ViewFlipper 頁面切換效果

public class MyViewFlipperActivity extends Activity {
    private ViewFlipper vf;
    private float oldX;
    //
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //
        vf = (ViewFlipper) findViewById(R.id.viewFlipper1);
    }
 
    @Override
    public void onClick(View v) {
        vf.showNext();
    }
 
    @Override
    public boolean onTouchEvent(MotionEvent touchevent) {
        // 滑動方式
        switch (touchevent.getAction()) {
            case MotionEvent.ACTION_DOWN:
                oldX = touchevent.getX();
            break;
            case MotionEvent.ACTION_UP:
                float currentX = touchevent.getX();
                if (oldX < currentX) {
                    vf.setInAnimation(inFromLeftAnimation(360));
                    vf.setOutAnimation(outToRightAnimation(360));
                    vf.showNext();
                }
                if (oldX > currentX) {
                    vf.setInAnimation(inFromRightAnimation(360));
                    vf.setOutAnimation(outToLeftAnimation(360));
                    vf.showPrevious();
                }
            break;
        }
        return false;
    }
    // 前一頁
    public Animation inFromRightAnimation(int duration) {
        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);
        inFromRight.setDuration(duration);
        inFromRight.setInterpolator(new AccelerateInterpolator());
        return inFromRight;
    }
    public Animation outToLeftAnimation(int duration) {
        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);
        outtoLeft.setDuration(duration);
        outtoLeft.setInterpolator(new AccelerateInterpolator());
        return outtoLeft;
    }
    // 下一頁
    public Animation inFromLeftAnimation(int duration) {
        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);
        inFromLeft.setDuration(duration);
        inFromLeft.setInterpolator(new AccelerateInterpolator());
        return inFromLeft;
    }
    public Animation outToRightAnimation(int duration) {
        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);
        outtoRight.setDuration(duration);
        outtoRight.setInterpolator(new AccelerateInterpolator());
        return outtoRight;
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello" android:id="@+id/textView1"/>
    <ViewFlipper
        android:id="@+id/viewFlipper1"
        android:layout_width="match_parent"
        android:layout_height="fill_parent" >
        <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        <TextView
            android:layout_height="wrap_content"
            android:id="@+id/panel1"
            android:text="頁面一"
            android:layout_width="fill_parent"
            android:layout_weight="1">
        </TextView>
    </LinearLayout>
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        <TextView
            android:layout_height="wrap_content"
            android:id="@+id/panel2"
            android:text="頁面二"
            android:layout_width="fill_parent"
            android:layout_weight="1" >
        </TextView>
    </LinearLayout>       
    </ViewFlipper>
</LinearLayout>