效果图如下(android虚拟机长宽为800*600)：

（测试版）代码如下：
package com.Snake;
/*
* Author: Wallace Wang
* Email: wallage@qq.com
*/
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.view.GestureDetector.OnGestureListener;
import android.widget.FrameLayout;
import android.widget.ImageView;
public class SnakeLayout extends FrameLayout {
private static final String LOG_TAG = "SnakeLayout";
private GestureDetector mGestureDetector;
private SnakeOnGestureListener mGestureListener;
private List ViewHolder;
private int selectImg;
private int totalViewNum;
private View mContentView;
private SnakeView ScrollView;
private Context mContext;
private enum State {
ABOUT_TO_ANIMATE,
ANIMATING,
ANIMATE_END,
READY,
TRACKING
};
private State mState;
private double aniStartPos;// Value = scrollNum + percent*direction;
private double aniStopPos;// Value = scrollNum + percent*direction;
private Date aniStartTime;
private long aniTime = 1000;
private double aniSpeed = 500;
private double aniDefG = 5;

private int mContentWidth = 0;
private int mContentHeight = 0;
private int clickItem = -1;
private int direction = 0;
private int movDirection = 0;
private double percent = 0;
private int scrollNum = 0;
private PathScale myPathViews;
private List BmpRecViews;
private OnSelectListener selectListener;
private OnClickListener clickListener;
private int currentIndex = 0;
public SnakeLayout(Context context, AttributeSet attrs) {
super(context, attrs);
Log.d(LOG_TAG, "Init Snake Layout");
mContext = context;
TypedArray a = context.obtainStyledAttributes(attrs,
R.styleable.SnakeLayout);
selectImg = a.getInteger(R.styleable.SnakeLayout_selectImg, -1);
a.recycle();
mGestureListener = new SnakeOnGestureListener();
mGestureDetector = new GestureDetector(mGestureListener);
mGestureDetector.setIsLongpressEnabled(false);
BmpRecViews = new ArrayList();
myPathViews = new PathScale();
mState = State.READY;
}
public void Init(){
for (int i = 0; i < totalViewNum; i++) {
ImageView v = (ImageView)ViewHolder.get(i);
v.setScaleType(ImageView.ScaleType.FIT_XY);
v.setImageBitmap(BmpRecViews.get((i + currentIndex)% BmpRecViews.size()));
}
}

public void addBitmap(Bitmap b){
if(b != null)
BmpRecViews.add(b);
}

public void addBitmap(Bitmap b, int position){
if(b != null)
BmpRecViews.add(position, b);
}

public void addRec(int rec){
Bitmap b = BitmapFactory.decodeResource(this.getResources(),rec);
if(b != null)
BmpRecViews.add(b);
}
......
代码太长，省略


res/values/attrs.xml文件：
< xml version="1.0" encoding="utf-8" >