Returning a Java.Lang.Object When Overriding Adapter.GetItem

Question

I am inheriting from BaseAdapter & implementing ISpinnerAdapter as follows:

public class MachinesAdapter : BaseAdapter, ISpinnerAdapter

I attempt to override GetItem as follows:

public override Java.Lang.Object GetItem(int position)
{ return this.Machines[position]; }

However, this gives the following error:

Cannot implicitly convert type 'SlotTracker.Machine' to 'Java.Lang.Object'

How do I convert the returned item to Java.Lang.Object?

Answer 1

Hello,​

Welcome to our Microsoft Q&A platform!

Cannot implicitly convert type 'SlotTracker.Machine' to 'Java.Lang.Object'

How do I convert the returned item to Java.Lang.Object?

Please add generics for your BaseAdapter, MachinesAdapter method is like following code.

   public class MachinesAdapter : BaseAdapter<Machine>, ISpinnerAdapter  

Then you can change the return type to Machine in GetItem, and change the GetItem Method like following code.

   public override Machine this[int position] => Machines[position];  

Best Regards,

Leon Lu

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