android 用paint，canvas 绘图_cavas 画圆角 paint.setstrokejoin(paint.join.round);-优快云博客

本文链接：https://blog.youkuaiyun.com/liuzuyi200/article/details/24602133

本文介绍了一种使用Android平台的Canvas和Paint类来绘制中国象棋棋盘的方法。通过细致地绘制横纵线条和特定的图案，实现了棋盘及棋位的可视化呈现。文章还展示了如何在棋盘上标记棋子的位置。

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（1）主要用了paint ，canvas 两个类中的方法

（2）主要用了画线和画圆的方法。

（3）drawline（起始点轴坐标，起始点y轴坐标，终点轴坐标，终点y轴坐标）

（4）drawcircle（圆心x轴坐标，圆心y轴坐标，半径，画布）

效果图：

直接上代码了：

package com.example.drawpicture;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.View;

class Customview1 extends View
{  
		Paint  paint;
	    public Customview1(Context context) {
		super(context);
		paint = new Paint();
		paint.setColor(Color.BLACK);
		paint.setStrokeJoin(Paint.Join.ROUND);
		paint.setStrokeCap(Paint.Cap.ROUND);
		paint.setStrokeWidth(3);
		paint.setTextSize(40);//设置字体大小
	}
	 protected void onDraw(Canvas canvas)
	    {
		  //横线 
		   //top
		   canvas.drawLine(30, 30, 450,30, paint);    
		   canvas.drawLine( 30, 100, 450,100, paint); 
		   canvas.drawLine( 30, 170, 450,170, paint);
		   canvas.drawLine( 30, 240, 450,240, paint);
		   canvas.drawLine( 30, 310, 450,310, paint);
		   // bottom
		   
		   canvas.drawText(" 楚   河 ", 65, 355, paint);//使用画笔paint
		   canvas.drawText(" 汉  界  ", 320,355 , paint);//使用画笔paint
		   canvas.drawLine(30, 380, 450,380, paint);    
		   canvas.drawLine( 30, 450, 450,450, paint); 
		   canvas.drawLine( 30, 520, 450,520, paint);
		   canvas.drawLine( 30, 590, 450,590, paint);
		   canvas.drawLine( 30, 660, 450,660, paint);
		  //竖线
		   
		   //left
		   canvas.drawLine(30, 30,30,660, paint);
		   canvas.drawLine(83, 30, 83,310, paint);
		   canvas.drawLine(136, 30, 136,310, paint);
		   canvas.drawLine(189, 30, 189,310, paint);
		   canvas.drawLine(242, 30, 242,310, paint);
		   canvas.drawLine(294, 30, 294,310, paint);
		   canvas.drawLine(347, 30, 347,310, paint);
		   canvas.drawLine(398, 30, 398,310, paint);
		   
		   //right
		 
		   canvas.drawLine(83, 380, 83,660, paint);
		   canvas.drawLine(136, 380, 136,660, paint);
		   canvas.drawLine(189, 380, 189,660, paint);
		   canvas.drawLine(242, 380, 242,660, paint);
		   canvas.drawLine(294, 380, 294,660, paint);
		   canvas.drawLine(347, 380, 347,660, paint);
		   canvas.drawLine(398, 380, 398,660, paint);
		   
		   canvas.drawLine(450,30 ,450,660, paint);
		   //大营
		   canvas.drawLine(189, 30, 294,170, paint);
		   canvas.drawLine(294, 30, 189,170, paint);
		   canvas.drawLine(189,520, 294,660, paint);
		   canvas.drawLine(294,520, 189,660, paint);
		   
		   //topcircle
		   
		   canvas.drawCircle(450, 240,20, paint);
		   canvas.drawCircle(346, 240,20, paint);
		   canvas.drawCircle(242, 240,20, paint); 
		   
		   canvas.drawCircle(396, 170,20, paint);
		   canvas.drawCircle(450, 30,20, paint);
		   canvas.drawCircle(396, 30,20, paint);
		   canvas.drawCircle(346, 30,20, paint);
		   canvas.drawCircle(294, 30,20, paint);
		   canvas.drawCircle(242, 30,20, paint);  
		   canvas.drawCircle(189, 30,20, paint);
		   canvas.drawCircle(135, 30,20, paint);
		   canvas.drawCircle(83, 30,20, paint);
		   canvas.drawCircle(30, 30,20 , paint);
		   canvas.drawCircle(83, 170,20, paint);
		   
		   canvas.drawCircle(135, 240,20, paint);
		   canvas.drawCircle(30, 240,20, paint);
		   
		   //bottomcircle
		   canvas.drawCircle(450, 450,20, paint);
		   canvas.drawCircle(346, 450,20, paint);
		   canvas.drawCircle(242, 450,20, paint); 
		   
		   canvas.drawCircle(396, 520,20, paint);
		   canvas.drawCircle(450, 660,20, paint);
		   canvas.drawCircle(396, 660,20, paint);
		   canvas.drawCircle(346, 660,20, paint);
		   canvas.drawCircle(294, 660,20, paint);
		   canvas.drawCircle(242, 660,20, paint);
		   canvas.drawCircle(189, 660,20, paint);
		   canvas.drawCircle(135, 660,20, paint);
		   canvas.drawCircle(83, 660,20, paint);
		   canvas.drawCircle(30, 660,20, paint);
		   canvas.drawCircle(83, 520,20, paint);
		   
		   canvas.drawCircle(135, 450,20, paint);
		   canvas.drawCircle(30, 450,20, paint);
		   paint.setColor(Color.RED);
		   
		   paint.setTextSize(20);
		   
		   canvas.drawText("兵", 21,458, paint);
		   canvas.drawText("兵", 127,458, paint);
		   canvas.drawText("兵", 232,458 , paint);
		   canvas.drawText("炮", 388,527, paint);
		   canvas.drawText("车", 440,668 , paint);
		   canvas.drawText("馬", 388,668 , paint);
		   canvas.drawText("象", 335,668 , paint);
		   canvas.drawText("仕", 285,668 , paint);
		   canvas.drawText("帥", 232,668 , paint);
		   canvas.drawText("仕", 180,668 , paint);
		   canvas.drawText("象", 127,668 , paint);
		   canvas.drawText("馬", 72,668 , paint);
		   canvas.drawText("车", 21,668 , paint);
		   canvas.drawText("炮", 72, 527, paint);
		   canvas.drawText("兵", 335,458 , paint);
		   canvas.drawText("兵", 440,458, paint);
		   
		   
	
		   canvas.drawText("卒", 21,245, paint);
		   canvas.drawText("卒", 127,245, paint);
		   canvas.drawText("卒", 232,245 , paint);
		   canvas.drawText("炮", 72, 177, paint);
		   canvas.drawText("车", 21,35 , paint);
		   canvas.drawText("馬", 72,35 , paint);
		   canvas.drawText("象", 127,35 , paint);
		   canvas.drawText("士", 180,35 , paint);
		   canvas.drawText("将", 232,35 , paint);
		   canvas.drawText("士", 285,35 , paint);
		   canvas.drawText("象", 335,35 , paint);
		   canvas.drawText("馬", 388,35 , paint);
		   canvas.drawText("车", 440,35 , paint);
		   canvas.drawText("炮", 388, 177, paint);
		   canvas.drawText("卒", 335,247 , paint);
		   canvas.drawText("卒", 440,247, paint);
		     
		   
	    }   
	  
}