Image rotating method for restoring correct image rotations on devices with physically rotated camera

ImageRotationRestore.java

private Bitmap restoreRotation(File originalFile) throws IOException {
        int rotationAngle;

        ExifInterface ei = new ExifInterface(Uri.fromFile(originalFile).getPath());
        int orientation = ei.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
        switch (orientation) {
            case ExifInterface.ORIENTATION_ROTATE_90:
                rotationAngle = 90;
                break;
            case ExifInterface.ORIENTATION_ROTATE_180:
                rotationAngle = 180;
                break;
            case ExifInterface.ORIENTATION_ROTATE_270:
                rotationAngle = 270;
                break;
            default:
                rotationAngle = 0;
        }

        Bitmap imageToRotate = BitmapFactory.decodeFile(originalFile.getAbsolutePath());
        Matrix matrix = new Matrix();
        matrix.postRotate(rotationAngle);
        Bitmap rotatedBitmap = Bitmap.createBitmap(imageToRotate, 0, 0, imageToRotate.getWidth(), imageToRotate.getHeight(), matrix, true);
  
  return rotatedBitmap;