Android TabHos 滑动成效

import android.view.View;
    import android.view.animation.AccelerateInterpolator;
    import android.view.animation.Animation;
    import android.view.animation.TranslateAnimation;
    import android.widget.TabHost;
    import android.widget.TabHost.OnTabChangeListener;

/**
 * A custom OnTabChangeListener that uses the TabHost its related to to fetch information about the current and previous
 * tabs. It uses this information to perform some custom animations that slide the tabs in and out from left and right.
 * 
 * @author Daniel Kvist
 * 
 */
public class AnimatedTabHostListener implements OnTabChangeListener
{

    private static final int ANIMATION_TIME = 240;
    private TabHost tabHost;
    private View previousView;
    private View currentView;
    private int currentTab;

    /**
     * Constructor that takes the TabHost as a parameter and sets previousView to the currentView at instantiation
     * 
     * @param tabHost
     */
    public AnimatedTabHostListener(TabHost tabHost)
    {
        this.tabHost = tabHost;
        this.previousView = tabHost.getCurrentView();
    }

    /**
     * When tabs change we fetch the current view that we are animating to and animate it and the previous view in the
     * appropriate directions.
     */
    @Override
    public void onTabChanged(String tabId)
    {

        currentView = tabHost.getCurrentView();
        if (tabHost.getCurrentTab() > currentTab)
        {
            previousView.setAnimation(outToLeftAnimation());
            currentView.setAnimation(inFromRightAnimation());
        }
        else
        {
            previousView.setAnimation(outToRightAnimation());
            currentView.setAnimation(inFromLeftAnimation());
        }
        previousView = currentView;
        currentTab = tabHost.getCurrentTab();

    }

    /**
     * Custom animation that animates in from right
     * 
     * @return Animation the Animation object
     */
    private Animation inFromRightAnimation()
    {
        Animation inFromRight = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, 1.0f, Animation.RELATIVE_TO_PARENT, 0.0f,
                Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f);
        return setProperties(inFromRight);
    }

    /**
     * Custom animation that animates out to the right
     * 
     * @return Animation the Animation object
     */
    private Animation outToRightAnimation()
    {
        Animation outToRight = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 1.0f,
                Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f);
        return setProperties(outToRight);
    }

    /**
     * Custom animation that animates in from left
     * 
     * @return Animation the Animation object
     */
    private Animation inFromLeftAnimation()
    {
        Animation inFromLeft = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, -1.0f, Animation.RELATIVE_TO_PARENT, 0.0f,
                Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f);
        return setProperties(inFromLeft);
    }

    /**
     * Custom animation that animates out to the left
     * 
     * @return Animation the Animation object
     */
    private Animation outToLeftAnimation()
    {
        Animation outtoLeft = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, -1.0f,
                Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f);
        return setProperties(outtoLeft);
    }

    /**
     * Helper method that sets some common properties
     * @param animation the animation to give common properties
     * @return the animation with common properties
     */
    private Animation setProperties(Animation animation)
    {
        animation.setDuration(ANIMATION_TIME);
        animation.setInterpolator(new AccelerateInterpolator());
        return animation;
    }
}
转载自：http://ask.csdn.net/questions/1122