Async UI update, concurrency - android

Question

I have an Thread running and i set a listener to know when the job is done, in my listener i have a method onCompleted which returns me some data i use to update my UI elements. Some times i get NPEs, i think because the user changes Activity or something similar.

I tried using NULL checks but it is pretty annoying to do every time.

Now i want to ask if somebody knows an easy way to avoid this instead of place null checks into my code?

Answer 1

看一看AsyncTask类，该类专门设计用于Activity和UI线程。