分成四个类：CrosswordsActivity，DialogView，Game，MainView
CrosswordsActivity（主类）：
package com.Crosswords.Activity;import android.app.Activity;import android.os.Bundle;public class CrosswordsActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(new MainView(this)); }} DialogView(对话框的一个类)：
package com.Crosswords.Activity;import android.app.Dialog;import android.content.Context;import android.os.Bundle;import android.view.View;public class DialogView extends Dialog{ MainView mainview; // View []views=new View[9]; View[] views=new View[12]; int []used; public DialogView(Context context,int []used,MainView mainview) { super(context); this.used=used; this.mainview=mainview; } @Override public void onCreate(Bundle buildle){ super.onCreate(buildle); setTitle("请输入数字"); setContentView(R.layout.dialog); this.getView(); for(int i=0;i Game（数独的算法类）：
package com.Crosswords.Activity;public class Game { String str= "500200008"+ "700008400"+ "000390060"+ "001630009"+ "000000654"+ "968400000"+ "005006071"+ "609005803"+ "080903046"; //全部的数字 int []crosswords=new int[9*9]; //各个坐标已经使用的数字 int [][][]usedwords=new int[9][9][]; //用来标记能够修改 int [][]flag =new int[9][9]; public Game() { // TODO Auto-generated constructor stub crosswords=getCrossword(str); flag=getflag(); //GetAllUsed(); } //得到所有已经使用数组 public void GetAllUsed(){ for(int i=0;i<9;i++){ for(int j=0;j<9;j++){ usedwords[i][j]=getUsedWords(i, j); } } } //用来计算单元格中已经使用的格子 public int[] getUsedWords(int x,int y){ int [] c=new int[9]; //计算一行 int temp; for(int i=0;i<9;i++){ temp=gettitle(i, y); if(x==i){ continue; }else{ if(temp!=0){ c[temp-1]=temp; } } } //计算一列 for(int i=0;i<9;i++){ temp=gettitle(x, i); if(y==i){ continue; }else{ if(temp!=0){ c[temp-1]=temp; } } } //计算单元格 //这个表达式是为了求出点击事件的具体大方块位置 int stax=(x/3)*3; int stay=(y/3)*3; for(int i=stax;i MainView（计算单元格的一个类）:
package com.Crosswords.Activity;import android.app.AlertDialog;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Paint.Align;import android.graphics.Paint.FontMetrics;import android.text.style.LineBackgroundSpan;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.view.ViewDebug.FlagToString;import android.widget.TextView;public class MainView extends View{float width;float height;int selectedX;int selectedY;Game game=new Game();//画笔不能重用 public MainView(Context context) { super(context); // TODO Auto-generated constructor stub } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { // TODO Auto-generated method stub super.onSizeChanged(w, h, oldw, oldh); //计算单元格 width=w/9; height=h/9; } //画笔事件 @Override protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub super.onDraw(canvas); Paint backgroundpaint=new Paint(); backgroundpaint.setColor(Color.parseColor("#C2E7C2")); canvas.drawRect(0,0,getWidth(),getHeight(), backgroundpaint); //#BFCDDB小格子颜色 Paint linepaint1=new Paint(); linepaint1.setColor(Color.parseColor("#BFCDDB")); for (int i = 0; i < 10; i++) { canvas.drawLine(0,i*getHeight()/9, getWidth(), i*getHeight()/9, linepaint1); canvas.drawLine(i*getWidth()/9, 0, i*getWidth()/9, getHeight(), linepaint1); } Paint linepaint2=new Paint(); linepaint2.setColor(Color.parseColor("#3399FF")); for(int i=0;i<4;i++){ canvas.drawLine(0, i*getHeight()/3, getWidth(), i*getHeight()/3, linepaint2); canvas.drawLine(i*getWidth()/3, 0, i*getWidth()/3, getHeight(), linepaint2); } Paint numberpaint=new Paint(); numberpaint.setStyle(Paint.Style.STROKE); numberpaint.setTextSize(height*0.75f); numberpaint.setTextAlign(Paint.Align.CENTER); FontMetrics fm=numberpaint.getFontMetrics(); float x=width/2; float y=height/2-(fm.ascent+fm.descent)/2; String text; for (int i = 0; i < 9; i++) { for(int j=0;j<9;j++){ text=game.gettitleString(i, j); if(game.flag(i,j)==1){ numberpaint.setColor(Color.BLACK); canvas.drawText(text, width*i+x, height*j+y, numberpaint); }else{ numberpaint.setColor(Color.parseColor("#6B6743")); canvas.drawText(text, width*i+x, height*j+y, numberpaint); } } } } //监听点击面板事件 @Override public boolean onTouchEvent(MotionEvent event){ if(event.getAction()!=MotionEvent.ACTION_DOWN){ return super.onTouchEvent(event); } selectedX=(int)(event.getX()/width); selectedY=(int)(event.getY()/height); int [] usedwords=game.getUsedWords(selectedX, selectedY); StringBuffer usedstr=new StringBuffer(); for(int x:usedwords){ usedstr.append(x+" "); } //使用自定义的对话框 /* LayoutInflater inflater=LayoutInflater.from(this.getContext()); View view=inflater.inflate(R.layout.dialog, null); TextView text=(TextView)view.findViewById(R.id.used); text.setText(usedstr.toString()); AlertDialog.Builder builder=new AlertDialog.Builder(this.getContext()); builder.setView(view); AlertDialog dialog=builder.create(); dialog.show(); */ //判断坐标是否是原来的数独 if(game.flag(selectedX, selectedY)==1){ DialogView dialog=new DialogView(getContext(), usedwords,this); dialog.show(); } return true; } public void SetSelectTitle(int title){ if(game.SetTitleValid(selectedX, selectedY, title)){ //刷新页面 invalidate(); } }}