title: Trigger mediascanner on specific path (folder), how to?
body: <p>I got this class:</p>
  
  <pre><code>import android.content.Context;
  import android.media.MediaScannerConnection;
  import android.net.Uri;
  import android.util.Log;
  
  public class MediaScannerWrapper implements  
  MediaScannerConnection.MediaScannerConnectionClient {
      private MediaScannerConnection mConnection;
      private String mPath;
      private String mMimeType;
  
  
      // filePath - where to scan; 
      // mime type of media to scan i.e. "image/jpeg". 
      // use "*/*" for any media
      public MediaScannerWrapper(Context ctx, String filePath, String mime){
          mPath = "/sdcard/DCIM/Camera";
          mMimeType = "jpg";
          mConnection = new MediaScannerConnection(ctx, this);
      }
  
      // do the scanning
      public void scan() {
          mConnection.connect();
      }
  
      // start the scan when scanner is ready
      public void onMediaScannerConnected() {
          mConnection.scanFile(mPath, mMimeType);
          Log.w("MediaScannerWrapper", "media file scanned: " + mPath);
      }
  
      public void onScanCompleted(String path, Uri uri) {
          // when scan is completes, update media file tags
      }
  }
  </code></pre>
  
  <p>How to use it in the other class?
  I don't know how to properly use classes, I tried but nothing is working.
  I do something wrong, but I don't know what, can someone help me with this.</p>