val matrix = Matrix()

            matrix.postRotate(90F)

            val bitmapOrg = (mainImage.drawable as BitmapDrawable).bitmap
            val scaledBitmap = Bitmap.createScaledBitmap(bitmapOrg, bitmapOrg.width, bitmapOrg.height, true)

            val rotatedBitmap =
                Bitmap.createBitmap(scaledBitmap, 0, 0, scaledBitmap.width, scaledBitmap.height, matrix, true)
            mainImage.setImageBitmap(rotatedBitmap)