How to generate a uniform size circle bitmap from different size image

Question

Currently I'm using this code..

            public static Bitmap getCircularBitmap(Bitmap bitmap, int borderWidth) {
            if (bitmap == null || bitmap.isRecycled()) {
                return null;
            }

            int width = bitmap.getWidth() + borderWidth;
            int height = bitmap.getHeight() + borderWidth;

            Bitmap canvasBitmap = Bitmap.createBitmap(width, height,Bitmap.Config.ARGB_8888);
            BitmapShader shader = new BitmapShader(bitmap, TileMode.CLAMP,  TileMode.CLAMP);
            Paint paint = new Paint();
            paint.setAntiAlias(true);
            paint.setShader(shader);

            Canvas canvas = new Canvas(canvasBitmap);
            float radius = width > height ? ((float) height) / 2f: ((float) width) / 2f;
            canvas.drawCircle(width / 2, height / 2, radius, paint);
            paint.setShader(null);
            paint.setStyle(Paint.Style.STROKE);
            paint.setColor(Color.WHITE);
            paint.setStrokeWidth(borderWidth);
            canvas.drawCircle(width / 2, height / 2, radius - borderWidth / 2,  paint);
            return canvasBitmap;
        }

Its returns a circular bitmap, but size of images getting different according to real image size.

A sample Image of app..

first profile image is smaller then second.

Please help me out.. Thanks.