Xamarin Forms iOS Picker done

public class MyPickerRenderer : PickerRenderer
{
    protected override void OnElementChanged(ElementChangedEventArgs<Picker> e)
    {
        base.OnElementChanged(e);

        if(e.OldElement != null)
        {
            var toolbar = (UIToolbar)Control.InputAccessoryView;
            var doneBtn = toolbar.Items[1];

            doneBtn.Clicked -= DoneBtn_Clicked;
        }

        if(e.NewElement != null)
        {
            var toolbar = (UIToolbar)Control.InputAccessoryView;
            var doneBtn = toolbar.Items[1];

            doneBtn.Clicked += DoneBtn_Clicked;
        }
    }

    void DoneBtn_Clicked(object sender, EventArgs e)
    {
        Console.WriteLine("Clicked!!!!");
    }
}

Source: stackoverflow.com

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