TabHost是Android中自带的选项卡控件，效果图如下：

主布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <TabHost
        android:id="@+id/tabhost"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical" >

            <TabWidget
                android:id="@android:id/tabs"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >
            </TabWidget>

            <FrameLayout
                android:id="@android:id/tabcontent"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical" >

                <LinearLayout
                    android:id="@+id/tab1"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:orientation="vertical" >
                </LinearLayout>

                <LinearLayout
                    android:id="@+id/tab2"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent" 
                    android:orientation="vertical">
                </LinearLayout>

                <LinearLayout
                    android:id="@+id/tab3"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:orientation="vertical" >
                </LinearLayout>
            </FrameLayout>
        </LinearLayout>
    </TabHost>

</RelativeLayout>

核心代码：

package com.tabhost;

import android.os.Bundle;
import android.app.Activity;
import android.app.ActivityGroup;
import android.content.Intent;
import android.view.Menu;
import android.view.Window;
import android.widget.TabHost;

public class MainActivity extends ActivityGroup {


    private TabHost mTabHost;
     
      protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
        // 设置TabHost
        initTabs();
      }
     
      private void initTabs() {
        mTabHost = (TabHost) findViewById(R.id.tabhost);
        mTabHost.setup(this.getLocalActivityManager());
        // 添加日志列表的tab,注意下面的setContent中的代码.是这个需求实现的关键
        mTabHost.addTab(mTabHost.newTabSpec("tab_log")
          .setIndicator("日志",getResources().getDrawable(R.drawable.login_bg))
          .setContent(new Intent(this, LogActivity.class)));
     
        // 添加应用设置的tab,注意下面的setContent中的代码.是这个需求实现的关键
        mTabHost.addTab(mTabHost.newTabSpec("tab_setting")
          .setIndicator("设置",getResources().getDrawable(R.drawable.ic_launcher))
          .setContent(new Intent(this, SettingActivity.class)));
        mTabHost.setC