------------------------------------------------------------java소스-------------------------------------------------------------------------------
package com.windev.bookmarkroid;

import android.app.Activity;
import android.os.Bundle;
import android.view.Window;
import android.app.TabActivity;
import android.widget.TabHost;

public class Bookmarkroid extends TabActivity
{
    /** Called when the activity is first created. */

 @Override
    public void onCreate(Bundle savedInstanceState)
 {
        super.onCreate(savedInstanceState);
       // requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.now);

        TabHost mTabHost = getTabHost();
       
        mTabHost.addTab(mTabHost.newTabSpec("now")
          .setIndicator("Now")
          .setContent(R.id.nowtab)
          );
        mTabHost.addTab(mTabHost.newTabSpec("books")
          .setIndicator("Books")
          .setContent(R.id.bookstab)
          );
        mTabHost.addTab(mTabHost.newTabSpec("setting")
          .setIndicator("Setting")
          .setContent(R.id.settingtab)
          );  
    }
}
------------------------------------------------------------xml소스-------------------------------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
 android:id="@+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">

   <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">
                
                <LinearLayout android:id="@+id/nowtab"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
                 android:orientation="vertical">
     
      <TextView android:id="@+id/now"
                      android:layout_width="wrap_content"
                         android:layout_height="fill_parent"
                         android:text="이것은 now"/>
                  </LinearLayout>
                
                  <LinearLayout android:id="@+id/bookstab"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
                 android:orientation="vertical">
                
                 <TextView android:id="@+id/books"
                  android:layout_width="fill_parent"
                   android:layout_height="wrap_content"
                  android:text="이것은 books"/>
                  </LinearLayout>
                
                  <LinearLayout android:id="@+id/settingtab"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
                 android:orientation="vertical">
                
                 <TextView android:id="@+id/setting"
                  android:layout_width="fill_parent"
                  android:layout_height="wrap_content"
                  android:text="이것은 setting"/>
                    </LinearLayout>                           
    </FrameLayout>    
 </LinearLayout>
</TabHost>

뭐가 문제죠 -_-;