TabHost与RadioGroup结合完成的菜单【带效果图】5个Activity

效果图：

首先看布局文件：

<?xml version="1.0" encoding="UTF-8"?><TabHost android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent"  xmlns:android="http://schemas.android.com/apk/res/android">    <LinearLayout         android:orientation="vertical"         android:layout_width="fill_parent"         android:layout_height="fill_parent">        <FrameLayout             android:id="@android:id/tabcontent"             android:layout_width="fill_parent"             android:layout_height="0.0dip"             android:layout_weight="1.0" />        <TabWidget             android:id="@android:id/tabs"             android:visibility="gone"             android:layout_width="fill_parent"             android:layout_height="wrap_content"             android:layout_weight="0.0" />        <RadioGroup             android:gravity="center_vertical"             android:layout_gravity="bottom"             android:orientation="horizontal"             android:id="@+id/main_radio"             android:background="@drawable/maintab_toolbar_bg"             android:layout_width="fill_parent"             android:layout_height="wrap_content">            <RadioButton                 android:id="@+id/radio_button0"                 android:tag="radio_button0"                 android:layout_marginTop="2.0dip"                 android:text="@string/alarm"                 android:drawableTop="@drawable/icon_1"                 style="@style/main_tab_bottom" />            <RadioButton                 android:id="@+id/radio_button1"                 android:tag="radio_button1"                 android:layout_marginTop="2.0dip"                 android:text="@string/message"                 android:drawableTop="@drawable/icon_2"                 style="@style/main_tab_bottom" />            <RadioButton                 android:id="@+id/radio_button2"                 android:tag="radio_button2"                 android:layout_marginTop="2.0dip"                 android:text="@string/photo"                 android:drawableTop="@drawable/icon_3"                 style="@style/main_tab_bottom" />            <RadioButton                 android:id="@+id/radio_button3"                 android:tag="radio_button3"                 android:layout_marginTop="2.0dip"                 android:text="@string/music"                 android:drawableTop="@drawable/icon_4"                 style="@style/main_tab_bottom" />            <RadioButton                 android:id="@+id/radio_button4"                 android:tag="radio_button4"                 android:layout_marginTop="2.0dip"                 android:text="@string/setting"                 android:drawableTop="@drawable/icon_5"                 style="@style/main_tab_bottom" />        </RadioGroup>    </LinearLayout></TabHost>

需要注意的是，如果用TabHost这个控件，其中有几个ID是必须这么写的，android:id="@android:id/tabhost ；android:id="@android:id/tabcontent" ；android:id="@android:id/tabs" ；之所以要这么写是因为在TabHost这个类中。需要实例化上述这个ID的控件
在TabActivity中有么个方法：

 1 package com.iteye.androidtoast; 2  3 import android.app.TabActivity; 4 import android.content.Intent; 5 import android.os.Bundle; 6 import android.widget.RadioGroup; 7 import android.widget.RadioGroup.OnCheckedChangeListener; 8 import android.widget.TabHost; 9 10 public class MainActivity extends TabActivity implements OnCheckedChangeListener{11     12     private TabHost mHost;13     private RadioGroup radioderGroup;14     15     public void onCreate(Bundle savedInstanceState) {16         super.onCreate(savedInstanceState);17         setContentView(R.layout.maintabs);18         //实例化TabHost19         mHost=this.getTabHost();20         21       //添加选项卡22         mHost.addTab(mHost.newTabSpec("ONE").setIndicator("ONE")23                     .setContent(new Intent(this,OneActivity.class)));24         mHost.addTab(mHost.newTabSpec("TWO").setIndicator("TWO")25                 .setContent(new Intent(this,TwoActivity.class)));26         mHost.addTab(mHost.newTabSpec("THREE").setIndicator("THREE")27                 .setContent(new Intent(this,ThreeActivity.class)));28         mHost.addTab(mHost.newTabSpec("FOUR").setIndicator("FOUR")29                 .setContent(new Intent(this,FourActivity.class)));30         mHost.addTab(mHost.newTabSpec("FIVE").setIndicator("FIVE")31                 .setContent(new Intent(this,FiveActivity.class)));32         33         radioderGroup = (RadioGroup) findViewById(R.id.main_radio);34         radioderGroup.setOnCheckedChangeListener(this);35     }36      37     public void onCheckedChanged(RadioGroup group, int checkedId) {38         switch(checkedId){39         case R.id.radio_button0:40             mHost.setCurrentTabByTag("ONE");41             break;42         case R.id.radio_button1:43             mHost.setCurrentTabByTag("TWO");44             break;45         case R.id.radio_button2:46             mHost.setCurrentTabByTag("THREE");47             break;48         case R.id.radio_button3:49             mHost.setCurrentTabByTag("FOUR");50             break;51         case R.id.radio_button4:52             mHost.setCurrentTabByTag("FIVE");53             break;54         }        55     }56 }

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