On Apr 5, 2012, at 7:11 AM, gnauck wrote:
> When 1 have lists with 200+ items and scroll down the list on the emulator I
> get randomly an application crash. Visual Studio reports the following errors:
>
> Unhandled Exception: System.Reflection.TargetInvocationException: Exception
> has been thrown by the target of an invocation.
> or
> System.NullReferenceException.
What's the Android Debug Log output?
http://docs.xamarin.com/android/advanced_topics/android_debug_log
My guess is that you're running out of global references, and you'll see a
message in the debug log similar to:
http://docs.xamarin.com/android/troubleshooting#Unexpected_NullReferenceExceptions
> I can cause this problem also with the TablesAndCellStyles examples. Are
> there any limitations for lists in Android?
I'm not sure where you're getting this sample from.
The emulator has a 2000 global reference limit (hardware has a 52000 limit),
and each instance of a Java.Lang.Object subclass holds a global reference:
http://docs.xamarin.com/android/advanced_topics/architecture#Managed_Callable_Wrappers
As a guess, if you're inheriting from BaseAdapter or some BaseAdapter subclass,
your GetView() method should reuse the `convertView` parameter, thus minimizing
the number of objects that are created:
https://github.com/xamarin/monodroid-samples/blob/master/ApiDemo/Tutorials/GridViewTutorial.cs#L52
- Jon
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