我应该使用getApplicationContext还是活动。在长时间运行的异步任务中

I have a long running Async Task that sends some data to my server and then stops. The whole process may involve a few requests and response. I have to read data from database, send it and handle the response and update my database accordingly. I am using content providers to read and update data from database.I have a long running Async Task that sends som