I just found out about NetworkOnMainThreadException at official docs

and was wondering if the emulator is throwing this. I have been testing my app quite a bit and as far as I know all networking is off the main thread (using Roboguice RoboAsyncTask) but you never know if one has not escaped.

I am also using StrictMode and have not seen anything.

  1. Is my code just clean or is this not thrown on the emulator?

  2. How are we supposed to prepare for this happening in production?

  3. What about a grace period or something? Or is that elapsed now ;-) ??


With honeycomb you can not perform a networking operation on its main thread as documentation says. For this reason you must use handler or asynctask. There is no another way to do it.

here you can find 2 examples written in turkish about networking operation. maybe they help.

  • 3. party kütüphane kullanmadan (ksoap2), (it includes english translation)

  • AsyncTask class'tan dönen parametreyi handle etmek. , google translate


I have tested this and it does in fact happen on the emulator as well. Better make sure you test your app at least on the emulator if you plan to get it onto the 3.0 tablets and beyond.


NetworkOnMainThreadException occurs when some networking operations are performed inside main method; I mean Oncreate(). You can use AsyncTask for resolving this issue. or you can use

StrictMode.ThreadPolicy mypolicy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);

inside onCreate() method.