Android仿开心消消乐大树星星无限循环效果

/**
 * Created by liuml on 2016/6/11.
 */

public class MyScrollView extends View {
 // 其资源引用的是同一张图片
 private Bitmap bmpBackGround1;
 private Bitmap bmpBackGround2;
 int speed;
 int pointX;
 int tempy1;
 private Context mcontext;

 private int isfirst = 1;
 // 按钮的坐标
 private int btnX, btnY;
 // 按钮是否按下标识位
 private Boolean isPress;
 // 界面背景坐标
 private int bg1x, bg1y, bg2x, bg2y;
 private int cloudx, cloudy;

 List> mapList;

 // 星星坐标
 private int stars0X, stars0Y, stars1X, stars1Y, stars2X, stars2Y, stars3X,
 stars3Y, stars4X, stars4Y, stars5X, stars5Y, stars6X, stars6Y,
 stars7X, stars7Y, stars8X, stars8Y, stars9X, stars9Y, stars10X,
 stars10Y;
 // //定义第二页的星星坐标
 private int MaxStars = 80;// 最大的星星数量 80个
 private int textContnt[] = new int[MaxStars];// 数字

 private int pointsY[];
 private int pointsX[];

 private int pointY, moveY = 0;

 private int activityNumber = 2;
 private Bitmap treeBackGround;// 界面背景
 private Bitmap cloud_bg;// 界面背景
 private Bitmap starsBg;// 星星
 private Bitmap starsBg_n;// 星星未做的
 // 声明一个Resources实例便于加载图片
 private Resources res = this.getResources();
 // 声明一个画笔
 private Paint paint;
 private DisplayMetrics dm; // 获取屏幕分辨率的类
 // private Scroller mScroller;
 private boolean isFirst = true;
 // 点击事件星星相关
 int mDownX = 0;
 int mDownY = 0;
 int mTempX = 0;
 int mTempY = 0;
 private static final int MAX_DISTANCE_FOR_CLICK = 100;

 private ScrollViewListener listener;

 private int screenHeight;
 private int screenWidth;

 public MyScrollView(Context context, AttributeSet attrs) {
 super(context, attrs);
 mcontext = context;
 // 背景加载资源
 treeBackGround = BitmapFactory.decodeResource(res, R.drawable.tree);
 cloud_bg = BitmapFactory.decodeResource(res, R.drawable.cloud_bg);
 starsBg = BitmapFactory.decodeResource(res, R.drawable.stars_big);
 starsBg_n = BitmapFactory.decodeResource(res, R.drawable.startbg_n);
 this.bmpBackGround1 = treeBackGround;
 this.bmpBackGround2 = treeBackGround;
 bg1x = 0;
 bg2x = 0;
 cloudx = 0;
 pointsY = new int[22];// Y轴
 pointsX = new int[22];// X轴
 screenHeight = DisplayUtils.getScreenHeight(context);
 screenWidth = DisplayUtils.getScreenWidth(context);
 initStartsXY();
 initTextContent();
 // mScroller = new Scroller(context);
 // LogUtils.d("屏幕 分别率 高 = " + DisplayUtils.getScreenHeight(context) +
 // " 屏幕 分别率 宽度 = " + DisplayUtils.getScreenWidth(context));
 // LogUtils.d("屏幕 分别率 getDisplayDensity = " +
 // DisplayUtils.getDisplayDensity(context));

 }

 public void setMapList(List list) {
 mapList = list;
 }

 // //调用此方法滚动到目标位置
 // public void smoothScrollTo(int fx, int fy) {
 // int dx = fx - mScroller.getFinalX();
 // int dy = fy - mScroller.getFinalY();
 // smoothScrollBy(dx, dy);
 // }
 //
 // //调用此方法设置滚动的相对偏移
 // public void smoothScrollBy(int dx, int dy) {
 //
 // //设置mScroller的滚动偏移量
 // mScroller.startScroll(mScroller.getFinalX(), mScroller.getFinalY(), dx,
 // dy);
 // invalidate();//这里必须调用invalidate()才能保证computeScroll()会被调用，否则不一定会刷新界面，看不到滚动效果
 // }
 //
 // @Override
 // public void computeScroll() {
 // //先判断mScroller滚动是否完成
 // if (mScroller.computeScrollOffset()) {
 //
 // //这里调用View的scrollTo()完成实际的滚动
 // scrollTo(mScroller.getCurrX(), mScroller.getCurrY());
 //
 // //必须调用该方法，否则不一定能看到滚动效果
 // postInvalidate();
 // }
 // super.computeScroll();
 // }

 private void initTextContent() {
 for (int i = 0; i < MaxStars; i++) {
 textContnt[i] = i + 1;
 }
 }

 public void setOnclick(ScrollViewListener listener) {
 this.listener = listener;
 }

 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 super.onMeasure(widthMeasureSpec, heightMeasureSpec);

 // 首先让第一张背景底部正好填满整个屏幕
 int treeHeight = bmpBackGround1.getHeight() - getHeight();
 // LogUtils.d("bg1y = " + bg1y + " bmpBackGround1.getHeight() = " +
 // bmpBackGround1.getHeight()
 // + " getHeight() = " + getHeight());
 if (treeHeight > 0) {// 图高大于屏幕高度

 // 第二张背景图紧接在第一张背景的上方
 // 虽然两张背景图无缝隙连接但是因为图片资源头尾
 // 直接连接不和谐，为了让视觉看不出是两张图连接而修正的位置
 bg1y = -(bmpBackGround1.getHeight() - getHeight());
 bg2y = bg1y - bmpBackGround1.getHeight();// 这里可以+100
    // 可以控制两张图之间的距离修正位置

 } else {
 bg1y = Math.abs(bmpBackGround1.getHeight() - getHeight());
 bg2y = bg1y - bmpBackGround1.getHeight();// 这里可以+100
    // 可以控制两张图之间的距离修正位置
 }

 // LogUtils.d("cloudy = " + cloudy + " bg1y = " + bg1y + " bg2y = " +
 // bg2y + " screenH = " + getHeight());

 // 实例一个画笔
 paint = new Paint();
 paint.setAntiAlias(true);// 设置没有锯齿
 // 设置画笔颜色为白色
 paint.setColor(Color.WHITE);
 }

 @Override
 protected void onDraw(Canvas canvas) {

 // LogUtils.d("屏幕 分别率 h = " + getHeight());
 // LogUtils.d("屏幕 分别率 w = " + getWidth());
 // 画云背景
 canvas.drawBitmap(resizeBitmap(cloud_bg, getWidth(), getHeight()),
 cloudx, cloudy, paint);
 // drawImage(canvas, cloud_bg, cloudx, cloudy, cloud_bg.getWidth(),
 // cloud_bg.getHeight(), cloudx, cloudy, paint);
 // 绘制两张背景
 if (isFirst) {
 bmpBackGround1 = resizeBitmap(bmpBackGround1, getWidth(),
  getHeight());
 isFirst = false;
 initBgView();

 }
 canvas.drawBitmap(bmpBackGround1, bg1x, bg1y, paint);
 canvas.drawBitmap(bmpBackGround1, bg2x, bg2y, paint);
 // LogUtils.d("bmpBackGround1.getHeight() = " +
 // bmpBackGround1.getHeight() + " screenH = " + getHeight() +
 // " bg1y = " + bg1y);
 // LogUtils.d("bg1x = " + bg1x + " bg1y = " + bg1y + " bg2x = " + bg2x
 // + " bg2y = " + bg2y + " screenH = " + getHeight());

 starsDraw(canvas);// 绘制星星
 TextViewDraw(canvas);// 绘制文本
 super.onDraw(canvas);

 }

 @Override
 protected void onScrollChanged(int l, int t, int oldl, int oldt) {

 boolean isDown;
 // speed = t - oldt;
 //
 // //判断向上移动还是向下移动
 // if (speed > 0) {
 // isDown = true;
 // } else {
 // isDown = false;
 // }
 // logic(isDown);//计算点的距离

 super.onScrollChanged(l, t, oldl, oldt);
 }

 public Bitmap resizeBitmap(Bitmap bitmap, int w, int h) {
 if (bitmap != null) {
 int width = bitmap.getWidth();
 int height = bitmap.getHeight();
 int newWidth = w;
 int newHeight = h;
 float scaleWight = ((float) newWidth) / width;
 float scaleHeight = ((float) newHeight) / height;
 Matrix matrix = new Matrix();
 matrix.postScale(scaleWight, scaleHeight);

 Bitmap res = Bitmap.createBitmap(bitmap, 0, 0, width, height,
  matrix, true);// oom问题 待解决
 return res;
 } else {
 return null;
 }
 }

 // 画文字
 private void TextViewDraw(Canvas canvas) {
 // 判断当前画的是第几个
 int c = activityNumber * 11;
 int k = 0;
 if (activityNumber > 2) {

 k = c - ((activityNumber - 1) * 10);
 }

 // LogUtils.d("比例 x 28 = " + (double) 28 / screenWidth);
 // LogUtils.d("比例 y 65 = " + (double) 65 / screenHeight);
 // LogUtils.d("比例 x 40 = " + (double) 40 / screenWidth);
 for (int i = 0; i < 22; i++) {

 paint.setTextSize((int) (0.037037037037037035 * screenWidth));// 设置字体大小
 // paint.setTypeface(typeface);//设置字体类型
 // Typeface.DEFAULT：默认字体。
 // Typeface.DEFAULT_BOLD：加粗字体。
 // Typeface.MONOSPACE：monospace字体。
 // Typeface.SANS_SERIF：sans字体。
 // Typeface.SERIF：serif字体。
 paint.setColor(Color.BLUE);
 // 每页第几个 我推算出来的公式 (x-1)*11+i 这是普通的推算 具体问题 需要具体改变
 // setTextColorUseReflection(Color.BLUE);
 paint.setStrokeWidth(2); // 描边宽度
 paint.setFakeBoldText(true); // 外层text采用粗体
 if (activityNumber <= 2) {
 if (textContnt[i] > 9) {

  paint.setColor(res.getColor(R.color.text_color));
  canvas.drawText(
  String.valueOf(textContnt[i]),
  pointsX[i]
   + (int) (0.025925925925925925 * screenWidth),
  pointsY[i]
   + (int) (0.033854166666666664 * screenHeight),
  paint);
 } else {

  paint.setColor(res.getColor(R.color.text_color));
  canvas.drawText(
  String.valueOf(textContnt[i]),
  pointsX[i]
   + (int) (0.037037037037037035 * screenWidth),
  pointsY[i]
   + (int) (0.033854166666666664 * screenHeight),
  paint);
 }

 } else {
 // 下面的都是从在这里做操作对text 数值
 // int u = (activityNumber - 2) * 11 + i-11;
 // 必须分前后 前面的 是一队 后面的是一队
 if (activityNumber % 2 != 0) {// 第三个开始 奇数 是第二个页面在下面 第一个页面在上
   // 判断上下的 作用
  int befo;// (n-1)*11+i
  int after;
  if (i < 11) {// 数组前面的
  befo = (activityNumber - 1) * 11 + i;
  if (befo < MaxStars) {
  if (textContnt[befo] > 9) {
  paint.setColor(res.getColor(R.color.text_color));
  canvas.drawText(
   String.valueOf(textContnt[befo]),
   pointsX[i]
   + (int) (0.025925925925925925 * screenWidth),
   pointsY[i]
   + (int) (0.033854166666666664 * screenHeight),
   paint);
  } else {
  paint.setColor(res.getColor(R.color.text_color));
  canvas.drawText(
   String.valueOf(textContnt[befo]),
   pointsX[i]
   + (int) (0.037037037037037035 * screenWidth),
   pointsY[i]
   + (int) (0.033854166666666664 * screenHeight),
   paint);
  }
  }
  } else {// 数组后面的
  after = (activityNumber - 3) * 11 + i;
  if (after < MaxStars) {
  if (textContnt[after] > 9) {
  paint.setColor(res.getColor(R.color.text_color));
  canvas.drawText(
   String.valueOf(textContnt[after]),
   pointsX[i]
   + (int) (0.025925925925925925 * screenWidth),
   pointsY[i]
   + (int) (0.033854166666666664 * screenHeight),
   paint);
  } else {

  paint.setColor(res.getColor(R.color.text_color));
  canvas.drawText(
   String.valueOf(textContnt[after]),
   pointsX[i]
   + (int) (0.037037037037037035 * screenWidth),
   pointsY[i]
   + (int) (0.033854166666666664 * screenHeight),
   paint);
  }
  }
  }
 } else {
  int befo;// (n-1)*11+i
  int after;
  if (i < 11) {// 数组前面的
  befo = (activityNumber - 2) * 11 + i;
  if (befo < MaxStars) {
  if (textContnt[befo] > 9) {
  paint.setColor(res.getColor(R.color.text_color));
  canvas.drawText(
   String.valueOf(textContnt[befo]),
   pointsX[i]
   + (int) (0.025925925925925925 * screenWidth),
   pointsY[i]
   + (int) (0.033854166666666664 * screenHeight),
   paint);
  } else {

  paint.setColor(res.getColor(R.color.text_color));
  canvas.drawText(
   String.valueOf(textContnt[befo]),
   pointsX[i]
   + (int) (0.037037037037037035 * screenWidth),
   pointsY[i]
   + (int) (0.033854166666666664 * screenHeight),
   paint);
  }
  }

  } else {// 数组后面的
  after = (activityNumber - 2) * 11 + i;
  if (after < MaxStars) {
  if (textContnt[after] > 9) {
  paint.setColor(res.getColor(R.color.text_color));
  canvas.drawText(
   String.valueOf(textContnt[after]),
   pointsX[i]
   + (int) (0.025925925925925925 * screenWidth),
   pointsY[i]
   + (int) (0.033854166666666664 * screenHeight),
   paint);
  } else {
  paint.setColor(res.getColor(R.color.text_color));
  canvas.drawText(
   String.valueOf(textContnt[after]),
   pointsX[i]
   + (int) (0.037037037037037035 * screenWidth),
   pointsY[i]
   + (int) (0.033854166666666664 * screenHeight),
   paint);
  }
  }
  }
 }

 }

 // LogUtils.d("pointsY [" + i + "]= " + pointsY[i]);
 }
 paint.setColor(Color.WHITE);
 }

 // 获取当前页数的开始数量
 private int getCurrent(int i) {
 int befo;
 // 判断上下
 if (activityNumber % 2 != 0) {// 奇数 第一页在上 第二页在下
 befo = (activityNumber - 1) * 11 + i;
 // LogUtils.d("befo = " + befo + " activityNumber = " +
 // activityNumber + " i = " + i);
 } else {
 befo = (activityNumber - 2) * 11 + i;
 }

 return befo;
 }

 // 获取点击的位置的数字
 private int getOnclickNo(int i) {
 int befo;// (n-1)*11+i
 int after;
 // 判断上下
 if (activityNumber % 2 != 0) {// 奇数 第一页在上 第二页在下
 if (i < 11) {
 befo = (activityNumber - 1) * 11 + i;
 // LogUtils.d("i 小于11 befo = " + befo + " activityNumber = "
 // + activityNumber + " i = " + i);
 } else {
 befo = (activityNumber - 3) * 11 + i;
 // LogUtils.d("i 大于11 befo = " + befo + " activityNumber = "
 // + activityNumber + " i = " + i);
 }
 } else {
 if (i < 11) {
 befo = (activityNumber - 2) * 11 + i;
 // LogUtils.d(" 偶数的时候 befo = " + befo + " activityNumber = "
 // + activityNumber + " i = " + i);
 } else {
 befo = (activityNumber - 2) * 11 + i;

 }
 }

 return befo;
 }

 private void starsDraw(Canvas canvas) {

 // 判断画一页当中 最多的星星 是多少
 int starsMax = (activityNumber) * 11;
 int page;

 if (starsMax > MaxStars) {// 判断当前的最多的星星是否大于定好的星星数量
 if (mapList == null) {
 for (int i = 0; i < 22; i++) {
  // 判断当前画的是第几个
  page = getCurrent(i);
  // LogUtils.d("当前画的是第几个 = " + page);
  canvas.drawBitmap(starsBg_n, pointsX[i], pointsY[i], paint);
 }
 } else {
 for (int i = 0; i < 22; i++) {
  // 判断当前画的是第几个
  page = getCurrent(i);
  // LogUtils.d("当前的 最前面的是多少 current = " + page);

  if (page < MaxStars) {
  if (page < i) {
  Map stringObjectMap = mapList
   .get(page);
  String type = (String) stringObjectMap.get("type");
  if (type.equals("1")) {
  canvas.drawBitmap(starsBg, pointsX[i],
   pointsY[i], paint);
  } else {
  canvas.drawBitmap(starsBg_n, pointsX[i],
   pointsY[i], paint);
  }
  } else {
  canvas.drawBitmap(starsBg_n, pointsX[i],
   pointsY[i], paint);
  }
  }
  // LogUtils.d("pointsY [" + i + "]= " + pointsY[i]);
 }
 }

 } else {
 if (mapList == null) {
 for (int i = 0; i < 22; i++) {
  // 判断当前画的是第几个
  page = getCurrent(i);
  // LogUtils.d("当前画的是第几个 = " + page);
  canvas.drawBitmap(starsBg_n, pointsX[i], pointsY[i], paint);
 }
 } else {
 int size = mapList.size();
 for (int i = 0; i < 22; i++) {
  // 判断当前画的是第几个
  page = getCurrent(i);
  // LogUtils.d("当前画的是第几个 = " + page);
  if (page < size) {
  Map stringObjectMap = mapList.get(page);
  String type = (String) stringObjectMap.get("type");
  if (type.equals("1")) {
  canvas.drawBitmap(starsBg, pointsX[i], pointsY[i],
   paint);
  } else {
  canvas.drawBitmap(starsBg_n, pointsX[i],
   pointsY[i], paint);
  }
  } else {
  canvas.drawBitmap(starsBg_n, pointsX[i], pointsY[i],
  paint);
  }
 }
 }

 }

 }

 private void canvasStats() {

 }

 private void initStartsXY() {

 stars0X = 340;//
 stars0Y = 1180;//
 stars1X = 280;
 stars1Y = 1065;
 stars2X = 500;
 stars2Y = 967;
 stars3X = 240;
 stars3Y = 842;
 stars4X = 400;
 stars4Y = 761;
 stars5X = 540;
 stars5Y = 685;
 stars6X = 330;
 stars6Y = 526;
 stars7X = 540;
 stars7Y = 431;
 stars8X = 375;
 stars8Y = 245;
 stars9X = 550;
 stars9Y = 113;
 stars10X = 310;
 stars10Y = 57;
 speed = 0;

 pointsX[0] = (int) (screenWidth * 0.39351851851851855);
 pointsX[1] = (int) (screenWidth * 0.25925925925925924);
 pointsX[2] = (int) (screenWidth * 0.46296296296296297);
 pointsX[3] = (int) (screenWidth * 0.2222222222222222);
 pointsX[4] = (int) (screenWidth * 0.37037037037037035);
 pointsX[5] = (int) (screenWidth * 0.5);
 pointsX[6] = (int) (screenWidth * 0.3055555555555556);
 pointsX[7] = (int) (screenWidth * 0.5);
 pointsX[8] = (int) (screenWidth * 0.3472222222222222);
 pointsX[9] = (int) (screenWidth * 0.5092592592592593);
 pointsX[10] = (int) (screenWidth * 0.28703703703703703);

 // pointsX[0] = stars0X;
 // pointsX[1] = stars1X;
 // pointsX[2] = stars2X;
 // pointsX[3] = stars3X;
 // pointsX[4] = stars4X;
 // pointsX[5] = stars5X;
 // pointsX[6] = stars6X;
 // pointsX[7] = stars7X;
 // pointsX[8] = stars8X;
 // pointsX[9] = stars9X;
 // pointsX[10] = stars10X;

 pointsX[11] = pointsX[0];
 pointsX[12] = pointsX[1];
 pointsX[13] = pointsX[2];
 pointsX[14] = pointsX[3];
 pointsX[15] = pointsX[4];
 pointsX[16] = pointsX[5];
 pointsX[17] = pointsX[6];
 pointsX[18] = pointsX[7];
 pointsX[19] = pointsX[8];
 pointsX[20] = pointsX[9];
 pointsX[21] = pointsX[10];

 pointsY[0] = stars0Y;
 pointsY[1] = stars1Y;
 pointsY[2] = stars2Y;
 pointsY[3] = stars3Y;
 pointsY[4] = stars4Y;
 pointsY[5] = stars5Y;
 pointsY[6] = stars6Y;
 pointsY[7] = stars7Y;
 pointsY[8] = stars8Y;
 pointsY[9] = stars9Y;
 pointsY[10] = stars10Y;

 // pointsY[0] = (int) (screenHeight * 0.6145833333333334);
 // pointsY[1] = (int) (screenHeight * 0.5546875);
 // pointsY[2] = (int) (screenHeight * 0.5036458333333333);
 // pointsY[3] = (int) (screenHeight * 0.43854166666666666);
 // pointsY[4] = (int) (screenHeight * 0.3963541666666667);
 // pointsY[5] = (int) (screenHeight * 0.3411458333333333);
 // pointsY[6] = (int) (screenHeight * 0.27395833333333336);
 // pointsY[7] = (int) (screenHeight * 0.22447916666666667);
 // pointsY[8] = (int) (screenHeight * 0.12760416666666666);
 // pointsY[9] = (int) (screenHeight * 0.058854166666666666);
 // pointsY[10] = (int) (screenHeight * 0.0296875);

 pointsY[11] = pointsY[0] - (bmpBackGround1.getHeight());
 pointsY[12] = pointsY[1] - (bmpBackGround1.getHeight());
 pointsY[13] = pointsY[2] - (bmpBackGround1.getHeight());
 pointsY[14] = pointsY[3] - (bmpBackGround1.getHeight());
 pointsY[15] = pointsY[4] - (bmpBackGround1.getHeight());
 pointsY[16] = pointsY[5] - (bmpBackGround1.getHeight());
 pointsY[17] = pointsY[6] - (bmpBackGround1.getHeight());
 pointsY[18] = pointsY[7] - (bmpBackGround1.getHeight());
 pointsY[19] = pointsY[8] - (bmpBackGround1.getHeight());
 pointsY[20] = pointsY[9] - (bmpBackGround1.getHeight());
 pointsY[21] = pointsY[10] - (bmpBackGround1.getHeight());

 for (int i = 0; i < 11; i++) {
 double x = (double) pointsX[i] / screenWidth;
 DecimalFormat df = new DecimalFormat("0.00");// 格式化小数，.后跟几个零代表几位小数
 LogUtils.d("比例 i " + i + " x = " + x);
 }
 for (int i = 0; i < 11; i++) {
 double y = (double) pointsY[i] / screenHeight;
 DecimalFormat df = new DecimalFormat("0.00");// 格式化小数，.后跟几个零代表几位小数
 LogUtils.d("比例 i " + i + " y = " + y);
 }
 // float y = (float) 10 / screenHeight;
 // float x = (float) 10 / screenWidth;

 // LogUtils.d("比例 i 10 x = " + x + "比例 i 10 y = " +
 // y);
 }

 private void speedStarsXY() {
 for (int i = 0; i < 22; i++) {
 pointsY[i] += speed;
 }

 }

 private void setStartsXYDown(int type) {
 // LogUtils.d("pointy 0 之前= " + pointsY[0]);
 // LogUtils.d("pointy 11之前 = " + pointsY[11]);
 if (type == 0) {
 for (int i = 0; i < 11; i++) {

 int p = pointsY[i + 11];
 pointsY[i] = p - (bmpBackGround1.getHeight());
 // LogUtils.d("改变 后的 pointsY[" + i + "] = " + pointsY[i]);
 }

 } else {
 for (int i = 0; i < 11; i++) {
 // LogUtils.d("向下的第二种 pointsY[i+ 11] " + (pointsY[i] -
 // (bmpBackGround1.getHeight())));
 int p = pointsY[i];
 pointsY[i + 11] = p - (bmpBackGround1.getHeight());
 // LogUtils.d("改变 后的 向下的第二种 pointsY[" + i + "] = " +
 // pointsY[i]);
 }
 }
 }

 private void setStartsXYUp(int type) {
 if (type == 0) {
 for (int i = 0; i < 11; i++) {
 pointsY[i] = pointsY[i + 11] + (bmpBackGround1.getHeight());
 }
 } else {
 for (int i = 0; i < 11; i++) {
 pointsY[i + 11] = pointsY[i] + (bmpBackGround1.getHeight());
 }
 }
 }

 @Override
 public boolean onTouchEvent(MotionEvent event) {
 // 获取当前触控位置
 // LogUtils.d("触摸事件 event.getAction() = " + event.getAction());
 int x = (int) event.getX();
 int y = (int) event.getY();

 boolean isDown;
 switch (event.getAction()) {

 case MotionEvent.ACTION_DOWN:// 当用户是按下
 pointX = x;
 pointY = y;
 mDownX = (int) event.getX();
 mDownY = (int) event.getY();
 LogUtils.d(" 按下的 点 x = " + pointX + " y = " + pointY);
 // LogUtils.d(" 按下的 点的比例 x = " + (double) pointX / screenWidth +
 // " y = " + (double) pointY / screenHeight);
 break;
 case MotionEvent.ACTION_MOVE:// 移动
 // LogUtils.d("init moveY " + moveY);
 tempy1 = moveY;

 moveY = (int) event.getY();

 speed = moveY - tempy1;

 // 判断向上移动还是向下移动
 if (speed > 0) {
 isDown = true;
 } else {
 isDown = false;
 }
 logic(isDown);// 计算点的距离
 // LogUtils.d("pointY = " + pointY + " moveY = " + moveY + " speed "
 // + (speed));
 break;
 case MotionEvent.ACTION_UP:
 moveY = 0;
 mTempX = (int) event.getX();
 mTempY = (int) event.getY();
 if (Math.abs(mTempX - mDownX) > MAX_DISTANCE_FOR_CLICK
  || Math.abs(mTempY - mDownY) > MAX_DISTANCE_FOR_CLICK) {
 // 抬起的距离 和按下的距离太远 不形成点击事件
 // LogUtils.d("起的距离 和按下的距离太远 不形成点击事件");
 } else {
 isOnclick(mTempX, mTempY);

 }

 break;
 }

 invalidate();// 刷新界面
 // 使系统响应事件，返回true
 return true;

 }

 // 添加自定义点击事件
 private boolean isOnclick(int x, int y) {
 LogUtils.d("点击了");
 if (listener != null) {
 // 判断是否点击到星星上面
 return isStarsOnclick(x, y, listener);
 } else {
 return false;
 }
 }

 private boolean isStarsOnclick(int x, int y, ScrollViewListener listener) {

 int x1;
 int y1;
 int x2;
 int y2;
 // LogUtils.d("点击 X = " + x + " 点击 Y = " + y + " 星星 X = " + pointsX[0]
 // + " 星星 y = " + pointsY[0]);
 for (int i = 0; i < 22; i++) {
 x1 = pointsX[i];
 y1 = pointsY[i];
 // LogUtils.d("比例 y 100 = " + (double) 100 / screenHeight);
 // LogUtils.d("比例 x 100 = " + (double) 100 / screenWidth);
 x2 = pointsX[i] + (int) (screenWidth * 0.09259259259259259);
 y2 = pointsY[i] + (int) (screenHeight * 0.052083333333333336);
 if (x > x1 && x < x2 && y > y1 && y < y2) {
 // LogUtils.d("点击到了");
 int current = getOnclickNo(i) + 1;
 listener.myOnclick(current);
 // LogUtils.d("点击的第几位 : " + current);
 return true;

 }
 }
 // LogUtils.d("没有点击到");

 return false;

 }

 // 判断是否到顶部了
 private void isTop() {

 if (activityNumber >= 8 && bg1y > getHeight()) {
 // LogUtils.d("当第1张图片的Y坐标超出屏幕， 图片向上的情况 activityNumber 加上的 =======到顶部= bg1y"
 // + activityNumber);
 bg1y = getHeight();
 bg2y = bg1y - bmpBackGround1.getHeight();
 speed = 0;
 speedStarsXY();
 return;
 } else {
 speedStarsXY();
 }
 }

 // 背景滚动的逻辑函数
 public void logic(boolean isDown) {

 if (isDown) {// 手指向下

 if (tempy1 != 0) {
 bg1y += speed;
 bg2y += speed;
 // LogUtils.d("isTop = " + isTop());
 isTop();
 }
 // //判断是否到顶部了
 // if (activityNumber >= 8 && bg1y > getHeight()) {
 // //LogUtils.d("当第1张图片的Y坐标超出屏幕， 图片向上的情况 activityNumber 加上的 =======到顶部= bg1y"
 // + activityNumber);
 // bg1y = getHeight();
 // bg2y = bg1y - bmpBackGround1.getHeight();
 // return;
 // }

 // LogUtils.d("bg1y = " + bg1y + " bg2y = " + bg2y +
 // " bg1y - bmpBackGround1.getHeight() = " + (bg1y -
 // bmpBackGround1.getHeight()) +
 // " -Math.abs(bmpBackGround1.getHeight() - getHeight()) = " +
 // (-Math.abs(bmpBackGround1.getHeight() - getHeight())));
 // 当第一张图片的Y坐标超出屏幕， 手指向下的情况
 // 立即将其坐标设置到第二张图的上方
 if (bg1y > getHeight()) {
 bg1y = bg2y - bmpBackGround1.getHeight();
 activityNumber += 1;
 // LogUtils.d("bg1y = " + bg1y + " getHeight = " + getHeight() +
 // " bmpBackGround1.getHeight() = " +
 // bmpBackGround1.getHeight() + " activityNumber 加上的 = " +
 // activityNumber);
 setStartsXYDown(0);
 // LogUtils.d("当第1张图片的Y坐标超出屏幕， 图片向上的情况 activityNumber 加上的 = "
 // + activityNumber);
 }
 // 当第二张图片的Y坐标超出屏幕，向下的情况
 // 立即将其坐标设置到第一张图的上方
 if (bg2y > getHeight()) {
 bg2y = bg1y - bmpBackGround1.getHeight();
 activityNumber += 1;
 // LogUtils.d("当第1张图片的Y坐标超出屏幕， 图片向上的情况 activityNumber 加上的 = "
 // + activityNumber);
 // LogUtils.d("bg1y = " + bg1y + " getHeight = " + getHeight() +
 // " bmpBackGround1.getHeight() = " +
 // bmpBackGround1.getHeight() + " activityNumber 加上的 = " +
 // activityNumber);
 setStartsXYDown(1);
 }

 } else {

 // 当第一张图片的Y坐标超出屏幕， 手指向上的情况
 // 立即将其坐标设置到第二张图的下方
 if (tempy1 != 0) {
 bg1y += speed;
 bg2y += speed;
 // //判断是否到底部
 isBottom();
 }
 // LogUtils.d("bg1y = " + bg2y + " bg2y = " + bg2y +
 // " bg1y - bmpBackGround1.getHeight() = " + (bg1y -
 // bmpBackGround1.getHeight()) +
 // " -Math.abs(bmpBackGround1.getHeight() - getHeight()) = " +
 // (-Math.abs(bmpBackGround1.getHeight() - getHeight())));
 if (bg1y < -Math.abs(bmpBackGround1.getHeight() - getHeight())) {
 if (bg2y < bg1y) {
  activityNumber -= 1;
  setStartsXYUp(1);
  // LogUtils.d("当第1张图片的Y坐标超出屏幕， 图片向下的情况 activityNumber 减去的 = "
  // + activityNumber);
 }
 bg2y = bg1y + bmpBackGround1.getHeight();// 换屏了 首尾相接
 }
 if (bg2y < -Math.abs(bmpBackGround1.getHeight() - getHeight())) {
 if (bg1y < bg2y) {// 当换图的时候 给减一
  activityNumber -= 1;
  setStartsXYUp(0);
  // LogUtils.d("当第二张图片的Y坐标超出屏幕， 图片向下的情况 activityNumber 减去的 = "
  // + activityNumber);
 }
 bg1y = bg2y + bmpBackGround1.getHeight();
 }

 }
 }

 private void isBottom() {
 int treeHeight = bmpBackGround1.getHeight() - getHeight();

 if (treeHeight < 0) {
 if (activityNumber <= 2
  && bg1y < Math
  .abs(bmpBackGround1.getHeight() - getHeight())) {// 如果是一开始的
     // 到底部时
     // 不能滑动
     // 并且重置
     // 坐标点
 activityNumber = 2;
 bg1y = Math.abs(bmpBackGround1.getHeight() - getHeight());
 // 第二张背景图紧接在第一张背景的上方
 // 直接连接不和谐，为了让视觉看不出是两张图连接而修正的位置
 bg2y = bg1y - bmpBackGround1.getHeight();
 initStartsXY();
 return;
 } else {
 speedStarsXY();
 // LogUtils.d("pointy speedStarsXY 11之后 = " + pointsY[11]);
 }
 } else {
 if (activityNumber <= 2
  && bg1y < -Math.abs(bmpBackGround1.getHeight()
  - getHeight())) {// 如果是一开始的 到底部时 不能滑动 并且重置 坐标点
 activityNumber = 2;
 bg1y = -Math.abs(bmpBackGround1.getHeight() - getHeight());

 // 第二张背景图紧接在第一张背景的上方
 // +101的原因：虽然两张背景图无缝隙连接但是因为图片资源头尾
 // 直接连接不和谐，为了让视觉看不出是两张图连接而修正的位置
 bg2y = bg1y - bmpBackGround1.getHeight();
 initStartsXY();
 return;
 } else {
 speedStarsXY();
 // LogUtils.d("pointy speedStarsXY 11之后 = " + pointsY[11]);
 }
 }
 }

 private void initBgView() {
 int treeHeight = bmpBackGround1.getHeight() - getHeight();

 if (treeHeight < 0) {
 activityNumber = 2;
 bg1y = Math.abs(bmpBackGround1.getHeight() - getHeight());
 // 第二张背景图紧接在第一张背景的上方
 // 直接连接不和谐，为了让视觉看不出是两张图连接而修正的位置
 bg2y = bg1y - bmpBackGround1.getHeight();
 initStartsXY();
 return;
 } else {
 activityNumber = 2;
 bg1y = -Math.abs(bmpBackGround1.getHeight() - getHeight());
 // 第二张背景图紧接在第一张背景的上方

 bg2y = bg1y - bmpBackGround1.getHeight();
 initStartsXY();
 return;
 }
 }

}