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Question 96

Which of the following is NOT true about class AsyncTask?

It must be used by sub-classing it.

It must be created on the UI thread.

Its sub-class override at least two methods: doInBackground, onPostExecute.

It uses three generic types.

Correct Answer: B

Class AsyncTask does not need to be created on the UI thread. AsyncTask should be executed on the UI thread through its execute() method, but its instance can be created on any thread. The other statements about subclassing, method overrides, and generic types are correct.

Discussion

MmadiOption: C

C. Its sub-class override at least two methods: doInBackground, onPostExecute.