gistfile1.txt

public class MessagingActivity implements SendMessageCallbacks extends Activity {

    //activity setup methods

    public void sendMessage(){
        new SendMessageTask(httpClient, this).execute();
    }

    @Override
    protected void onMessageSendingFailed(String reason) {
        //To something
    }

    @Override
    protected void onMessageSendingSuccess(String reason) {
        //To something else
    }

}