BitmapUtils.java

class BitmapUtils {

    public static int getRotationFromFileUri(Context context, Uri contentUri) {
        String filepath = contentUri.getPath();
        ExifInterface exifData = null;
        try {
            exifData = new ExifInterface(filepath);
            int orientation = exifData.getAttributeInt(ExifInterface.TAG_ORIENTATION, 1);
            return exifToDegrees(orientation);
        } catch (IOException e) {
        } catch (IllegalArgumentException e) {
        } catch (Exception e) {
        }
        return 0;
    }
    
    private static int exifToDegrees(int exifOrientation) {
        if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_90) {
            return 90;
        } else if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_180) {
            return 180;
        } else if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_270) {
            return 270;
        }
        return 0;
    }
    
}