Android custom view to realize Gobang games

This example shares the specific code of Gobang game implemented by Android for your reference. The specific contents are as follows

Drawings:

code:

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,spacing*i,height,paint);
 }

 num = height/spacing;

 for(int i=0;i<=num;i++)
 {
  canvas.drawLine(0,width,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);

 }

}

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