How do I display a Simple Google Map in my emulator in android?

I tried to write a simple google map application to display simple map but doesn't give me any output.

I pasted my code below:

AnroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="org.HelloGoogleMaps"
      android:versionCode="1"
      android:versionName="1.0">

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <application android:icon="@drawable/icon" android:label="@string/app_name">
    <uses-library android:name="com.google.android.maps" />


        <activity android:name=".HelloGoogleMaps"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

</manifest> 

My layout file is:

map.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content">

  <com.google.android.maps.MapView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/mapview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:clickable="true"
    android:apiKey="0Z1oyeAgSpj4FSEtenPqiL7RsCXA_pVPQhvtpdA"
/>
</LinearLayout>

And my java class file is:

HelloGoogleMaps.java

package org.HelloGoogleMaps;

import com.google.android.maps.MapView;
import android.app.Activity;
import android.os.Bundle;


public class HelloGoogleMaps extends Activity {
      @Override

      public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.map);
        MapView mapView = (MapView) findViewById(R.i开发者_如何学JAVAd.mapview);
        mapView.setBuiltInZoomControls(true);

    }

    protected boolean isRouteDisplayed() {
     return false;
    }
}

I can't see your layout file, but have you set a proper API key?

http://code.google.com/android/maps-api-signup.html

Your HelloGoogleMaps should inherit the MapsActivity Just change your code to

public class HelloGoogleMaps extends MapActivity {

    @Override
    protected boolean isRouteDisplayed() {
        // TODO Auto-generated method stub
        return false;
    }

}