[mono-android] Strange InvalidCastException

[Jonathan Pryor]

This has been filed as:

	http://bugzilla.xamarin.com/show_bug.cgi?id=2147

Thanks,
 - Jon

On Nov 18, 2011, at 6:34 AM, uh wrote:

> Hello,
> 
> I receive a InvalidCastException, that I cannot understand in the following
> codes:
> 
> try
> {
> 	Android.Runtime.JavaList<Dictionary&lt;String, object>> jl = new
> Android.Runtime.JavaList<Dictionary&lt;String, object>>();
> 	Dictionary<String, object> v = new Dictionary<String, object>();
> 	v.Add("szLongName", "Bla.pdf");
> 	jl.Add(v);     // Exception
> }
> catch(Exception ex)
> {
> }
> 
> Exception:
> 
> Cannot cast from source type to destination type.
>  at
> Android.Runtime.JavaTypeConverter`1+JavaDictionaryConverter`1[System.Collections.Generic.Dictionary`2[System.String,System.Object],System.Collections.Generic.Dictionary`2[System.String,System.Object]].ToNative
> (System.Collections.Generic.Dictionary`2 val) [0x0001c] in
> /Users/jon/Development/xamarin/monodroid/Mono.Android/src/Runtime/JavaTypeConverter.cs:298 
>  at
> Android.Runtime.JavaList`1[System.Collections.Generic.Dictionary`2[System.String,System.Object]].Add
> (System.Collections.Generic.Dictionary`2 item) [0x00000] in
> /Users/jon/Development/xamarin/monodroid/Mono.Android/src/Runtime/JavaList.cs:250 
>  at HelloM4A.Activity3.OnCreate (Android.OS.Bundle bundle) [0x00023] in
> /Users/uh/Projects/HelloM4A/HelloM4A/Activity3.cs:37 
> 
> 
> try
> {
> 	Android.Runtime.JavaList jl = new Android.Runtime.JavaList();
> 	Dictionary<String, object> v = new Dictionary<String, object>();
> 	v.Add("szLongName", "Bla.pdf");
> 	jl.Add(v);
> 	Dictionary<String, object> vo = (Dictionary<String, object>)jl[0];   //
> Exception
> }
> catch(Exception ex)
> {
> }
> 
> Exception:
> 
> Cannot cast from source type to destination type.
>  at
> Android.Runtime.JavaTypeConverter`1+JavaDictionaryConverter`1[System.Collections.Generic.Dictionary`2[System.String,System.Object],System.Collections.Generic.Dictionary`2[System.String,System.Object]].ToNative
> (System.Collections.Generic.Dictionary`2 val) [0x0001c] in
> /Users/jon/Development/xamarin/monodroid/Mono.Android/src/Runtime/JavaTypeConverter.cs:298 
>  at
> Android.Runtime.JavaList`1[System.Collections.Generic.Dictionary`2[System.String,System.Object]].Add
> (System.Collections.Generic.Dictionary`2 item) [0x00000] in
> /Users/jon/Development/xamarin/monodroid/Mono.Android/src/Runtime/JavaList.cs:250 
>  at HelloM4A.Activity3.OnCreate (Android.OS.Bundle bundle) [0x00023] in
> /Users/uh/Projects/HelloM4A/HelloM4A/Activity3.cs:37 
> 
> 
> I cannot understand, what the problem is. Source and Destination types are
> exactly identical.
> 
> Regards,
>  Uwe Honermann
>  windream GmbH
> 
> 
> --
> View this message in context: http://mono-for-android.1047100.n5.nabble.com/Strange-InvalidCastException-tp5004015p5004015.html
> Sent from the Mono for Android mailing list archive at Nabble.com.
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