tabhost放置下边

正常在使用tabhost的时候都会发觉默认布局在下方显示。在需求遇到在下方显示的时候则需要自己去重写方法；

完成效果图：

实现步骤：

1 设置按键效果的背景显示：

home_btn_bg.xml文件代码：

<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/home_btn_bg_n" android:state_enabled="true" android:state_focused="true" android:state_pressed="false"/>
    <item android:drawable="@drawable/home_btn_bg_s" android:state_enabled="true" android:state_pressed="true" />
    <item android:drawable="@drawable/home_btn_bg_d" android:state_enabled="true" android:state_checked="true" />


</selector>

其中主要设置点击效果对应的显示背景

2 设置styles.xml文件代码如下：

<resources>
    <style name="AppBaseTheme" parent="android:Theme.Light">
    </style>
    <style name="AppTheme" parent="AppBaseTheme">
    </style>

  <style name="main_tab_bottom">
    <item name="android:textSize">10.0dip</item>
    <item name="android:textColor">#ffffffff</item>
    <item name="android:ellipsize">marquee</item>
    <item name="android:gravity">center_horizontal</item>
    <item name="android:background">@drawable/home_btn_bg</item>
    <item name="android:paddingTop">5.0dip</item>
    <item name="android:layout_width">fill_parent</item>
    <item name="android:layout_height">wrap_content</item>
    <item name="android:singleLine">true</item>
    <item name="android:drawablePadding">2.0dip</item>
    <item name="android:layout_weight">1.0</item>
  </style>
</resources>

这种布局主要用于显示模拟的tabhost的具体每一个tabhost选项卡的显示效果，style名为mian_tab_bottom

3 设置布局文件activity_main.xml文件代码如下：

<?xml version="1.0" encoding="utf-8"?>
<TabHost 
    xmlns:android="http://schemas.android.com/apk/res/android"
	android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#FFFFFF">
       
    <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:layout_width="fill_parent"
    		android:layout_height="wrap_content"
    		android:layout_weight="0.0"
    		android:visibility="gone"/>
    	<RadioGroup
    		android:id="@+id/main_tab"
            android:orientation="horizontal"
    		android:layout_width="fill_parent"
    		android:layout_height="wrap_content"
    		android:background="#87CEEB"
    		android:gravity="center_vertical"
    		android:layout_gravity="bottom">
    		<RadioButton 
    			android:layout_marginTop="0.5dip"
    			android:text="医疗集团"
    			android:textColor="#000000"
    			android:drawableTop="@drawable/ic_launcher"
    			android:id="@+id/radio_button0"
    			style="@style/main_tab_bottom"/>
    		<RadioButton 
    			android:layout_marginTop="0.5dip"
    			android:text="康复集团"
    			android:drawableTop="@drawable/ic_launcher"
    			android:textColor="#000000"
    			android:id="@+id/radio_button1"
    			style="@style/main_tab_bottom"/>

    	</RadioGroup>
    </LinearLayout>
</TabHost>

每个tabhost选项卡具体可在这里显示：包括文字和图片；

4 java文件MainActivity.java代码如下：

package com.example.android;






import android.app.TabActivity;
import android.content.Intent;

import android.view.Window;
import android.os.Bundle;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.TabHost;
import android.widget.RadioButton;

public class MainActivity extends TabActivity implements
OnCheckedChangeListener {

private TabHost mHost;
private Intent first;
private Intent second;
RadioButton firstTabHost;
RadioButton secondTabHose;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);

// ~~~~~~~~~~~~ 初始化
this.first = new Intent(this, First.class);
this.second = new Intent(this, Second.class);

initRadios();
setupIntent();
}

/**
* 初始化底部按钮
*/
private void initRadios() {
 ((RadioButton) findViewById(R.id.radio_button0)).setOnCheckedChangeListener(this);
 ((RadioButton) findViewById(R.id.radio_button1)).setOnCheckedChangeListener(this);

}


private void setupIntent() {
this.mHost = getTabHost();
TabHost localTabHost = this.mHost;


localTabHost.addTab(
		buildTabSpec("first_tab", "kangfu",
        R.drawable.jianbi5, this.first));

localTabHost.addTab(buildTabSpec("second_tab", "nihao",
        R.drawable.jianbi5, this.second));

}

/**
* 切换模块
*/
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
    switch (buttonView.getId()) {
    case R.id.radio_button0:
        this.mHost.setCurrentTabByTag("first_tab");
        break;
    case R.id.radio_button1:
        this.mHost.setCurrentTabByTag("second_tab");
        break;
     }
 }
}


private TabHost.TabSpec buildTabSpec(String tag, String resLabel, int resIcon,
    final Intent content) {
return this.mHost
        .newTabSpec(tag)
        .setIndicator(resLabel,getResources().getDrawable(resIcon))
        .setContent(content);
 }
}

资源下载   http://download.youkuaiyun.com/detail/fengerfhf/5834491