try {
         //send data, return data
    }
    catch( IOException ioe){
        return ioe;
    }
    catch (Exception e) {
        return e;
    }

if (requestObject instanceof String) {
            //everything went alright

        }
        else if( requestObject instanceof IOException){
            Toast.makeText(this, "Unable to send data. Please retry later", Toast.LENGTH_SHORT);
        }
        else if (requestObject instanceof Exception) {
            Toast.makeText(this, ((Exception) requestObject).getMessage(), Toast.LENGTH_SHORT);
        }