Android自定义View实现五子棋游戏

public class gobangpanel extends view {

 private int mpanelwidth;//棋盘的宽度
 private float mlineheight;//行,高要为float
 private int max_line = 15;//棋盘行数
 private int max_count_in_line = 5;//设置赢棋子个数(6子棋设置为6)

 private paint mpaint = new paint();//画笔
 private bitmap mwhitepiece;//白色棋子
 private bitmap mblackpiece;//黑色棋子

 private float ratiopieceoflineheight = 3 * 1.0f / 4;//2个棋子间3/4距离

 //白旗先手,当前轮到白棋了
 private boolean miswhite = true;
 private arraylist<point> mwhitearray = new arraylist<>();//白棋数组
 private list<point> mblackarray = new arraylist<>();//黑骑数组

 private boolean misgameover;//游戏是否结束
 private boolean miswhitewinner;//白色棋子赢 true白子赢,false黑色赢

 public gobangpanel(context context, attributeset attrs) {
  super(context, attrs);
  init();
 }

 /**
  * 初始化画笔参数
  */
 private void init() {
  mpaint.setcolor(0x88000000);//paint颜色 半透明灰色
  mpaint.setantialias(true);//抗锯齿(边界明显变模糊)
  mpaint.setdither(true);//设置防抖动(图片柔和)
  mpaint.setstyle(paint.style.stroke);//样式
  //黑、白棋资源图片
  mwhitepiece = bitmapfactory.decoderesource(getresources(), r.mipmap.white_bg);
  mblackpiece = bitmapfactory.decoderesource(getresources(), r.mipmap.black_bg);
 }

 /**
  * 自定义view尺寸的规则
  */
 protected void onmeasure(int widthmeasurespec, int heightmeasurespec) {
  //宽和高
  int widthsize = measurespec.getsize(widthmeasurespec);
  int widthmode = measurespec.getmode(widthmeasurespec);

  int heightsize = measurespec.getsize(heightmeasurespec);
  int heightmode = measurespec.getmode(heightmeasurespec);
  int width = math.max(widthsize, heightsize); //最大值

  if (widthmode == measurespec.unspecified) {
   width = heightsize;
  } else if (heightmode == measurespec.unspecified) {
   width = widthsize;
  }
  setmeasureddimension(width, width);
 }

 /**
  * 控件大小发生改变时调用
  */
 protected void onsizechanged(int w, int h, int oldw, int oldh) {
  super.onsizechanged(w, h, oldw, oldh);
  mpanelwidth = w;//棋盘的宽高
  mlineheight = mpanelwidth * 1.0f / max_line;

  int piecewidth = (int) (mlineheight * ratiopieceoflineheight); //比例
  mwhitepiece = bitmap.createscaledbitmap(mwhitepiece, piecewidth, piecewidth, false);//棋子跟随控件变化
  mblackpiece = bitmap.createscaledbitmap(mblackpiece, piecewidth, piecewidth, false);
 }

 //触摸焦点
 public boolean ontouchevent(motionevent event) {

  if (misgameover) return false;
  int action = event.getaction();
  if (action == motionevent.action_up) {

   int x = (int) event.getx();
   int y = (int) event.gety();

   point p = getvalidpoint(x, y);
   if (mwhitearray.contains(p) || mblackarray.contains(p)) {
    return false;
   }
   if (miswhite) {
    mwhitearray.add(p);
   } else {
    mblackarray.add(p);
   }
   invalidate();//重绘棋子
   miswhite = !miswhite;
  }
  return true;//感兴趣交给其处理
 }

 private point getvalidpoint(int x, int y) {
  return new point((int) (x / mlineheight), (int) (y / mlineheight));
 }

 protected void ondraw(canvas canvas) {
  super.ondraw(canvas);
  drawboard(canvas);
  drawpieces(canvas);
  checkgameover();
 }

 private static final string tag = "gobangpanel";
 /**
  * 游戏结束方法
  */
 public void checkgameover() {
  boolean whitewin = checkfiveinline(mwhitearray);
  boolean blackwin = checkfiveinline(mblackarray);
  //黑棋或白棋赢游戏结束
  if (whitewin || blackwin) {
   misgameover = true;
   miswhitewinner = whitewin;
   if (null != listener) {
    listener.onfinish(miswhitewinner);
    log.e(tag, "checkgameover: 111111" );
   }
   log.e(tag, "checkgameover: 222222" );
  }
 }

 /**
  * 判断棋子是否5个相邻【5个相连只有4中情况分别是：水平、垂直、左斜和右斜】
  */
 private boolean checkfiveinline(list<point> points) {

  for (point p : points) {
   int x = p.x;
   int y = p.y;
   boolean win = checklevel(x, y, points);
   if (win) return true;
   win = checkvetical(x, y, points);
   if (win) return true;
   win = checkleftwin(x, y, points);
   if (win) return true;
   win = checkrightwin(x, y, points);
   if (win) return true;
  }
  return false;
 }

 /**
  * 判断x,y位置的棋子是否【水平】有相邻的五个一致
  */
 private boolean checklevel(int x, int y, list<point> points) {
  int count = 1;
  //横向左边棋子个数
  for (int i = 1; i < max_count_in_line; i++) {
   //如果有加1,没有重新计算是否有五个,否者中断
   if (points.contains(new point(x - i, y))) {
    count++;
   } else {
    break;
   }
  }
  //有5个时则赢
  if (count == max_count_in_line) return true;

  //横向右边棋子个数
  for (int i = 1; i < max_count_in_line; i++) {
   //如果有加1,没有重新计算是否有五个,否者中断
   if (points.contains(new point(x + i, y))) {
    count++;
   } else {
    break;
   }
  }
  //有5个时则赢
  if (count == max_count_in_line) return true;
  return false;
 }

 /**
  * 判断x,y位置的棋子是否[垂直]有相邻的五个一致
  */
 private boolean checkvetical(int x, int y, list<point> points) {
  int count = 1;
  //上下棋子个数
  for (int i = 1; i < max_count_in_line; i++) {
   //如果有加1,没有重新计算是否有五个,否者中断
   if (points.contains(new point(x, y - i))) {
    count++;
   } else {
    break;
   }
  }
  //有5个时则赢,return true;
  if (count == max_count_in_line) return true;

  for (int i = 1; i < max_count_in_line; i++) {
   //如果有加1,没有重新计算是否有五个,否者中断
   if (points.contains(new point(x, y + i))) {
    count++;
   } else {
    break;
   }
  }
  //有5个时则赢
  if (count == max_count_in_line) return true;

  return false;
 }

 /**
  * 判断x,y位置的棋子是否【左斜和右斜】有相邻的五个一致
  */
 private boolean checkleftwin(int x, int y, list<point> points) {
  int count = 1;
  //横向上下棋子个数
  for (int i = 1; i < max_count_in_line; i++) {
   //如果有加1,没有重新计算是否有五个,否者中断
   if (points.contains(new point(x - i, y + i))) {
    count++;
   } else {
    break;
   }
  }
  //有5个时则赢,return true;
  if (count == max_count_in_line) return true;

  for (int i = 1; i < max_count_in_line; i++) {
   //如果有加1,没有重新计算是否有五个,否者中断
   if (points.contains(new point(x + i, y - i))) {
    count++;
   } else {
    break;
   }
  }
  //有5个时则赢
  if (count == max_count_in_line) return true;

  return false;
 }

 /**
  * 判断x,y位置的棋子是否【右斜】有相邻的五个一致
  */
 private boolean checkrightwin(int x, int y, list<point> points) {

  int count = 1;
  //横向上下棋子个数
  for (int i = 1; i < max_count_in_line; i++) {
   //如果有加1,没有重新计算是否有五个,否者中断
   if (points.contains(new point(x - i, y - i))) {
    count++;
   } else {
    break;
   }
  }
  //有5个时则赢,return true;
  if (count == max_count_in_line) return true;

  for (int i = 1; i < max_count_in_line; i++) {
   //如果有加1,没有重新计算是否有五个,否者中断
   if (points.contains(new point(x + i, y + i))) {
    count++;
   } else {
    break;
   }
  }
  //有5个时则赢
  if (count == max_count_in_line) return true;

  return false;
 }

 private void drawpieces(canvas canvas) {
  //白色棋子
  for (int i = 0, n = mwhitearray.size(); i < n; i++) {
   point whitepoint = mwhitearray.get(i);
   canvas.drawbitmap(mwhitepiece,
     (whitepoint.x + (1 - ratiopieceoflineheight) / 2) * mlineheight,
     (whitepoint.y + (1 - ratiopieceoflineheight) / 2) * mlineheight, null);
  }
  //黑色棋子
  for (int i = 0, n = mblackarray.size(); i < n; i++) {
   point blackpoint = mblackarray.get(i);
   canvas.drawbitmap(mblackpiece,
     (blackpoint.x + (1 - ratiopieceoflineheight) / 2) * mlineheight,
     (blackpoint.y + (1 - ratiopieceoflineheight) / 2) * mlineheight, null);
  }
 }

 /**
  * 画格子棋盘
  */
 private void drawboard(canvas canvas) {
  int w = mpanelwidth;
  float lineheight = mlineheight;
  for (int i = 0; i < max_line; i++) {
   int startx = (int) (lineheight / 2);//横坐标起点,终点
   int endx = (int) (w - lineheight / 2);
   int y = (int) ((0.5 + i) * lineheight);
   canvas.drawline(startx, y, endx, y, mpaint);
   canvas.drawline(y, startx, y, endx, mpaint);
  }
 }

 /**
  * 再来一局
  */
 public void start() {
  if (null != mwhitearray && null != mblackarray) {
   mwhitearray.clear();//清除数据
   mblackarray.clear();
  }
  misgameover = false;
  miswhitewinner = false;
  invalidate(); //再次调用
 }

 /**
  * 后台运行时,调用此方法,防止数据丢失
  */
 private static final string instance = "instance";
 private static final string instance_game_over = "instance_game_over"; //游戏结束
 private static final string instance_white_array = "instance_white_array"; //白
 private static final string instance_black_array = "instance_black_array";

 /**
  * 保存数据
  */
 protected parcelable onsaveinstancestate() {
  bundle bundle = new bundle();
  bundle.putparcelable(instance, super.onsaveinstancestate());
  bundle.putboolean(instance_game_over, misgameover);
  bundle.putparcelablearraylist(instance_white_array, mwhitearray);
  bundle.putparcelablearraylist(instance_black_array, mwhitearray);
  return bundle;
 }

 /**
  * 恢复时调用
  */
 protected void onrestoreinstancestate(parcelable state) {
  if (state instanceof bundle) {
   bundle bundle = (bundle) state;
   misgameover = bundle.getboolean(instance_game_over);
   mwhitearray = bundle.getparcelablearraylist(instance_white_array);
   mblackarray = bundle.getparcelablearraylist(instance_black_array);
   super.onrestoreinstancestate(bundle.getparcelable(instance));
   return;
  }
  super.onrestoreinstancestate(state);
 }

 /**
  * 游戏结束回调
  */
 public onfinishlistener listener;

 public void setlistener(onfinishlistener listener) {
  this.listener = listener;
 }

 public interface onfinishlistener {

  void onfinish(boolean miswhitewinner);
 }
}

public class mainactivity extends appcompatactivity {

 private gobangpanel panel;

 protected void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.activity_main);
  panel = this.findviewbyid(r.id.gobang_panel);
  panel.setlistener(new gobangpanel.onfinishlistener() {
   @override
   public void onfinish(boolean miswhitewinner) {
    initdialog(miswhitewinner);
   }
  });
 }

 /**
  * 初始化弹框
  */
 private void initdialog(boolean miswhitewinner) {
  alertdialog dialog = new alertdialog.builder(this)
    //.settitle("这是标题")
    .setmessage(miswhitewinner ? "白棋胜利，是否重新开始？" : "黑棋胜利，是否重新开始？")
    //.seticon(r.mipmap.ic_launcher)
    .setpositivebutton("确定", new dialoginterface.onclicklistener() {//添加"yes"按钮
     @override
     public void onclick(dialoginterface dialoginterface, int i) {
      panel.start();
     }
    })
//    .setnegativebutton("取消", new dialoginterface.onclicklistener() {//添加取消
//     @override
//     public void onclick(dialoginterface dialoginterface, int i) {
//      toast.maketext(mainactivity.this, "这是取消按钮", toast.length_short).show();
//     }
//    })
    //方法一：setcanceledontouchoutside(false);按对话框以外的地方不起作用。按返回键起作用
    //方法二：setcanceleable(false);按对话框以外的地方不起作用。按返回键也不起作用
    .setcancelable(false)
    .create();
  dialog.show();
 }
}

<horizontalscrollview xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:background="#fff"
 tools:context=".mainactivity">

 <scrollview
  android:layout_width="match_parent"
  android:layout_height="match_parent">
  <com.helloworld.game.gobangpanel
   android:id="@+id/gobang_panel"
   android:layout_width="1000dp"
   android:layout_height="1000dp"
   android:layout_centerinparent="true" />
 </scrollview>
</horizontalscrollview>