TabHost的基本使用方法

非常简单的例子说明一个TabHost的使用

<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="@android:id/tabhost"
	    android:layout_width="match_parent"
	    android:layout_height="match_parent"
	    android:layout_alignParentBottom="true"
	    android:layout_alignParentLeft="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" >
	
	            <LinearLayout
	                android:id="@+id/tab1"
	                android:layout_width="match_parent"
	                android:layout_height="match_parent" >
	            </LinearLayout>
	
	            <LinearLayout
	                android:id="@+id/tab2"
	                android:layout_width="match_parent"
	                android:layout_height="match_parent" >
	            </LinearLayout>
	
	            <LinearLayout
	                android:id="@+id/tab3"
	                android:layout_width="match_parent"
	                android:layout_height="match_parent" >
	            </LinearLayout>
	        </FrameLayout>
	    </LinearLayout>
	</TabHost>

</RelativeLayout>

package com.msg.vo;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;

public class MainActivity extends Activity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		createTabs();
	}
	
	private void createTabs(){
		TabHost th = (TabHost)findViewById(android.R.id.tabhost);
		th.setup();
		TabSpec ts1 = th.newTabSpec("1");
		ts1.setIndicator("tab1");
		ts1.setContent(R.id.tab1);
		
		TabSpec ts2 = th.newTabSpec("2");
		ts2.setIndicator("tab2");
		ts2.setContent(R.id.tab2);
		
		TabSpec ts3 = th.newTabSpec("3");
		ts3.setIndicator("tab3");
		ts3.setContent(R.id.tab3);
		
		th.addTab(ts1);
		th.addTab(ts2);
		th.addTab(ts3);
	}

}