How to use Asynctask for bitmap?

Issue

I'm taking the image from my mp3 files to a Bitmap[] but it causes the application to stop a bit and I'm wanting to use Asynctask to make it smoother.

This is the way I got the bitmap :

  Bitmap[] bm = new Bitmap[mySongs.size()];       
  for (int i = 0; i < mySongs.size(); i++) {
        if (mySongs.size() > 0) {
        u = Uri.parse(mySongs.get(i).toString());
        mediaMetadataRetriever = new MediaMetadataRetriever();
        mediaMetadataRetriever.setDataSource(getApplicationContext(), u);      
        byte[] artBytes = mediaMetadataRetriever.getEmbeddedPicture();  
        if(artBytes != null) {
            InputStream is = new ByteArrayInputStream(mediaMetadataRetriever.getEmbeddedPicture());
            bm[i] = BitmapFactory.decodeStream(is);         
        }  
   }

How to put it in Asynctask?

Solution

This is what your implementation would look like:

  AsyncTask myAsyncTask = new AsyncTask() {
    @Override
    protected Object doInBackground(Object[] objects) {
      //ToDo: Do all the work in here and return result as object
      return null;
    }

    @Override
    protected void onPostExecute(Object o) {
      super.onPostExecute(o);
      //ToDo: Do whatever you want to do with the result in here
    }
  }

---

I would suggest creating a static class that extends AsyncTask or do not pass any context in here or memory leaks might occur

Answered By - Napster