Bug? Intent.PutExtra does not add object to Extras

[cimperia]

OS: Windows7 with .Net > 4.5
B4A: 5.20

There seems to be a bug with Intent.PutExtra. When I try to add my user defined Type (Category) to the intent Extras, it does not get added, and this failure happens silently.

After adding my 3 Extras to the intent, I call Log(intent_.ExtrasToString) and the Category object is missing. When the called activity checks for the existence of the parameter, of course it is not there.

Am I missing something?

Sub Globals
   Type Category(Text As String, Notes As String, IsNew As Boolean)
   Dim btAddCategory As Button
End Sub

Sub Activity_Create(FirstTime As Boolean)
   btAddCategory.Initialize("btAddCategory")
   Activity.AddView(btAddCategory, 50dip, 50dip, 100dip, 45dip)    
End Sub


Sub btAddCategory_Click
   Dim intent_ As Intent  
   Dim edit_category As Category

   'Populate Category Item
   edit_category.Initialize
   edit_category.Text = "Wine"
   edit_category.Notes = "Original Notes"
   edit_category.IsNew = False

   'Set up Intent    
   intent_.Initialize("", "")
   intent_.PutExtra("FromActivity", "CategoryManager")    
   intent_.PutExtra("cat", edit_category)
   intent_.PutExtra("Sub_To_Call", "InsertCategory")    

   'Check list of Extras, and cat is missing
   Log(intent_.ExtrasToString)

   intent_.SetComponent(GetPackageName & "/.categorymanager")

   StartActivity(intent_)
   End Sub

   Sub GetPackageName As String
   Private r As Reflector
   Return r.GetStaticField("anywheresoftware.b4a.BA", "packageName")
End Sub

CategoryManager Activity:

Sub Activity_Create(FirstTime As Boolean)
  Dim sub_name As String
   Dim cat As Category
   cat.Initialize
  
  Dim StartingIntent As Intent
  StartingIntent = Activity.GetStartingIntent
  
   sub_name = StartingIntent.GetExtra("Sub_To_Call")

   Log(StartingIntent.HasExtra("cat")) 'Always False
  
   'cat is always null
   cat = StartingIntent.GetExtra("cat")
   Log(cat = Null) 'Always true

   'CallSub2("", sub_name, cat)  
End Sub

 

[corwin42]

Objects put in the extras of an intent must be serializable. Custom defined types are not serializable.

 

[cimperia]

Thanks.

It doesn't say anything about that in the B4A documentation though.