NullReferenceException when leaving a page after selecting a suggestion

Hello

I have the following exception on Android using V0.5.0

01-19 15:57:02.988 I/MonoDroid(25422): System.NullReferenceException: Object reference not set to an instance of an object.
01-19 15:57:02.988 I/MonoDroid(25422):   at dotMorten.Xamarin.Forms.AutoSuggestBoxRenderer.<UpdateItemsSource>b__14_0 (System.Object o) [0x00000] in E:\GitHub\dotMorten\XamarinFormsControls\AutoSuggestBox\dotMorten.Xamarin.Forms.AutoSuggestBox\AutoSuggestBoxRenderer.cs:233 
01-19 15:57:02.988 I/MonoDroid(25422):   at dotMorten.Xamarin.Forms.NativeAutoSuggestBox+SuggestCompleteAdapter+<>c__DisplayClass4_0.<UpdateList>b__0 (System.Object s) [0x00000] in E:\GitHub\dotMorten\XamarinFormsControls\AutoSuggestBox\dotMorten.Xamarin.Forms.AutoSuggestBox\NativeAutoSuggestBox.Android.cs:147 
01-19 15:57:02.988 I/MonoDroid(25422):   at System.Linq.Enumerable+SelectListIterator`2[TSource,TResult].ToArray () [0x00034] in <715c2ff6913942e6aa8535593b3ef35a>:0 
01-19 15:57:02.988 I/MonoDroid(25422):   at System.Linq.Enumerable.ToArray[TSource] (System.Collections.Generic.IEnumerable`1[T] source) [0x0001f] in <715c2ff6913942e6aa8535593b3ef35a>:0 
01-19 15:57:02.988 I/MonoDroid(25422):   at dotMorten.Xamarin.Forms.NativeAutoSuggestBox+SuggestCompleteAdapter+SuggestFilter.PerformFiltering (Java.Lang.ICharSequence constraint) [0x0001c] in E:\GitHub\dotMorten\XamarinFormsControls\AutoSuggestBox\dotMorten.Xamarin.Forms.AutoSuggestBox\NativeAutoSuggestBox.Android.cs:191 
01-19 15:57:02.988 I/MonoDroid(25422):   at Android.Widget.Filter.n_PerformFiltering_Ljava_lang_CharSequence_ (System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr native_constraint) [0x00011] in <6f8818d6ffa14f4bad6fb5f5d0f0e665>:0 
01-19 15:57:02.988 I/MonoDroid(25422):   at (wrapper dynamic-method) System.Object.61(intptr,intptr,intptr)

Steps to Reproduce

1. Go on a page with the AutoSuggestBox
2. Start typing and select a suggested element (this is important, if you just type something without using the suggestion there is no error)
3. Go on the previous page (or I think, do whatever that would makes the page where the AutoSuggestBox was to be unreferenced)

And thanks for the good work 😃

[Sim-github]

Created a test where I reproduce. https://github.com/Sim-github/AutoSuggestTest

It is a bit more convoluted than I expected, maybe what I’m doing is not the supposed way to manage carousel navigation… What I do is that I have a CarouselPage where I add my pages, and on some events I remove pages. Here in the example I created, click on the first two buttons (each add a new page in the carousel and navigate to it), on the third page select the word “Test” from the AutoSuggestBox. Then slide back to the first page and click again on the button. What this button does is remove the all next pages in the carousel and add the second page. Somehow doing this raise the error.

(But do this again without selecting “Test” and entering something else works fine… If you manage to figure out what is going on I’m curious…)

[dotMorten]

Fixed in v0.6.0