android绘制几何图形的实例代码

概述本文实例为大家分享了android绘制几何图形展示的具体代码，供大家参考，具体内容如下

本文实例为大家分享了androID绘制几何图形展示的具体代码，供大家参考，具体内容如下

效果图：

代码（仅绘制类，不可直接运行）：

public class MyVIEw extends VIEw {   public MyVIEw(Context context,AttributeSet set)   {     super(context,set);   }   @OverrIDe   // 重写该方法，进行绘图   protected voID onDraw(Canvas canvas)   {     super.onDraw(canvas);     // 把整张画布绘制成白色     canvas.drawcolor(color.WHITE);     Paint paint = new Paint();//创建一个画笔对象     // 去锯齿     paint.setAntiAlias(true);     paint.setcolor(color.BLUE);//设置画笔颜色为蓝色     paint.setStyle(Paint.Style.stroke);//设置样式     paint.setstrokeWIDth(3);//设置样式的宽度     // 绘制圆形     canvas.drawCircle(40,40,30,paint);     // 绘制正方形     canvas.drawRect(10,80,70,140,paint);     // 绘制矩形     canvas.drawRect(10,150,190,paint);     RectF re1 = new RectF(10,200,230);     // 绘制圆角矩形     canvas.drawRoundRect(re1,15,paint);     RectF re11 = new RectF(10,240,270);     // 绘制椭圆     canvas.drawoval(re11,paint);         // 定义一个Path对象，封闭成一个三角形。     Path path1 = new Path();     path1.moveto(10,340);//将路径点设置到10，340位置     path1.lineto(70,340);//将起始路径点连接都70,340位置     path1.lineto(40,290);//将第二连接点连接到40,290位置     path1.close();//关闭路径的绘制     // 根据Path进行绘制，绘制三角形     canvas.drawPath(path1,paint);     // 定义一个Path对象，封闭成一个五角形。     Path path2 = new Path();     path2.moveto(26,360);     path2.lineto(54,360);     path2.lineto(70,392);     path2.lineto(40,420);     path2.lineto(10,392);     path2.close();     // 根据Path进行绘制，绘制五角形     canvas.drawPath(path2,paint);     // ----------设置填充风格后绘制----------     paint.setStyle(Paint.Style.FILL);     paint.setcolor(color.RED);     canvas.drawCircle(120,paint);     //绘制正方形     canvas.drawRect(90,paint);     //绘制矩形     canvas.drawRect(90,paint);     RectF re2 = new RectF(90,230);     //绘制圆角矩形     canvas.drawRoundRect(re2,paint);     RectF re21 = new RectF(90,270);     // 绘制椭圆     canvas.drawoval(re21,paint);         Path path3 = new Path();     path3.moveto(90,340);     path3.lineto(150,340);     path3.lineto(120,290);     path3.close();     //绘制三角形     canvas.drawPath(path3,paint);     Path path4 = new Path();     path4.moveto(106,360);     path4.lineto(134,360);     path4.lineto(150,392);     path4.lineto(120,420);     path4.lineto(90,392);     path4.close();     //绘制五角形     canvas.drawPath(path4,paint);     // ----------设置渐变器后绘制----------     // 为Paint设置渐变器     Shader mShader = new linearGradIEnt(0,60,new int[] {       color.RED,color.GREEN,color.BLUE,color.YELLOW },null,Shader.TileMode.REPEAT);     paint.setShader(mShader);     //设置阴影     paint.setShadowLayer(45,10,color.GRAY);     // 绘制圆形     canvas.drawCircle(200,paint);     // 绘制正方形     canvas.drawRect(170,230,paint);     // 绘制矩形     canvas.drawRect(170,paint);     RectF re3 = new RectF(170,230);     // 绘制圆角矩形     canvas.drawRoundRect(re3,paint);     RectF re31 = new RectF(170,270);     // 绘制椭圆     canvas.drawoval(re31,paint);         Path path5 = new Path();     path5.moveto(170,340);     path5.lineto(230,340);     path5.lineto(200,290);     path5.close();     // 根据Path进行绘制，绘制三角形     canvas.drawPath(path5,paint);     Path path6 = new Path();     path6.moveto(186,360);     path6.lineto(214,360);     path6.lineto(230,392);     path6.lineto(200,420);     path6.lineto(170,392);     path6.close();     // 根据Path进行绘制，绘制五角形     canvas.drawPath(path6,paint);     // ----------设置字符大小后绘制----------     paint.setTextSize(24);     paint.setShader(null);     // 绘制7个字符串     canvas.drawText(getResources().getString(R.string.circle),50,paint);     canvas.drawText(getResources().getString(R.string.square),120,paint);     canvas.drawText(getResources().getString(R.string.rect),175,paint);     canvas.drawText(getResources().getString(R.string.round_rect),220,paint);     canvas.drawText(getResources().getString(R.string.oval),260,paint);         canvas.drawText(getResources().getString(R.string.triangle),325,paint);     canvas.drawText(getResources().getString(R.string.pentagon),390,paint);   } } 

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