android 画虚线,虚线圆

Paint paint = new Paint();

paint.setAntiAlias(true);

paint.setStyle(Paint.Style.STROKE);  

paint.setColor(Color.BLUE);

PathEffect effects = new DashPathEffect(new float[]{5,5,5,5},1);  

paint.setPathEffect(effects);

canvas.drawCircle(202, 202, 100, paint);

canvas.drawLine(0, 0, 400, 400, paint);