title: Effect shadow in rectangle canvas
body: <p>I have drawn a rectangle with canvas and I wonder if there is any property or way of giving a small shadow.</p>
  
  <pre><code>protected void onDraw(Canvas canvas) {
      super.onDraw(canvas);
      Paint pincel1 = new Paint();
      pincel1.setColor(Color.rgb(151, 217, 69));
      RectF rectangle = new RectF(30, 20,200,100);
      canvas.drawRoundRect (rectangle, 6, 6, pincel1);
  }
  </code></pre>
  
  <p>Thanks</p>