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Jason Thorn
2,611 PointsUsing AsyncTask
Hi all, I' ve been playing around with the blog reader and I've got a question about the AsyncTask - hopefully an easily answered one :).
I've scanned through the documentation and it says 'execute' should only be called once, otherwise an exception will be thrown. So if I wanted implement some sort of refresh method that checks for new posts at say the touch of a button, how would I get the code in 'doInBackgroud' to run again without calling it directly?
2 Answers
Ben Jakuben
Treehouse TeacherEach instance can only be run once, but you can create a new instance to run another task. I wrote the BlogReader one as two lines for clarity, but check out this example of executing it from a new instance every time
Jason Thorn
2,611 PointsHi Ben, thanks for the response!
After pondering for on it for a bit I ended up doing exactly that! I also added a boolean flag too that gets set to true just before the execute is called, to signify if the previous thread is busy (true). Then in onPostExecute() I can set the flag to false showing the task had completed.
That way I can stop users from overloading on the Http requests (and using up my api requests)