实现了tab的点击和滑动的操作，对于每次的都是启动一个activity。效果比较好看，需要的同学可以看下。

package com.and.netease;import com.and.netease.utils.MoveBg;
import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TabHost;public class MainActivity extends TabActivity {TabHost tabHost;TabHost.TabSpec tabSpec;RadioGroup radioGroup;RelativeLayout bottom_layout;ImageView img;int startLeft;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);bottom_layout = (RelativeLayout) findViewById(R.id.layout_bottom);tabHost = getTabHost();tabHost.addTab(tabHost.newTabSpec("news").setIndicator("News").setContent(new Intent(this, TabNewsActivity.class)));tabHost.addTab(tabHost.newTabSpec("topic").setIndicator("Topic").setContent(new Intent(this, TabTopicActivity.class)));tabHost.addTab(tabHost.newTabSpec("picture").setIndicator("Picture").setContent(new Intent(this, TabPicActivity.class)));tabHost.addTab(tabHost.newTabSpec("follow").setIndicator("Follow").setContent(new Intent(this, TabFollowActivity.class)));tabHost.addTab(tabHost.newTabSpec("vote").setIndicator("Vote").setContent(new Intent(this, TabVoteActivity.class)));radioGroup = (RadioGroup) findViewById(R.id.radiogroup);radioGroup.setOnCheckedChangeListener(checkedChangeListener);img = new ImageView(this);img.setImageResource(R.drawable.tab_front_bg);bottom_layout.addView(img);}private OnCheckedChangeListener checkedChangeListener = new OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(RadioGroup group, int checkedId) {switch (checkedId) {case R.id.radio_news:tabHost.setCurrentTabByTag("news");
//                moveFrontBg(img, startLeft, 0, 0, 0);MoveBg.moveFrontBg(img, startLeft, 0, 0, 0);startLeft = 0;break;case R.id.radio_topic:tabHost.setCurrentTabByTag("topic");MoveBg.moveFrontBg(img, startLeft, img.getWidth(), 0, 0);startLeft = img.getWidth();break;case R.id.radio_pic:tabHost.setCurrentTabByTag("picture");MoveBg.moveFrontBg(img, startLeft, img.getWidth() * 2, 0, 0);startLeft = img.getWidth() * 2;break;case R.id.radio_follow:tabHost.setCurrentTabByTag("follow");MoveBg.moveFrontBg(img, startLeft, img.getWidth() * 3, 0, 0);startLeft = img.getWidth() * 3;break;case R.id.radio_vote:tabHost.setCurrentTabByTag("vote");MoveBg.moveFrontBg(img, startLeft, img.getWidth() * 4, 0, 0);startLeft = img.getWidth() * 4;break;default:break;}}};
}