有时候常常使用别人用Tabhost+其他的实现demo。单纯利用Tabhost该怎样使用呢？

以下看样例：

public class MainActivity extends TabActivity {	public TabHost tabHost;	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		// 获取对象		tabHost = getTabHost();		tabHost.addTab(tabHost.newTabSpec("index").setIndicator("实时新闻")				.setContent(new Intent(this, IndexActivity.class)));		tabHost.addTab(tabHost.newTabSpec("center").setIndicator("我的空间")				.setContent(new Intent(this, MiddleActivity.class)));		tabHost.addTab(tabHost.newTabSpec("self").setIndicator("设置")				.setContent(new Intent(this, LastActivity.class)));		// 指定的当前的tab		// 通过索引指定 索引从0開始		// 即一開始要显示的是哪一页		tabHost.setCurrentTab(0); // 从零開始	}	@Override	public boolean onCreateOptionsMenu(Menu menu) {		// Inflate the menu; this adds items to the action bar if it is present.		getMenuInflater().inflate(R.menu.main, menu);		return true;	}}

二、效果图

（2）Tabhost选项卡置于底部的样例

採用LinearLayout布局。设置Weight属性就能够将选项卡位于底部

1、xml布局文件

xml version="1.0" encoding="utf-8"?> <TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@android:color/white" android:orientation="vertical" > <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="0dip" android:layout_weight="1.0" > </FrameLayout> <TabWidget android:id="@android:id/tabs" android:layout_width="match_parent" android:layout_height="wrap_content" > </TabWidget> </LinearLayout> </TabHost>

2、MainActivity

public class MainActivity extends ActivityGroup{    private TabHost mTabHost;    @Override    protected void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initTabs();    }    private void initTabs()    {        mTabHost = (TabHost) findViewById(R.id.tabhost);        mTabHost.setup(this.getLocalActivityManager());                Intent intent = new Intent(this, HomepageActivity.class);        mTabHost.addTab(mTabHost.newTabSpec("Tab1")                .setIndicator(getString(R.string.homepage_indicator), getResources().getDrawable(R.drawable.homepage_indicator_selector))                .setContent(intent));               intent = new Intent(this, BillboardActivity.class);        mTabHost.addTab(mTabHost.newTabSpec("Tab2")                .setIndicator(getString(R.string.billboard_indicator), getResources().getDrawable(R.drawable.billboard_indicator_selector))                .setContent(intent));                intent = new Intent(this, MyLotteryActivity.class);        mTabHost.addTab(mTabHost.newTabSpec("Tab3")                .setIndicator(getString(R.string.mylottery_indicator), getResources().getDrawable(R.drawable.mylottery_indicator_selector))                .setContent(intent));                intent = new Intent(this, MoreActivity.class);        mTabHost.addTab(mTabHost.newTabSpec("Tab4")                .setIndicator(getString(R.string.more_indicator), getResources().getDrawable(R.drawable.more_indicator_selector))                .setContent(intent));    }}

3、效果图