Interview Questions

The following questions will help you to consolidate what is covered in this chapter:

1. When do you use an async task?
2. How does an async task improve upon using a handler to do the same thing?
3. What are the three generic types used by an async task?
4. What method of AsyncTask runs on the worker thread?
5. Can you issue a Toast from the doInBackground() method?
6. From what method can you report progress back to the main thread?
7. How do you start work on an async task? What method do you call?
8. Can you call execute() twice on an async task?
9. Do multiple async tasks  issued by the main thread run simultaneously?
10. What is the role of thread pools on async tasks?
11. What is an orphan pointer?
12. How do you reestablish a link to the activity when the device rotates?