if (childCenter == mCoveflowCenter) {
transformImageBitmap(
(ImageView) child,
t, 0);
} else {
rotationAngle = (int) (((float) (mCoveflowCenter - childCenter) / childWidth) * mMaxRotationAngle);
if (Math.abs(rotationAngle) > mMaxRotationAngle) {
rotationAngle = (rotationAngle < 0) -mMaxRotationAngle
: mMaxRotationAngle;
}
transformImageBitmap(
(ImageView) child,
t, rotationAngle);
}
return true;
}

protected void onSizeChanged(int w,
int h, int oldw, int oldh) {
mCoveflowCenter = getCenterOfCoverflow();
super.onSizeChanged(w, h, oldw,
oldh);
}

private void transformImageBitmap(
ImageView child,
Transformation t,
int rotationAngle) {
mCamera.save();
final Matrix imageMatrix = t
.getMatrix();
final int imageHeight = child
.getLayoutParams().height;
final int imageWidth = child
.getLayoutParams().width;
final int rotation = Math
.abs(rotationAngle);

// 在Z轴上正向移动camera的视角，实际效果为放大图片。
// 如果在Y轴上移动，则图片上下移动；X轴上对应图片左右移动。
mCamera.translate(0.0f, 0.0f,
100.0f);

// As the angle of the view gets less, zoom in
if (rotation < mMaxRotationAngle) {
float zoomAmount = (float) (mMaxZoom + (rotation * 1.5));
mCamera.translate(0.0f,
0.0f, zoomAmount);
}
// 在Y轴上旋转，对应图片竖向向里翻转。
// 如果在X轴上旋转，则对应图片横向向里翻转。
mCamera.rotateY(rotationAngle);
mCamera.getMatrix(imageMatrix);
imageMatrix.preTranslate(
-(imageWidth / 2),
-(imageHeight / 2));
imageMatrix.postTranslate(
(imageWidth / 2),
(imageHeight / 2));
mCamera.restore();
}

//
// private boolean isScrollingLeft(
// MotionEvent e1,
// MotionEvent e2) {
// return e2.getX() > e1.getX();
// }

@Override
public boolean onFling(
MotionEvent e1,
MotionEvent e2,
float velocityX,
float velocityY) {
// int keyCode;
// if (isScrollingLeft(e1, e2)) {
// keyCode = KeyEvent.KEYCODE_DPAD_LEFT;
// } else {
// keyCode = KeyEvent.KEYCODE_DPAD_RIGHT;
// }
// onKeyDown(keyCode, null);
return false;
}

}

-------------------.xml

< xml version="1.0" encoding="utf-8" >
android:id="@+id/widget32"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

android:id="@+id/widget1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:spacing="10dp"
android:unselectedAlpha="0.5" />