title: Draw circle over the bitmap with the color same as the under bitmap
body: <p>I have an <code>image</code>, I can draw an <code>circle</code> over it like the code below:</p>
  
  <pre><code>Bitmap bitmap = BitmapFactory.decodeResource(getResources(),
              R.drawable.girl).copy(Bitmap.Config.ARGB_8888, true);
  Canvas canvas = new Canvas(bitmap);
  Paint paint = new Paint();
  paint.setColor(Color.RED);
  paint.setStrokeWidth(200);
  paint.setStyle(Style.STROKE.FILL);
  paint.setAntiAlias(true);
  canvas.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2, 100,
              paint);
  </code></pre>
  
  <p>And the <code>circle</code> will be red color! But because of some reason, I want the color of <code>circle</code> same as its under <code>bitmap</code>. Can I do it? and how? Thanks everyone!</p>
  
  <p>Edited: One more question, How I can get all the pixels inside <code>circle</code>?</p>