Apps HELP! : HelloTabWidget Tutorial on Android Developers site FORCE CLOSE

[4ndr01d61r7]

I am an Android developer amateur and I went to Android Developers site to learn more about Android development. I completed the previous tutorials and I am now in Tab Layout. When I got to run the program. It says FORCE CLOSE. I don't know where part of the program I did wrong. The tutorial site never gave in depth description of the code and there were missing blocks which I found out by surfing over the net. I know there are some who has the same problem as mine. I hope this will be solved soon for me to be able to proceed to the next chapter. Thank you in advance.

Here is my code :
src folder :
- com dot android dot HelloTabWidget
- comdotandroiddotHelloTabWidget/HelloTabWidgetActivitydotjava

package com.android.HelloTabWidget;

import android.app.TabActivity;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.util.Log;
import android.widget.TabHost;

public class HelloTabWidgetActivity extends TabActivity  {

private String TAG="HelloTabWidget";

public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);

  Resources res = getResources(); // Resource object to get Drawables
  TabHost tabHost = getTabHost();  // The activity TabHost
  TabHost.TabSpec spec;  // Resusable TabSpec for each tab
  Intent intent;  // Reusable Intent for each tab

  // Create an Intent to launch an Activity for the tab (to be reused)
  intent = new Intent().setClass(this,ArtistsActivity.class);
  Log.v(TAG,"---artist activity is called---");

  // Initialize a TabSpec for each tab and add it to the TabHost
  spec = tabHost.newTabSpec("artists").setIndicator("Artists",res.getDrawable(R.drawable.ic_tab_artists)).setContent(intent);
  tabHost.addTab(spec);


  // Do the same for the other tabs
  intent = new Intent().setClass(this,AlbumsActivity.class);
  Log.v(TAG,"---album activity is called---");
  spec = tabHost.newTabSpec("albums").setIndicator("Albums",res.getDrawable(R.drawable.ic_tab_albums)).setContent(intent);
  tabHost.addTab(spec);

  intent = new Intent().setClass(this, SongsActivity.class);
  Log.v(TAG,"---song activity is called---");
  spec = tabHost.newTabSpec("songs").setIndicator("Songs",res.getDrawable(R.drawable.ic_tab_songs)).setContent(intent);
  tabHost.addTab(spec);

  }

}

- /src/comdotandroiddotHelloTabWidget/AlbumsActivitydotjava

package com.android.HelloTabWidget;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

public class AlbumsActivity extends Activity{
    private String TAG="AlbumsActivity";
    @Override
    public void onCreate(Bundle savedInstance)
    {
        super.onCreate(savedInstance);
        TextView textview_album=new TextView(this);
        textview_album.setText("This is album activity");
        setContentView(textview_album);
        Log.v(TAG,"---in album activity---");
    }

}

- /src/comdotandroiddotHelloTabWidget/ArtistsActivitydotjava

package com.android.HelloTabWidget;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

public class ArtistsActivity extends Activity {
 private String TAG="ArtistsActivity";
    /** Called when the activity is first created. */
    @Override
      public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        TextView textview=new TextView(this);
        textview.setText("This is Artist Activity");
        setContentView(textview);
        Log.v(TAG,"---in artist activity---");
    }
}

- /src/comdotandroiddotHelloTabWidget/SongsActivitydotjava

package com.android.HelloTabWidget;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

public class SongsActivity extends Activity{
    private String TAG="SongsActivity";
    @Override
    public void onCreate(Bundle savedInstance)
    {
        super.onCreate(savedInstance);
        TextView textview_song=new TextView(this);
        textview_song.setText("This is song activity");
        setContentView(textview_song);
        Log.v(TAG,"---in songs activity---");
    }

}

- /res/drawable/ic_tabs_albumsdotxml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- When selected, use grey -->
    <item android:drawable="@drawable/ic_tab_albums_grey"
          android:state_selected="true" />
    <!-- When not selected, use white-->
    <item android:drawable="@drawable/ic_tab_albums_white" />
</selector>

- /res/drawable/ic_tabs_artistsdotxml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- When selected, use grey -->
    <item android:drawable="@drawable/ic_tab_artists_grey"
          android:state_selected="true" />
    <!-- When not selected, use white-->
    <item android:drawable="@drawable/ic_tab_artists_white" />
</selector>

- /res/drawable/ic_tabs_songsdotxml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- When selected, use grey -->
    <item android:drawable="@drawable/ic_tab_songs_grey"
          android:state_selected="true" />
    <!-- When not selected, use white-->
    <item android:drawable="@drawable/ic_tab_songs_white" />
</selector>

- /layout/maindotxml

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:padding="5dp">
        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" />
        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:padding="5dp" />
    </LinearLayout>
</TabHost>

AndroidManifestdotxml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.android.HelloTabWidget"
      android:versionCode="1"
      android:versionName="1.0">
      
   <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="8"/>
    
    <application android:icon="@drawable/ic_launcher"  android:label="@string/app_name">
       <activity android:name=".HelloTabWidget" android:label="@string/app_name" android:theme="@android:style/Theme.NoTitleBar" >
          <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
          </intent-filter>
       </activity>
       <activity android:name=".AlbumsActivity" android:label="@string/app_name"></activity>
       <activity android:name=".ArtistsActivity" android:label="@string/app_name"></activity>   
       <activity android:name=".SongsActivity" android:label="@string/app_name" ></activity>
    </application>
</manifest>