How to show CheckBox control in xamarin.forms?

Hi,

I had one requirement to show the check box control in my xamarin.forms cross plotform application. I was using custom renderer for this checkbox from the following source example.

https://github.com/XLabs/Xamarin-Forms-Labs/wiki/Checkbox-Control

When I use this custom renderer, it is showing correctly in Android application. But check box is not visible in IOS application. Please let me know, do I need to do any extra configuration for display check box in Ios?

Please suggest me on this.

Thanks, Hima