效果：
[img]http://dl.iteye.com/upload/picture/pic/117211/6429528d-4d2d-30a3-b7ba-42c3f71164cd.png[/img]
[img]http://dl.iteye.com/upload/picture/pic/117215/4089e356-3cd5-3d1a-9b80-1f8cf840a043.png[/img]
[img]http://dl.iteye.com/upload/picture/pic/117213/a271a99e-aa0a-398b-86bd-2129c4e1f479.png[/img]
代码：

import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.*;
import android.widget.TabHost.OnTabChangeListener;
import android.os.Build;
import android.view.View;
import java.lang.reflect.Field;
import android.view.LayoutInflater;

public class testTabActivity extends TabActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

int width =45;
int height =48;

final TabHost tabs = getTabHost();
final TabWidget tabWidget = tabs.getTabWidget();

Field mBottomLeftStrip;
Field mBottomRightStrip;

LayoutInflater.from(this).inflate(R.layout.tab_views, tabs.getTabContentView(), true);

tabs.addTab(tabs.newTabSpec("first tab")
.setIndicator("信息",getResources().getDrawable(R.drawable.m))
.setContent(new Intent(testTabActivity.this,OneActivty.class))
);

tabs.addTab(tabs.newTabSpec("second tab")
.setIndicator("收藏",getResources().getDrawable(R.drawable.n))
.setContent(R.id.content));

tabs.addTab(tabs.newTabSpec("second tab")
.setIndicator("设置",getResources().getDrawable(R.drawable.s))
.setContent(R.id.content));



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 {MOD}，不然默认为黑 {MOD}
*/
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 {MOD}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 (R.drawable.no));
mBottomRightStrip.set(tabWidget, getResources().getDrawable (R.drawable.no));

} catch (Exception e) {
e.printStackTrace();
}
} else {
/**
* 不做任何处理
*/
}
View vvv = tabWidget.getChildAt(i);
if(tabs.getCurrentTab()==i){
vvv.setBackgroundDrawable(getResources().getDrawable(R.drawable.tab_button));
}
else {
vvv.setBackgroundDrawable(getResources().getDrawable(R.drawable.bar));
}

}
/**
* 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(R.drawable.tab_button));
}
else {
vvv.setBackgroundDrawable(getResources().getDrawable(R.drawable.bar));
}
}
}});

}


}