TabWidget

TabTest.java
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package org.hualang.tab;
import android.app.Activity;
import android.app.TabActivity;
import android.graphics.Color;
import android.os.Bundle;
import android.widget.TabHost;
import android.widget.Toast;
import android.widget.TabHost.OnTabChangeListener;
public class TabTest extends TabActivity {
/** Called when the activity is first created. */
TabHost tabhost;
@Override
public void onCreate(Bundle savedInstanceState) {
super .onCreate(savedInstanceState);
setContentView(R.layout.main);
//取得TabHost对象
tabhost = getTabHost();
//为TabHost添加标签
//新建一个newTabSpec(newTabSpec)
//设置其标签和图标（setIndicator）
//设置内容（setContent）
tabhost.addTab(tabhost.newTabSpec( "tab1" )
.setIndicator( "TAB 1" ,getResources().getDrawable(R.drawable.img1))
.setContent(R.id.text1));
tabhost.addTab(tabhost.newTabSpec( "tab2" )
.setIndicator( "TAB 2" ,getResources().getDrawable(R.drawable.img2))
.setContent(R.id.text2));
tabhost.addTab(tabhost.newTabSpec( "tab3" )
.setIndicator( "TAB 3" ,getResources().getDrawable(R.drawable.img3))
.setContent(R.id.text3));
//设置TabHost的背景颜色
//tabhost.setBackgroundColor(Color.argb(150,22,70,150));
//设置TabHost的背景图片资源
tabhost.setBackgroundResource(R.drawable.bg0);
//设置当前显示哪个标签
tabhost.setCurrentTab( 0 );
//标签切换事件处理，setOnTabChangedListener
tabhost.setOnTabChangedListener( new OnTabChangeListener()
{
public void onTabChanged(String tabId)
{
Toast toast=Toast.makeText(getApplicationContext(), "现在是" +tabId+ "标签" , Toast.LENGTH_SHORT);
toast.show();
}
});

}
}

xml version = "1.0" encoding = "utf-8" ?>
< TabHost xmlns:android = ""
android:id = "@android: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" >
< TextView
android:id = "@+id/text1"
android:layout_width = "fill_parent"
android:layout_height = "fill_parent"
android:text = "选项卡1" />
< TextView
android:id = "@+id/text2"
android:layout_width = "fill_parent"
android:layout_height = "fill_parent"
android:text = "选项卡2" />
< TextView
android:id = "@+id/text3"
android:layout_width = "fill_parent"
android:layout_height = "fill_parent"
android:text = "选项卡3" />
FrameLayout >
LinearLayout >
TabHost >