[android-developers] Re: HttpClient routine works but w/o connection, it times out?

Indeed! Why, one of the major benefits of using HttpClient instead of
barebones java.net methods is that it makes it easy to move all the
HTTP waiting -out- of the UI main thread.

See, for example, how the authors of "Unlocking Android" have done
this in the sample code for chapter 6 at http://code.google.com/p/unlocking-android/
.

See especially the class HTTPRequestHelper in HTTPHelperForm.java in
NetworkExplorer, since this class 'wraps' HttpClient.

Of course, to get a full explanation of how this separation works, you
need to buy and read the book;)

NB: their approach is noticeably different from Mark Murphy's
solution. They use the Looper and Handler, which they call the "Swiss-
Army knife" of threading in Android.

This approach may appear a little dated compared to AsyncTask, but at
least this way you learn to use the Swiss-Army knife, instead of
becoming dependent on AsyncTask. One should expect the Swiss-Army
knife to be more widely applicable than AsyncTask.

Besides: it is a good exercise to rewrite it to use AsyncTask in place
of Looper/Handler or vice versa.

On Sep 17, 1:04 pm, Kostya Vasilyev <kmans...@gmail.com> wrote:
>   John,
>
> It's not a good idea to do networking on the UI thread. As you found
> out, if there is a delay, for reasons that you can't control, the user
> gets the ANR dialog ("application not responding").
>
> Take a look at several options offered by Android to move your
> networking code to a worker thread:
>
> - AsyncTask
> - IntentService
>
> - An improvement upon IntentService, developed by Mark Murphy:
> WakefulIntentService
>
> -- Kostya
>
> 17.09.2010 23:59, john brown пишет:
>
> > It does however display the error "Application MyApp (in process
> > mnt.android.myapp.MA103) is not responding." along with a Force Close
> > button and a Wait button. If I wait a moment and press the Wait
> > button, the app proceeds like it should.
>
> > What can I do to avoid the long wait (and error) when there is no
> > service?
>
> --
> Kostya Vasilyev -- WiFi Manager + pretty widget --http://kmansoft.wordpress.com

--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en