1,xml布局

<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:id="@android:id/tabhost"
    android:layout_height="match_parent"
   >
   <LinearLayout
       android:layout_width="fill_parent"
       android:layout_height="fill_parent"
       android:orientation="vertical">
       <!-- 标签 -->
       <TabWidget
       android:layout_width="fill_parent"
       android:layout_height="wrap_content"
       android:id="@android:id/tabs">      
   </TabWidget> 
   <!-- 内容 -->
   <FrameLayout
       android:layout_width="fill_parent"
       android:layout_height="fill_parent"
       android:id="@android:id/tabcontent">
       <LinearLayout
           android:layout_width="fill_parent"
           android:layout_height="fill_parent"
           android:id="@+id/ll_one">
           <TextView
               android:layout_width="fill_parent"
               android:layout_height="fill_parent"
               android:background="#0000ff"
               android:text="@string/one"
               />
       </LinearLayout>
       <LinearLayout
           android:layout_width="fill_parent"
           android:layout_height="fill_parent"
           android:id="@+id/ll_two">
           <TextView
               android:layout_width="fill_parent"
               android:layout_height="fill_parent"
               android:background="#0000ff"
               android:text="@string/two"
               />
       </LinearLayout>
       <LinearLayout
           android:layout_width="fill_parent"
           android:layout_height="fill_parent"
           android:id="@+id/ll_three">
           <TextView
               android:layout_width="fill_parent"
               android:layout_height="fill_parent"
               android:background="#0000ff"
               android:text="@string/three"
               />
       </LinearLayout>     
   </FrameLayout>  
    </LinearLayout>
</TabHost>

2,activity代码

public class MainActivity extends Activity {
    private TabHost tab;
    private String [] title = new String []{"标题一","标题二","标题三"};
    private int [] ll_ids = new int []{R.id.ll_one,R.id.ll_two,R.id.ll_three};   
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //调用系统的id
        tab = (TabHost) findViewById(android.R.id.tabhost);   
        //启动tabhost
        tab.setup();     
        for (int i = 0; i < title.length; i++) {
            //新建tabspec
            TabSpec tabSpec = tab.newTabSpec("tab"+i);
            //加标签
            tabSpec.setIndicator(title[i]);
            //加内容
            tabSpec.setContent(ll_ids[i]);
            //放入tabhost
            tab.addTab(tabSpec);         
        }
        //显示当前的tabhost
        tab.setCurrentTab(0);   
    }  
}