Android自定义View实现五子棋小游戏

package com.example.fiveson;import java.util.LinkedList;import java.util.List;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.View;public class FiveSon extends View { public FiveSon(Context context) { super(context); // TODO Auto-generated constructor stub init(context, null); } public FiveSon(Context context, AttributeSet attrs) { super(context, attrs); // TODO Auto-generated constructor stub init(context, attrs); } public FiveSon(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); // TODO Auto-generated constructor stub init(context, attrs); }  private Paint paint = new Paint(); private Paint circlePaint = new Paint();  // 旗子： 信息 代表 第几行 第几列？ private List<int[]> chesses = new LinkedList<int[]>();  private void init(Context context, AttributeSet attrs) { chesses.add(new int[]{3,5}); chesses.add(new int[]{3,6}); }   int spacing = 100;   @Override protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub super.onDraw(canvas);  int width = getWidth(); int height = getHeight();   //1 绘制 X 坐标  int num = width / spacing;  paint.setColor(Color.BLACK); for(int i=0;i<=num;i++) {  canvas.drawLine(spacing*i, 0, spacing*i, height, paint); }  num = height/spacing;  for(int i=0;i<=num;i++) {  canvas.drawLine(0,spacing*i, width,spacing*i, paint); }  //2 绘制Y 坐标    //3 绘制 旗子  if(!chesses.isEmpty()) {    int count = chesses.size();    for(int i=0;i<count;i++)  {  // 行列 信息  int[] location = chesses.get(i);    int rawX = location[1] * spacing;  int rawY = location[0] * spacing;    if(i%2==0)  {   circlePaint.setColor(Color.BLACK);  }else {   circlePaint.setColor(Color.GREEN);  }    canvas.drawCircle(rawX, rawY, 20, circlePaint);  }   } }   /** * 全然自己定义空间： *  * 处理你恶不处理时间爱你的方法: * onTouchEvent() * onKeyEvent() *  * 当然 也能够通过  * setOnTouchListener() * setOnKeyListener(); *  * 外部操作： * setOnTouchListener(OnTouchListener l)  * setOnKeyListener(OnKeyListener l)  *  *  *  * */  @Override public boolean onTouchEvent(MotionEvent event) {  boolean isComsumed = false;  int action = event.getAction();  if(action == MotionEvent.ACTION_DOWN) {//  分析点击的坐标 来推断 点击的 行数和 列数    int ex = (int)event.getX();  int ey = (int)event.getY();    int colNum = (int)(ex / spacing);  int rowNum = (int)(ey / spacing);    int colcc = ex % spacing;  int rowcc = ey % spacing;    if(colcc>=(spacing/2))  {  colcc++;  }  if(rowcc>=(spacing/2))  {  rowcc++;  }  //  推断什么时候add   int len = chesses.size();    if(len>0)  {  boolean has = false;  for(int i = len-1;i>=0;i--)  {   int[] chs = chesses.get(i);   if(rowNum == chs[0] && colNum == chs[1])   {   has = true;   break;   }  }  if(!has)  {   chesses.add(new int[]{rowNum,colNum});   invalidate();  }  }else {  chesses.add(new int[]{rowNum,colNum});  invalidate();  }    isComsumed = true;   }else {  isComsumed = super.onTouchEvent(event); }  return super.onTouchEvent(event);  } }