Drawing an outer shadow when drawing an image

Question

I currently create a rounded version of an image in my app by drawing to a canvas. I would like to draw a faint outershadow around the image, but I cant quite get it right.

Answer 1

Create a xml name it round_shape.xml in drawable folder

Set this round_shape as back ground of image view like below

The above code create a thin layer around image view after you have round the bitmap , below function will do this

public Bitmap roundBit(Bitmap bm) {

        Bitmap circleBitmap = Bitmap.createBitmap(bm.getWidth(),
                bm.getHeight(), Bitmap.Config.ARGB_8888);

        BitmapShader shader = new BitmapShader(bm, TileMode.CLAMP,
                TileMode.CLAMP);
        Paint paint = new Paint();
        paint.setShader(shader);
        paint.setAntiAlias(true);
        Canvas c = new Canvas(circleBitmap);
        c.drawCircle(bm.getWidth() / 2, bm.getHeight() / 2, bm.getWidth() / 2,
                paint);

        return circleBitmap;
}