title: Gallery Thumbnails are not being updated
body: <p>So Here's the scenario</p>
  
  <p>Iterate through a folder, and replace all the images with another set of images.</p>
  
  <p>What I expect : Image to be updated in my gallery as well as it's thumbnail.</p>
  
  <p>What I get : When I open my gallery the old image thumbnail is still there. When I open the image, the replaced version of that image appears. And to make it even stranger, some of the images, when you open them, there is a quick flash of the previous original image, followed by the replaced version, and if you zoom in on that photo, "surprise" it's the old photo again (Note : this is only with some images. - Not all).
  All images though, doesn't have an updated thumbnail.</p>
  
  <p>Give it 10 minutes and bam!, all images has been refreshed with no trace of the old original ones.</p>
  
  <p>No clue why it doesn't do it instantaneously.</p>
  
  <p>I Have also followed the instructions here. But the same problem persist.<a href="https://stackoverflow.com/questions/9414955/trigger-mediascanner-on-specific-path-folder-how-to">Trigger scan whole folder</a> Latest API doesn't allow scanning for whole folder besides the system doing that, since some apps scanned a folder because just one image changed thus draining battery life. </p>
  
  <p>My Code</p>
  
  <pre><code>//originalImagesList is the list of filepaths for all the images in a specific folder
  for (String s :originalImagesList)
  {
      try
      {
          File checkIfFile = new File(s);
          //replacementAppImg contains a list of images used to replace other images with
          Log.v(TAG, "Moving file From Replace - " + replacementAppImg.get(1));
          Log.v(TAG, "Moving file to Replace - " + s);
  
          InputStream in = new FileInputStream(replacementAppImg.get(1)); //From where
          OutputStream out = new FileOutputStream(s); //To where
  
          //Copy the bits from instream to outstream
          byte[] buf = new byte[1024];
          int len;
          while ((len = in.read(buf)) &gt; 0) {
              out.write(buf, 0, len);
          }
          in.close();
          out.close();
  
          Intent mediaScannerIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
          //checkIfFile is the new replaces image that i want to refresh/check
          Uri fileContentUri = Uri.fromFile(checkIfFile);
          mediaScannerIntent.setData(fileContentUri);
          CustomSettings.getCustomAppContext().sendBroadcast(mediaScannerIntent);
      } catch (Exception ex) {
          Log.v(TAG2,"Exception 1 - "  + ex.toString());
      }
  }
  </code></pre>