数独设计（4）

经过了前两天的设置后，我们就可以再View类中，进行游戏的布置，和进行操作了。

package com.mars.demo;import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.FontMetrics;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;public class MyView extends View
{//定义单元格的宽和高public float width;public float height;private int selectX;private int selectY;public Game game = new Game();public MyView(Context context){super(context);// TODO Auto-generated constructor stub}@Overrideprotected void onSizeChanged(int w, int h, int oldw, int oldh){// TODO Auto-generated method stubthis.width = w/9f;this.height = h/9f;super.onSizeChanged(w, h, oldw, oldh);}@Overrideprotected void onDraw(Canvas canvas){//定义画笔对象-->绘制背景Paint paint = new Paint();//设置画笔的颜色paint.setColor(getResources().getColor(R.color.shudu_background));//绘制手机屏幕背景色canvas.drawRect(0, 0, getWidth(), getHeight(), paint);//定义画笔对象-->绘制格子线条Paint darkPaint = new Paint();darkPaint.setColor(getResources().getColor(R.color.shudu_dark));Paint hilitePaint = new Paint();hilitePaint.setColor(getResources().getColor(R.color.shudu_hilite));Paint lightPaint = new Paint();lightPaint.setColor(getResources().getColor(R.color.shudu_light));//绘制九宫格for(int i = 0; i<9; i++){//绘制横线canvas.drawLine(0, i*height, getWidth(), i*height, lightPaint);canvas.drawLine(0, i*height+1, getWidth(), i*height+1, hilitePaint);//绘制纵线canvas.drawLine(i*width, 0, i*width, getHeight(), lightPaint);canvas.drawLine(i*width+1, 0, i*width+1, getHeight(), hilitePaint);}//这个for循环是绘制四根醒目的线for(int i = 0; i<9; i++){if(i % 3 != 0){continue;}//绘制横线canvas.drawLine(0, i*height, getWidth(), i*height, darkPaint);canvas.drawLine(0, i*height+1, getWidth(), i*height+1, hilitePaint);//绘制纵线canvas.drawLine(i*width, 0, i*width, getHeight(), darkPaint);canvas.drawLine(i*width+1, 0, i*width+1, getHeight(), hilitePaint);}//绘制数字Paint numberPaint = new Paint();//设置文字的一系列属性numberPaint.setColor(Color.BLACK);numberPaint.setStyle(Paint.Style.STROKE);numberPaint.setTextSize(height*0.75f);numberPaint.setTextAlign(Paint.Align.CENTER);FontMetrics fontMetrics = numberPaint.getFontMetrics();float x = width/2;float y = height/2 - (fontMetrics.ascent+fontMetrics.descent)/2;for(int i=0; i<9; i++)for(int j=0; j<9; j++){canvas.drawText(game.getTitleString(i, j), i*width + x, j*height+y, numberPaint);}super.onDraw(canvas);}@Overridepublic boolean onTouchEvent(MotionEvent event){// TODO Auto-generated method stubif(event.getAction() != MotionEvent.ACTION_DOWN){return super.onTouchEvent(event);}selectX = (int)(event.getX()/width);selectY = (int)(event.getY()/height);int[] used = game.getUsedTile(selectX, selectY);StringBuffer sb = new StringBuffer();for(int i = 0; i<used.length; i++){sb.append(used[i]);}Log.i("TAG", sb.toString());KeyDialog keyDialog = new KeyDialog(this.getContext(), used, this);keyDialog.show();/*//定义一个layoutInflate对象，转载view文件LayoutInflater layoutInflater = LayoutInflater.from(this.getContext());View view = layoutInflater.inflate(R.layout.dialog, null);TextView textView = (TextView) view.findViewById(R.id.usedTextId);textView.setText(sb.toString());//创建对话框，弹出viewAlertDialog.Builder builder = new AlertDialog.Builder(this.getContext());builder.setView(view);AlertDialog dialog = builder.create();dialog.show();*/return true;}//View类接受KeyDialog传递过来的数据，调用业务逻辑Game类，进行处理public void setSelectTile(int tile){Log.i("TAG", game.setTileIfValid(selectX, selectY, tile)+""+tile);if(game.setTileIfValid(selectX,selectY,tile)){invalidate();//重新绘制View对象}}}

 在主类中调用MyView对象。

package com.mars.demo;import android.os.Bundle;
import android.app.Activity;public class MainActivity extends Activity
{@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);//setContentView(R.layout.activity_main);setContentView(new MyView(this));}}

 

通过上面数独游戏的学习，我了解了Paint类，Canvas类。我学习了一些绘制图形的基本知识，进一步巩固了一些android的基本知识。从中，我发现，作为一个程序员，一定要不断的去敲代码，勇于去实践，程序时敲出来的。很多时候，我们看别人写程序，感觉逻辑都很清晰，思路也不紊乱，但是，真正当自己去实践的时候，你会发现，其实并不是那么容易。当你出现问题的时候，你得尝试去调试，这样，我们才能不断成长。

程序员都是在调试Bug，调试错误中成长起来的。这是我非常赞同的一句话。在此，给自己一句勉励的话，希望自己在今后的学习日子中，不怕困难，用于去尝试。