Draw circle over the bitmap with the color same as the under bitmap

Question

I have an image, I can draw an circle over it like the code below:

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);

And the circle will be red color! But because of some reason, I want the color of circle same as its under bitmap. Can I do it? and how? Thanks everyone!

Edited: One more question, How I can get all the pixels inside circle?

score 0 · Answer 1 · answered Aug 27 '12 at 07:26

0

why dont you simply remove the paint.setStyle(Style.STROKE.FILL); or try changing the paint.setColor(Color.RED); to Transparent color, that should be it

answered Aug 27 '12 at 07:26

Anuj

2,065
22
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Actually, I want to use some effect with the `circle` which will be drawn! Such as blurring the `circle`... – Kingfisher Phuoc Aug 27 '12 at 07:34
try using `paint.setStyle(Paint.Style.STROKE);` instead of your own Style, see if it works for you – Anuj Aug 27 '12 at 07:42
It's no use! If I try to use `paint.setColor(Color.TRANSPARENT)`, there's no effect when i use `blur` for `circle` – Kingfisher Phuoc Aug 27 '12 at 08:48

score 0 · Answer 2 · edited May 23 '17 at 12:32

0

you can get the color of a specified pixel by the method in this article and then make a RGB Color then set this color instead of the color.RED you mentioned.

edited May 23 '17 at 12:32

Community

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1

answered Aug 27 '12 at 07:54

SAbbasizadeh

730
10
25

Yes, but how to get all the pixels inside the `circle`? – Kingfisher Phuoc Aug 27 '12 at 08:50

Draw circle over the bitmap with the color same as the under bitmap

2 Answers2