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What to return for an Async Task
getImage(); //Gets an image from the internet for an imageview
getJson();  //Where the app goes an parses a JSON object for a lazy load listview.

private class DownloadTask extends AsyncTask<String, Void, Object> {
protected Object doInBackground(String... args) {
    Log.i("MyApp", "Background thread starting");

    try {
        ImageView i = (ImageView) findViewById(R.id.currdoodlepic);
        Bitmap bitmap = BitmapFactory
                .decodeStream((InputStream) new URL(imageURL)
                        .getContent());
        i.setImageBitmap(bitmap);
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    getJson("all");

    return "replace this with your data object";
}

void postExecute(Object result); // AsyncTask method

ImageView mChart = (ImageView) findViewById(R.id.imageview);
String URL = "http://www...anything ...";

mChart.setTag(URL);
new DownloadImageTask.execute(mChart);

public class DownloadImagesTask extends AsyncTask<ImageView, Void, Bitmap> {

ImageView imageView = null;

@Override
protected Bitmap doInBackground(ImageView... imageViews) {
    this.imageView = imageViews[0];
    return download_Image((String)imageView.getTag());
}

@Override
protected void onPostExecute(Bitmap result) {
    imageView.setImageBitmap(result);
}


private Bitmap download_Image(String url) {
   ...
}