隐藏tabwidgt 用radiogroup来实现tab的切换

<img title="隐藏tabwidgt" 用radiogroup来实现tab的切换" name=image_operate_26901323934752386 alt="隐藏tabwidgt 用radiogroup来实现tab的切换" src="http://s4.sinaimg.cn/middle/5da93c8fgb41c929e31b3&690" width=329 height=484 real_src="http://s4.sinaimg.cn/middle/5da93c8fgb41c929e31b3&690">

Java代码：
package com.studio.test.mm;

import android.app.TabActivity;
import android.os.Bundle;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.TabHost;

public class MainTabUI extends TabActivity {
public static final String TAB_WENXIN = "微信";
public static final String TAB_ADRESS = "通讯录";
public static final String TAB_FRIENDS = "找朋友";
public static final String TAB_SETTING = "设置";

private TabHost tabHost=null;
private TabHost.TabSpec spec=null;
private RadioGroup tab_group;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_tab_radiogroup);

tabHost=getTabHost();//获取系统的tabHost对象

spec=tabHost.newTabSpec(TAB_WENXIN);
spec.setContent(R.id.txt1).setIndicator(TAB_WENXIN);
tabHost.addTab(spec);
spec=tabHost.newTabSpec(TAB_ADRESS);
spec.setContent(R.id.txt2).setIndicator(TAB_ADRESS);
tabHost.addTab(spec);
spec=tabHost.newTabSpec(TAB_FRIENDS);
spec.setContent(R.id.txt3).setIndicator(TAB_FRIENDS);
tabHost.addTab(spec);
spec=tabHost.newTabSpec(TAB_SETTING);
spec.setContent(R.id.txt4).setIndicator(TAB_SETTING);
tabHost.addTab(spec);

setDefaultTab(0);//设置默认的内容页

tab_group=(RadioGroup)findViewById(R.id.main_tab_group);
tab_group.setOnCheckedChangeListener(new OnCheckedChangeListener() {

@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
//checkedId指当前选中的RadioButton的ID，等于group.getCheckedRadioButtonId().
switch (checkedId) {
case R.id.main_tab_weixin: 
tabHost.setCurrentTabByTag(TAB_WENXIN);//设置当前TabHost内容页
break;
case R.id.main_tab_address:
tabHost.setCurrentTabByTag(TAB_ADRESS);
break;
case R.id.main_tab_find_friend:
tabHost.setCurrentTabByTag(TAB_FRIENDS);
break;
case R.id.main_tab_settings:
tabHost.setCurrentTabByTag(TAB_SETTING);
break;
default:
break;
}

}
});
}
}
最关键就是下面这个XML了。它调用系统的tabhost。 
布局文件：
<?xml version="1.0" encoding="utf-8"?>
<!--微信 通讯录 找朋友 设置 底部选项卡-->
<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:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical">
<FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="0.0dip" android:layout_weight="1.0" >
<TextView
android:id="@+id/txt1" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:text="Button 1" 
android:textSize="36sp" 
android:textColor="#4a9ad8"/>
<TextView
android:id="@+id/txt2" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:text="Button 2" 
android:textSize="36sp" 
android:textColor="#4a9ad8"/>
<TextView
android:id="@+id/txt3" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:text="Button 3" 
android:textSize="36sp" 
android:textColor="#4a9ad8"/>
<TextView
android:id="@+id/txt4" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:text="Button 4" 
android:textSize="36sp" 
android:textColor="#4a9ad8"/>
</FrameLayout>
<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="bottom" android:layout_gravity="bottom" android:orientation="horizontal" android:id="@id/main_tab_group" android:background="@drawable/mmfooter_bg" android:paddingTop="2.0dip" android:layout_width="fill_parent" android:layout_height="wrap_content">
<RadioButton android:id="@id/main_tab_weixin" android:checked="true" android:text="@string/main_title" android:drawableTop="@drawable/tab_weixin" style="@style/MMTabButton" />
<RadioButton android:id="@id/main_tab_address" android:text="@string/main_contact" android:drawableTop="@drawable/tab_address" style="@style/MMTabButton" />
<RadioButton android:id="@id/main_tab_find_friend" android:text="@string/main_addcontact" android:drawableTop="@drawable/tab_find_frd" style="@style/MMTabButton" />
<RadioButton android:id="@id/main_tab_settings" android:text="@string/main_setting"android:drawableTop="@drawable/tab_settings" style="@style/MMTabButton" /> 
</RadioGroup>
</LinearLayout>
</TabHost>
样式:
<!-- Tab选项标签 -->
<style name="MMTabButton">
<item name="android:textSize">12.0dip</item>
<item name="android:textColor">@color/mm_tab_btn</item>
<item name="android:gravity">center_horizontal</item>
<item name="android:background">@drawable/tab_bg</item>
<item name="android:layout_width">0.0dip</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:layout_marginLeft">0.70000005dip</item>
<item name="android:layout_marginRight">0.70000005dip</item>
<item name="android:button">@null</item>
<item name="android:layout_weight">1.0</item>
</style>
样式中比较重要的两个属性：
android:button="@null"——去掉RadioButton中的Button按钮（只保留文字）
android:drawableTop="@drawable/tab_settings"——在文字上方显示图片