Android : Android flip animation from top to bottom and contrariwise

i want to create flip animation from top to bottom and contrariwise like with this below screen shot:

my pasted code Flip is left to right and contrariwise, how to change this code to from top to bottom

My code:

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    image1 = (ImageView) findViewById(R.id.ImageView01);
    image2 = (ImageView) findViewById(R.id.ImageView02);
    image2.setVisibility(View.GONE);

    image1.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View view) {
            if (isFirstImage) {
                applyRotation(0, 90);
                isFirstImage = !isFirstImage;

            } else {
                applyRotation(0, -90);
                isFirstImage = !isFirstImage;
            }
        }
    });
}


private void applyRotation(float start, float end) {
    // Find the center of image
    final float centerX = image1.getWidth() / 2.0f;
    final float centerY = image1.getHeight() / 2.0f;

    // Create a new 3D rotation with the supplied parameter
    // The animation listener is used to trigger the next animation
    final Flip3dAnimation rotation = new Flip3dAnimation(start, end, centerX, centerY);
    rotation.setDuration(200);
    rotation.setFillAfter(true);
    rotation.setInterpolator(new AccelerateInterpolator());
    rotation.setAnimationListener(new DisplayNextView(isFirstImage, image1, image2));

    if (isFirstImage)
    {
        image1.startAnimation(rotation);
    } else {
        image2.startAnimation(rotation);
    }

}