[Android]TAB放置界面底部

废话不多说，直接上源码了。

package com.TabTest2;
import java.lang.reflect.Field;
import android.app.Activity;
import android.os.Build;
import android.R;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TabHost;
import android.widget.TabWidget;
import android.widget.TextView;
import android.widget.TabHost.OnTabChangeListener;

public class TabTest2 extends Activity {
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(com.TabTest2.R.layout.main);
        final TabHost tabs=(TabHost)findViewById(com.TabTest2.R.id.tabhost);
        final TabWidget tabWidget=(TabWidget) findViewById(R.id.tabs);
        int width =45;
        int height =48;
        Field mBottomLeftStrip;
        Field mBottomRightStrip;
        tabs.setup();
           
          
           
        tabs.addTab(tabs.newTabSpec("first tab")
                .setIndicator("news",getResources().getDrawable(com.TabTest2.R.drawable.c))
                .setContent(com.TabTest2.R.id.tab1));
        tabs.addTab(tabs.newTabSpec("second tab")
                .setIndicator("help",getResources().getDrawable(com.TabTest2.R.drawable.e))
                .setContent(com.TabTest2.R.id.tab2));
        tabs.addTab(tabs.newTabSpec("third tab")
                .setIndicator("setting",getResources().getDrawable(com.TabTest2.R.drawable.efg))
                .setContent(com.TabTest2.R.id.tab2));
           
        tabs.setCurrentTab(0);
        
        
        for (int i =0; i <tabWidget.getChildCount(); i++) {
            /**
             * 设置高度、宽度，不过宽度由于设置为fill_parent，在此对它没效果
             */
            tabWidget.getChildAt(i).getLayoutParams().height = height;
            tabWidget.getChildAt(i).getLayoutParams().width = width;


         /**
          * 设置tab中标题文字的颜色，不然默认为黑色
          */
          final TextView tv = (TextView) tabWidget.getChildAt(i).findViewById(android.R.id.title);

          tv.setTextColor(this.getResources().getColorStateList(android.R.color.white));




            /**
             * 此方法是为了去掉系统默认的色白的底角
             *
             * 在 TabWidget中mBottomLeftStrip、mBottomRightStrip
             * 都是私有变量，但是我们可以通过反射来获取
             *
             * 由于还不知道Android 2.2的接口是怎么样的，现在先加个判断好一些
             */
      if (Float.valueOf(Build.VERSION.RELEASE) <= 2.1) {
               try {
                  mBottomLeftStrip = tabWidget.getClass().getDeclaredField ("mBottomLeftStrip");
                  mBottomRightStrip = tabWidget.getClass().getDeclaredField ("mBottomRightStrip");
                  if(!mBottomLeftStrip.isAccessible()) {
                    mBottomLeftStrip.setAccessible(true);
                  }
                  if(!mBottomRightStrip.isAccessible()){
                    mBottomRightStrip.setAccessible(true);
                  }
                 mBottomLeftStrip.set(tabWidget, getResources().getDrawable (com.TabTest2.R.drawable.linee));
                 mBottomRightStrip.set(tabWidget, getResources().getDrawable (com.TabTest2.R.drawable.linee));

               } catch (Exception e) {
                 e.printStackTrace();
               }
         } else {
        
         }
        View vvv = tabWidget.getChildAt(i);
  if(tabs.getCurrentTab()==i){
          vvv.setBackgroundDrawable(getResources().getDrawable(com.TabTest2.R.drawable.shine));
  }
  else {
          vvv.setBackgroundDrawable(getResources().getDrawable(com.TabTest2.R.drawable.seven));
  }

        }
        
        /**
         * 当点击tab选项卡的时候，更改当前的背景
         */
        tabs.setOnTabChangedListener(new OnTabChangeListener(){
   @Override
   public void onTabChanged(String tabId) {
    // TODO Auto-generated method stub

    for (int i =0; i < tabWidget.getChildCount(); i++) {
     View vvv = tabWidget.getChildAt(i);
     if(tabs.getCurrentTab()==i){
             vvv.setBackgroundDrawable(getResources().getDrawable(com.TabTest2.R.drawable.shine));
     }
     else {
             vvv.setBackgroundDrawable(getResources().getDrawable(com.TabTest2.R.drawable.seven));
     }
    }
   }});

        
    }


}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android=""
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <TabHost
        android:id="@+id/tabhost"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:paddingBottom="62px">
            <AnalogClock
                android:id="@+id/tab1"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:layout_centerHorizontal="true" />
            <Button
                android:id="@+id/tab2"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:text="A semi-random button" />
        </FrameLayout>
        <RelativeLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent">
            <TabWidget
                android:id="@android:id/tabs"
                android:layout_alignParentBottom="true"
                android:layout_width="fill_parent"
                android:layout_height="60px" />
        </RelativeLayout>
    </TabHost>
</LinearLayout>

效果如下：