Canvas canvas, MapView mapView, boolean shadow) {
            super.draw(canvas, mapView, shadow);
            Point p = new Point();
            mapView.getProjection().toPixels(mPoint, p);
            canvas.drawBitmap(marker, p.x, p.y,null);
        }
    }


}
</code></pre>

<p>layout.xml</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" &gt;

    &lt;com.google.android.maps.MapView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:id="@+id/map"
        android:apiKey="0N2w90XW-PeM2vP4D4yfM2CoLRfIF6nnZAr2Cqg" /&gt;

&lt;/LinearLayout&gt;
</code></pre>

<p>manifest.xml</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.overlays"
    android:versionCode="1"
    android:versionName="1.0" &gt;

    &lt;uses-sdk
        android:minSdkVersion="5"
        android:targetSdkVersion="10" /&gt;
    &lt;uses-permission android:name="android.permission.INTERNET"/&gt;
    &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/&gt;
    &lt;uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/&gt;

    &lt;application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" &gt;
        &lt;uses-library android:name="com.google.android.maps"/&gt;
        &lt;activity
            android:name="com.example.overlays.MainActivity"
            android:label="@string/app_name" &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;/application&gt;

&lt;/manifest&gt;
</code></pre>
