Android Exif rotation.

ExifRotationBitmap.java

private Bitmap getBitmap(@NonNull File file) {
    int exifRotation = getExifRotation(file);
    if (exifRotation != 0) {
        Matrix matrix = new Matrix();
        matrix.postRotate(exifRotation);

        Bitmap rotatedBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
        if (!bitmap.isRecycled()) {
            bitmap.recycle();
        }
        bitmap = rotatedBitmap;
    }
    retirm bitmap
}

private static int getExifRotation(@NonNull File imageFile) {
    if (imageFile == null) return 0;
    try {
        ExifInterface exif = new ExifInterface(imageFile.getAbsolutePath());
        switch (exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED)) {
            case ExifInterface.ORIENTATION_ROTATE_90:
                return 90;
            case ExifInterface.ORIENTATION_ROTATE_180:
                return 180;
            case ExifInterface.ORIENTATION_ROTATE_270:
                return 270;
            default:
                return 0;
        }
    } catch (IOException e) {
        Log.e(TAG, "Error getting Exif data", e);
        return 0;
    }
}