【随心笔录】绘制一个好看的圆环

来源：互联网发布：淘宝给差评会怎么样编辑：程序博客网时间：2024/05/01 02:28

预期效果图：

起初一看，毫无头脑，然后随便自定义一个View，重新draw（）方法。

 @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        Paint mPaint = new Paint();        mPaint.setStrokeWidth(3);        mPaint.setColor(Color.BLUE);        mPaint.setAntiAlias(true); //消除锯齿        mPaint.setStyle(Paint.Style.STROKE); //绘制空心圆//        int width = getWidth() / 2;//        int height = getHeight() / 2;//        int radius = width;////        for (int i = 0; i < 300; i++) {//            if (i % 2 == 1) {//                mPaint.setColor(Color.WHITE);//            } else {//                mPaint.setColor(Color.BLACK);//            }//            LogUtils.setTag(TAG, "i=" + i);//            if (radius >= 1) {//                canvas.drawCircle(width, height, radius, mPaint);//            } else {//                break;//            }//            radius = (int) (radius * 0.96f);//        }        int width = getWidth() / 2;        int height = getHeight() / 2;        int radius = width - 20;        canvas.translate(width, height);//        canvas.drawCircle(0, 0, radius, mPaint);        //大小圆 相隔14px//        mPaint.setColor(Color.BLUE);//        canvas.drawCircle(0, 0, radius - 30, mPaint);        mPaint.setColor(Color.BLUE);        mPaint.setStrokeWidth(10);        for (int i = 0; i < 360; i += 6) {            //每隔10度切一下            canvas.drawLine(0, radius - 50, 0, radius, mPaint);            canvas.rotate(6);        }    }

然后运行，看了下效果图：

突然感觉没有那么难了。

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