How to throw NetworkOnMainThreadException?

Question

I am creating some classes that do not implement threading logic but need to be used off the main thread, so I want to throw NetworkOnMainThreadException (or a similar one for DB operations) in their constructors. How do I do that? How do Android do that, can I find it somewhere in the source code?

do you see this link : http://stackoverflow.com/questions/6343166/android-os-networkonmainthreadexception — Paul, Jul 17 '15 at 07:24
This link is about how to avoid it, I dont want to avoid it but throw it — Kaloyan Roussev, Jul 17 '15 at 07:30
oh sorry i don't understand your question, but i read that a network connection is impossible on main thread no ? — Paul, Jul 17 '15 at 07:32
@Paul he wants to throw that exception if the runs on the UI Thread. — Blackbelt, Jul 17 '15 at 07:52

score 2 · Accepted Answer · answered Jul 17 '15 at 07:30

2

you could check the current's thread looper. E.g.

if (Looper.myLooper() == Looper.getMainLooper()) {
   throw new NetworkOnMainThreadException();
}

I would avoid it anyway. If I were in you I would document the method/class to clarify it has to be executed on an asynchronously

answered Jul 17 '15 at 07:30

Blackbelt

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I used to name these classes by appending "Synchronous" at the end of the name but I think it's ugly. – Kaloyan Roussev Jul 17 '15 at 07:34
then, probably you should thrown your custom exception – Blackbelt Jul 17 '15 at 07:47

How to throw NetworkOnMainThreadException?

1 Answers1