Android游戏开发之数独课时----3

第一步：线条的颜色

在绘制九宫格的时候，需要用到颜色。为了达到颜色的复用。利用xml文件定义：

<?xml version="1.0" encoding="utf-8"?>

<resources>

<color name="shudu_background">#ffe6f0ff</color>

<color name="shudu_hilite">#ffffffff</color>

<color name="shudu_light">#64c6d4ef</color>

<color name="shudu_dark">#6456648f</color>

</resources>

第二步：绘制线条

为了达到绘制的效果，需要一条亮线和一条暗线合二为一。

package com.example.shudu_1;

import android.content.Context;

import android.graphics.BitmapFactory;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.support.v4.view.PagerAdapter;

import android.text.style.LineHeightSpan.WithDensity;

import android.view.View;

public class MyView extends View {

//设置单元格的宽度和高度

private float width;

private float height;

//需要这个构造函数，不然会报错

public MyView(Context context) {

super(context);

}

@Override

protected void onSizeChanged(int w, int h, int oldw, int oldh) {

//计算当前单元格的高度和宽度

this.width=w/9f;

this.height=h/9f;

super.onSizeChanged(w, h, oldw, oldh);

}

@Override

protected void onDraw(Canvas canvas) {

//生成用于绘制背景色的画笔

Paint backgroundPaint=new Paint();

//设置背景的颜色

backgroundPaint.setColor(getResources().getColor(R.color.shudu_background));

//绘制背景色

canvas.drawRect(0, 0, getWidth(), getHeight(), backgroundPaint);

Paint darkPain=new Paint();

darkPain.setColor(getResources().getColor(R.color.shudu_dark));

Paint hiliPaint=new Paint();

hiliPaint.setColor(getResources().getColor(R.color.shudu_hilite));

Paint lightPaint=new Paint();

lightPaint.setColor(getResources().getColor(R.color.shudu_light));

for(int i=0;i<9;++i){

//以下两行代码用户绘制横向的单元格

//明线和黑线才能合成一条像雕刻的线，两条线中间有间隔。

canvas.drawLine(0, i*height, getWidth(), i*height,lightPaint);

canvas.drawLine(0, i*height+1, getWidth(), i*height+1,hiliPaint);

//纵向

canvas.drawLine(i*width, 0, i*width, getHeight(), lightPaint);

canvas.drawLine(i*width+1, 0, i*width+1, getHeight(), hiliPaint);

}

//绘制黑线

for(int i=0;i<9;++i){

if(i%3!=0){

continue;

}

//以下两行代码用户绘制横向的单元格

//明线和黑线才能合成一条雕刻的线

canvas.drawLine(0, i*height, getWidth(), i*height,darkPain);

canvas.drawLine(0, i*height+1, getWidth(), i*height+1,hiliPaint);

//纵向

canvas.drawLine(i*width, 0, i*width, getHeight(), darkPain);

canvas.drawLine(i*width+1, 0, i*width+1, getHeight(), hiliPaint);

}

//绘制文字

Paint numberPain=new Paint();

numberPain.setColor(Color.BLACK);

numberPain.setStyle(Paint.Style.STROKE);

numberPain.setTextSize(height*0.75f);

numberPain.setTextAlign(Paint.Align.CENTER);

float x=width/2;

canvas.drawText("1", 3*width+x, 61, numberPain);

super.onDraw(canvas);

}

}