根据手势滑动切换Activity，使用TabSpec 和TabHost - grandsun/myNote GitHub Wiki

import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;

public class ActivityMain extends TabActivity {
private TabSpec tabSpec;
private TabHost tabHost;
private Intent intent;
private static final int SWIPE_MIN_DISTANCE = 120;
private static final int SWIPE_MAX_OFF_PATH = 250;
private static final int SWIPE_THRESHOLD_VELOCITY = 200;
private GestureDetector gestureDetector;
View.OnTouchListener gestureListener;

int currentView = 0;  
private static int maxTabIndex = 2;  

@Override  
public void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);  
    super.setContentView(R.layout.activity_main);  
    UtilVar.activities.add(ActivityMain.this);  
    this.initTableHost();  

    gestureDetector = new GestureDetector(new MyGestureDetector());  
    gestureListener = new View.OnTouchListener() {  
        public boolean onTouch(View v, MotionEvent event) {  
            if (gestureDetector.onTouchEvent(event)) {  
                return true;  
            }  
            return false;  
        }  
    };  

}  

/** 
 * tablehost的初始化，代码完成 
 */  
private void initTableHost() {  
    tabHost = super.getTabHost();  
    // 歌曲列表  
    intent = new Intent(ActivityMain.this, ActivityList.class);  
    tabSpec = tabHost  
            .newTabSpec("歌曲列表")  
            .setIndicator("歌曲列表",  
                    getResources().getDrawable(R.drawable.ic_launcher))  
            .setContent(intent);  
    tabHost.addTab(tabSpec);  
    // 正在播放  
    intent = new Intent(ActivityMain.this, ActivityPlaying.class);  
    tabSpec = tabHost  
            .newTabSpec("正在播放")  
            .setIndicator("正在播放",  
                    getResources().getDrawable(R.drawable.ic_launcher))  
            .setContent(intent);  
    tabHost.addTab(tabSpec);  
    // 专辑列表  
    intent = new Intent(ActivityMain.this, ActivityLyric.class);  
    tabSpec = tabHost  
            .newTabSpec("歌词显示")  
            .setIndicator("歌词显示",  
                    getResources().getDrawable(R.drawable.ic_launcher))  
            .setContent(intent);  
    tabHost.addTab(tabSpec);  
    // 设置当前tab  
    tabHost.setCurrentTab(1);  
}  

// 左右滑动刚好页面也有滑动效果  
class MyGestureDetector extends SimpleOnGestureListener {  
    @Override  
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,  
            float velocityY) {  
        TabHost tabHost = getTabHost();  
        try {  
            if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)  
                return false;  
            // right to left swipe  
            if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE  
                    && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {  
                Log.i("test", "right");  
                if (currentView == maxTabIndex) {  
                    currentView = 0;  
                } else {  
                    currentView++;  
                }  
                tabHost.setCurrentTab(currentView);  
            } else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE  
                    && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {  
                Log.i("test", "left");  
                if (currentView == 0) {  
                    currentView = maxTabIndex;  
                } else {  
                    currentView--;  
                }  
                tabHost.setCurrentTab(currentView);  
            }  
        } catch (Exception e) {  
        }  
        return false;  
    }  
}  

@Override  
public boolean dispatchTouchEvent(MotionEvent event) {  
    if (gestureDetector.onTouchEvent(event)) {  
        event.setAction(MotionEvent.ACTION_CANCEL);  
    }  
    return super.dispatchTouchEvent(event);  
}  

@Override  
public boolean onCreateOptionsMenu(Menu menu) {  
    getMenuInflater().inflate(R.menu.activity_main, menu);  
    return true;  
}  

}