ImageView from Uri only appearing after rotating the screen

Question

I've an app that displays a picture to its users. It sounds really simple, but I've been at it for days now trying to troubleshoot the exact problem. So what'll happen is that user will:

1. Click an image;
2. The image will be saved to the user's External Storage;
3. The image's Uri will be taken;
4. An ImageView will open the image with this Uri;
5. No image appeared, throws java.io.FileNotFoundException: /storage/emulated/....jpg: open failed: ENOENT (No such file or directory).

So I thought I didn't really pass the correct Uri and tried to troubleshoot from there. Then I accidentally rotated the screen and hey - my image is there! The the log file showed this when I rotated it a few times:

android.graphics.Bitmap@49361a20
android.graphics.Bitmap@495c42c8
android.graphics.Bitmap@496ac1e0
android.graphics.Bitmap@495b2b28

Is this displaying the memory location? Is it supposed to be different even after screen rotation?

With this information, is there anywhere else I should look into to solve this problem? I could rule out that the Uri is invalid, as it is showing the correct image after rotating the screen.

This is the code (of a utility class) involved to download the image clicked; This method seems to work well and the image is saved to the correct directory.

 public void downloadFile(String url) {
        File folder  = new File(Environment.getExternalStorageDirectory() + directory);
        String fileName = url.substring(url.lastIndexOf("/") + 1);
        String filePath = folder.getPath() + "/" + fileName;
        File file = new File(filePath);
        fileUri = Uri.fromFile(file);

        if (!folder.exists()) {
            Log.i(TAG, "Worka folder is not found, creating one now");
            folder.mkdir();
        } else {
            Log.i(TAG, "Worka folder is found");
            if (file.exists()) {
                Log.i(TAG, "Found a file with the same name, deleting/replacing it now");
                file.delete();
            }
        }

        DownloadManager downloadManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);

        Uri downloadUri = Uri.parse(url);
        DownloadManager.Request request = new DownloadManager.Request(downloadUri);

        request.setAllowedNetworkTypes(
                DownloadManager.Request.NETWORK_MOBILE | DownloadManager.Request.NETWORK_WIFI)
                //.setAllowedOverRoaming(false).setTitle("Roaming is not available")
                .setDestinationInExternalPublicDir(directory, fileName);

        downloadManager.enqueue(request);
        Log.i(TAG, "downloadFile() is successful, " + fileName + " is saved to Worka directory");
}

public Uri getFilePath() {
        return fileUri;
}

To make sure it gets passed from an activity to another activity;

FileDownload fileDownload = new FileDownload(getApplicationContext());
                fileDownload.downloadFile(conversation.getMessage());
                Uri fileUri = fileDownload.getFilePath();

                if (fileUri != null) {
                    Log.i(TAG, "fileUri: " + fileUri.toString());
                    Intent intent = new Intent(BulletinPostActivity.this, ImageViewingActivity.class);
                    intent.putExtra("imageUri", fileUri.toString());
                    startActivity(intent);

Finally, getting Bitmap from the passed Uri:

I then tried using AsyncTask here, to make sure the bitmap gets loaded properly... but I'm unsure what to code to accomplish this.

 public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    ...

    String imagePath = getIntent().getStringExtra("imageUri");
    imageUri = Uri.parse(imagePath);

    touchImageView = (TouchImageView) findViewById(R.id.image_viewing_image_view);

    if (imageUri != null) {
        new loadBitmap(imageUri).execute();
    }
}

public class loadBitmap extends AsyncTask<Void, Integer, Bitmap> {

    Uri uri;

    public loadBitmap(Uri uri) {
        this.uri = uri;
    }

    @Override
    protected Bitmap doInBackground(Void... params) {
        getBitmap();
        return bitmap;
    }

    public Bitmap getBitmap() {
        try {
            Log.i(TAG, "Attempting to get the bitmap from imageUri");
            bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), imageUri);
            Log.i(TAG, "Successfully gotten the bitmap from imageUri: " + bitmap);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return bitmap;
    }

    @Override
    protected void onPostExecute(Bitmap bitmap) {
        if (bitmap == null) {
            getBitmap();
        } else {
            touchImageView.setImageBitmap(bitmap);
        }
    }
}