Загрузки изображений из сети в адаптере GridView - Программирование Android - Ответ 5607733

//..
        viewHolder.name.setText(arrayList.get(position).get("name"));
        viewHolder.icon.startAnimation(animation);
        viewHolder.script = arrayList.get(position).get("script");
        viewHolder.url_id = arrayList.get(position).get("url_id");
        viewHolder.id = arrayList.get(position).get("id");
        viewHolder.icon_lnk = arrayList.get(position).get("icon");
        
        ImageManager.fetchImage(viewHolder.icon_lnk, viewHolder.icon);
        
        return convertView;

public class ImageManager {
  private final static String TAG = "ImageManager";
 
  /** Private constructor prevents instantiation from other classes */
  private ImageManager () {}
 
  public static void fetchImage(final String iUrl, final ImageView iView) {
    if ( iUrl == null || iView == null )
      return;
 
    final Handler handler = new Handler() {
      @Override
      public void handleMessage(Message message) {
        final Bitmap image = (Bitmap) message.obj;
        iView.setImageBitmap(image);
      }
    };
 
    final Thread thread = new Thread() {
      @Override
      public void run() {
        final Bitmap image = downloadImage(iUrl);
        if ( image != null ) {
          Log.v(TAG, "Got image by URL: " + iUrl);
          final Message message = handler.obtainMessage(1, image);
          handler.sendMessage(message);
        }
      }
    };
    iView.setImageResource(R.drawable.wait);
    thread.setPriority(3);
    thread.start();
  }
 
  public static Bitmap downloadImage(String iUrl) {
    Bitmap bitmap = null;
    HttpURLConnection conn = null;
    BufferedInputStream buf_stream = null;
    try {
      Log.v(TAG, "Starting loading image by URL: " + iUrl);
      conn = (HttpURLConnection) new URL(iUrl).openConnection();
      conn.setDoInput(true);
      conn.setRequestProperty("Connection", "Keep-Alive");
      conn.connect();
      buf_stream = new BufferedInputStream(conn.getInputStream(), 8192);
      bitmap = BitmapFactory.decodeStream(buf_stream);
      buf_stream.close();
      conn.disconnect();
      buf_stream = null;
      conn = null;
    } catch (MalformedURLException ex) {
      Log.e(TAG, "Url parsing was failed: " + iUrl);
    } catch (IOException ex) {
      Log.d(TAG, iUrl + " does not exists");
    } catch (OutOfMemoryError e) {
      Log.w(TAG, "Out of memory!!!");
      return null;
    } finally {
      if ( buf_stream != null )
        try { buf_stream.close(); } catch (IOException ex) {}
      if ( conn != null )
        conn.disconnect();
    }
    return bitmap;
  }
}