title: File.delete() does not completely delete image blank image file left behind
body: <p>In my app you it takes a picture saves it to the SD card then user gets to chose what to do with it. Delete, save, or send. If you press delete. I call <code>File.delete()</code> it deletes the files when I go look in the gallery and then when I sometimes go back later I see a black image saying file cannot load. That image is the one I attempted to delete earlier. What is wrong with this and why doesn't it completely go away?</p>
  
  <p>How I save the image:</p>
  
  <pre><code>public static File getOutputMediaFile(byte[] data){
      image= BitmapFactory.decodeByteArray(data, 0, data.length);
      File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "FrontFlash");
      // Create the storage directory if it does not exist
      if (!mediaStorageDir.exists()){
          if (!mediaStorageDir.mkdirs()) return null;
      }
  
      // Create a media file name
      String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
      File mediaFile;
      mediaFile = new File(mediaStorageDir.getPath() + File.separator + "IMG_" + timeStamp + ".jpg");
      return mediaFile;
  }
  @Override
  public void onPictureTaken(byte[] data, Camera camera){
      pictureFile = Util.getOutputMediaFile(data);
      if (pictureFile == null){
          Toast.makeText(this, "Couldn't create file", Toast.LENGTH_SHORT).show();
      }
      else{
          try{
              FileOutputStream fos = new FileOutputStream(pictureFile);
              fos.write(data);
              fos.close();
          }
          catch (FileNotFoundException e){
              Toast.makeText(this, "File not found exception", Toast.LENGTH_SHORT).show();
          }
          catch (IOException e){
              Toast.makeText(this, "IO Exception", Toast.LENGTH_SHORT).show();
          }
      }
  
      sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "FrontCam"))));
      String photopath = pictureFile.getPath().toString();
  </code></pre>
  
  <p>//Rotates the image</p>
  
  <pre><code>bmp = BitmapFactory.decodeFile(photopath);
  matrix = new Matrix();
  matrix.postRotate(270);
  bmp = Bitmap.createBitmap(bmp, 0, 0, bmp.getWidth(), bmp.getHeight(), matrix, true);
      FileOutputStream fOut;
      try {
          fOut = new FileOutputStream(pictureFile);
          bmp.compress(Bitmap.CompressFormat.JPEG, 85, fOut);
          fOut.flush();
          fOut.close();
      } catch (FileNotFoundException e1) {
          // TODO Auto-generated catch block
          e1.printStackTrace();
      } catch (IOException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      }
  </code></pre>
  
  <p>where onClick where image is delete</p>
  
  <pre><code>public void exit( View view){
      deleted = pictureFile.delete();
      //startActivity(home);
      close();
      finish();
  }
  </code></pre>