Html.ImageGetter

public class URLImageParser implements Html.ImageGetter {
    private Context c;
    private View container;


    private static int DEVWIDTH = -1;


    /***
     * Construct the URLImageParser which will execute AsyncTask and refresh the container
     * @param t
     * @param c
     */
    public URLImageParser(View t, Context c) {
        this.c = c;
        this.container = t;


        if (DEVWIDTH == -1) {
            DEVWIDTH = SplashScreen.getDeviceWidth();
        }
    }


    public Drawable getDrawable(String source) {
        URLDrawable urlDrawable = new URLDrawable();


        // get the actual source
        ImageGetterAsyncTask asyncTask = new ImageGetterAsyncTask(urlDrawable);


        asyncTask.execute(source);


        return urlDrawable;
    }


    public class ImageGetterAsyncTask extends AsyncTask<String, Void, Drawable> {
        URLDrawable urlDrawable;


        public ImageGetterAsyncTask(URLDrawable d) {
            this.urlDrawable = d;
        }


        @Override
        protected void onPreExecute() {
            setDrawableBounds(urlDrawable);
        }


        @Override
        protected Drawable doInBackground(String... params) {
            String source = params[0];
            return fetchDrawable(source);
        }


        @Override
        protected void onPostExecute(Drawable result) {
            // set the correct bound according to the result from HTTP call
            setDrawableBounds(result);


            // change the reference of the current drawable to the result
            // from the HTTP call
            urlDrawable.setDrawable(result);


            // redraw the image by invalidating the container
            URLImageParser.this.container.invalidate();
        }


        /***
         * Get the Drawable from URL
         * @param urlString
         * @return
         */
        public Drawable fetchDrawable(String urlString) {
            try {
                InputStream is = fetch(urlString);
                Drawable drawable = Drawable.createFromStream(is, "src");
                setDrawableBounds(drawable);
                return drawable;
            } catch (Exception e) {
                return null;
            } 
        }


        private void setDrawableBounds(Drawable d) {
            Double width = Double.valueOf(d.getIntrinsicWidth());
            Double height = Double.valueOf(d.getIntrinsicHeight());


            Double newWidth = 0 + width;
            Double newHeight = 0 + height;


            if (height != 0 && width != 0) {
                Double ratio = height / width;


                newWidth = Double.valueOf(DEVWIDTH);
                newHeight = newWidth * ratio;
            }


            d.setBounds(0, 0, newWidth.intValue(), newHeight.intValue());
        }


        private InputStream fetch(String urlString) throws IOException {
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpGet request = new HttpGet(urlString);
            HttpResponse response = httpClient.execute(request);
            return response.getEntity().getContent();
        }
    }
}