protected void onGetImageError(String cacheKey,VolleyError error){
  BatchedImageRequest request=mInFlightRequests.remove(cacheKey);
  if (request != null) {
    request.setError(error);
    batchResponse(cacheKey,request);
  }
}

protected void onGetImageError ( String cacheKey , VolleyError error ) { BatchedImageRequest request = mInFlightRequests . remove ( cacheKey ) ; if ( request != null ) { request . setError ( error ) ; batchResponse ( cacheKey , request ) ; } }
handler for when an image failed to load .
