public class MainActivity extends TabActivity  {

    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;

    private Animation slideLeftIn;

    private Animation slideLeftOut;

    private Animation slideRightIn;

    private Animation slideRightOut;

    private ViewFlipper viewFlipper;

    private TabWidget tabWidget;

    int currentView = 0;

    private static int maxTabIndex = 2;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        TabHost tabHost = getTabHost();

        tabHost.addTab(tabHost.newTabSpec("tab11").setIndicator("AAA ").setContent(new Intent(this, A.class)));

        tabHost.addTab(tabHost.newTabSpec("tab12").setIndicator("BBB ").setContent(new Intent(this, B.class)));

        tabHost.addTab(tabHost.newTabSpec("tab13").setIndicator("CCC ").setContent(new Intent(this, C.class)));

        tabHost.setCurrentTab(0);

        slideLeftIn = AnimationUtils.loadAnimation(this, R.anim.slide_left_in);

        slideLeftOut = AnimationUtils.loadAnimation(this, R.anim.slide_left_out);

        slideRightIn = AnimationUtils.loadAnimation(this, R.anim.slide_right_in);

        slideRightOut = AnimationUtils.loadAnimation(this,R.anim.slide_right_out);

        gestureDetector = new GestureDetector(new MyGestureDetector());

        gestureListener = new View.OnTouchListener() {

            public boolean onTouch(View v, MotionEvent event) {

                if (gestureDetector.onTouchEvent(event)) {

                    return true;

                }

                return false;

            }

        };

        tabWidget = tabHost.getTabWidget();

        // 注意这个就是改变Tabhost默认样式的地方，一定将这部分代码放在上面这段代码的下面，不然样式改变不了

        for (int i = 0; i < tabWidget.getChildCount(); i++) {

            tabWidget.getChildAt(i).getLayoutParams().height = 70;// 设置选项卡的高度

              tabWidget.getChildAt(i).getLayoutParams().width = 40;// 设置选项卡的宽度

              TextView tv = (TextView) tabWidget.getChildAt(i).findViewById(android.R.id.title);

            tv.setTextSize(15);

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

        }

    }

    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);

    }

}

<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" >

    <LinearLayout

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

        android:orientation="vertical" >

        <FrameLayout

            android:id="@android:id/tabcontent"

            android:layout_width="fill_parent"

            android:layout_height="1dip"

            android:layout_weight="1" />

        <TabWidget

            android:id="@android:id/tabs"

            android:layout_width="fill_parent"

            android:layout_height="wrap_content"

            android:paddingLeft="1dip"

            android:paddingRight="1dip"

            android:paddingTop="4dip" />

    </LinearLayout>

</TabHost>

<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate android:toXDelta="0"

        android:duration="800"

        android:fromXDelta="100%p" />

   </set>

<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate

        android:duration="800"

        android:fromXDelta="0"

        android:toXDelta="-100%p" />

</set>

<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate

        android:duration="800"

        android:fromXDelta="-100%p"

        android:toXDelta="0" />

</set>

<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate android:fromXDelta="0"

        android:toXDelta="100%p" android:duration="800"/>

</set>