package com.myhost;

 import android.os.Bundle;

 import android.view.LayoutInflater;

 import android.widget.TabHost;

 import android.app.TabActivity;

 public class TabhostActivity extends TabActivity {    // Extend TabActivity class

     /** Called when the activity is first created. */

     @Override

     public void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

        TabHost tabHost = this.getTabHost();  // The activity TabHost

         LayoutInflater.from(this).inflate(R.layout.main,tabHost.getTabContentView(), true);

         tabHost.addTab(tabHost.newTabSpec("tab1")

                 .setIndicator("tab1", getResources()

                         .getDrawable(R.drawable.chartareaup_green))

                         .setContent(R.id.linearLayout1));

         tabHost.addTab(tabHost.newTabSpec("tab2")

                 .setIndicator("tab2", getResources()

                         .getDrawable(R.drawable.home_yellow))

                         .setContent(R.id.linearLayout2));     

         tabHost.addTab(tabHost.newTabSpec("tab3")

                 .setIndicator("tab3", getResources()

                         .getDrawable(R.drawable.harddrivedownload_red))

                         .setContent(R.id.linearLayout3));    

         tabHost.addTab(tabHost.newTabSpec("tab4")

                 .setIndicator("tab4", getResources()

                         .getDrawable(R.drawable.shoppingcart_blue))

                         .setContent(R.id.linearLayout4));

     }

 }

 package net.weibo.ui;

 import android.app.TabActivity;

 import android.content.Intent;

 import android.os.Bundle;

 import android.util.Log;

 import android.widget.RadioGroup;

 import android.widget.RadioGroup.OnCheckedChangeListener;

 import android.widget.TabHost;

 import android.widget.TabHost.TabSpec;

 public class MainActivity extends TabActivity {

     /** Called when the activity is first created. */

     public TabHost mth;

     public static final String TAB_HOME="HOME";

     public static final String TAB_MSG="INFORMATION";

     public static final String TAB_ABT="ABOUT";

     public static final String TAB_SEH="SEARCH";

     public static final String TAB_MORE="MORE";

     public RadioGroup radioGroup;

     @Override

     public void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.main);

         mth=this.getTabHost(); //mth 等於上一段第18行的寫法。

         TabSpec ts1=mth.newTabSpec(TAB_HOME).setIndicator(TAB_HOME);

         ts1.setContent(new Intent(MainActivity.this,FirstActivity.class));

         mth.addTab(ts1);

         TabSpec ts2=mth.newTabSpec(TAB_MSG).setIndicator(TAB_MSG);

         ts2.setContent(new Intent(MainActivity.this,SecondActivity.class));

         mth.addTab(ts2);

         TabSpec ts3=mth.newTabSpec(TAB_ABT).setIndicator(TAB_ABT);

         ts3.setContent(new Intent(MainActivity.this,ThirdActivity.class));

         mth.addTab(ts3);

         TabSpec ts4=mth.newTabSpec(TAB_SEH).setIndicator(TAB_SEH);

         ts4.setContent(new Intent(MainActivity.this,ForthActivity.class));

         mth.addTab(ts4);

         TabSpec ts5=mth.newTabSpec(TAB_MORE).setIndicator(TAB_MORE);

         ts5.setContent(new Intent(MainActivity.this,FifthActivity.class));

         mth.addTab(ts5);

         this.radioGroup=(RadioGroup)findViewById(R.id.main_radio);

         radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {

                 @Override

                 public void onCheckedChanged(RadioGroup group, int checkedId) {

                     // TODO Auto-generated method stub

                     switch(checkedId){

                         case R.id.radio_button0:

                             mth.setCurrentTabByTag(TAB_HOME);

                             break;

                         case R.id.radio_button1:

                             mth.setCurrentTabByTag(TAB_MSG);

                             break;

                         case R.id.radio_button2:

                             mth.setCurrentTabByTag(TAB_ABT);

                             break;

                         case R.id.radio_button3:

                             mth.setCurrentTabByTag(TAB_SEH);

                             break;

                         case R.id.radio_button4:

                             mth.setCurrentTabByTag(TAB_MORE);

                             break;

                     }

                 }

             });

     }

 }