How to share text and a link with social media in xamarin forms ios

Hi,
I want to share a text and a link with social media (facebook,instagram,twitter,FB messanger) in xamarin forms ios , when I tap on the facebook image, it opens the facebook app in the iphone and share a the data with my friends. How can I do this, am achieve this in android by the below code, and I am suck with iOS

             Activity _activity = Forms.Context as Activity;

             Intent _intent = new Intent(Intent.ActionSend);
            _intent.SetType("text/plain");
            _intent.SetPackage(packagename);
            _intent.PutExtra(Intent.ExtraText, message);

            try
            {
                _activity.StartActivity(_intent);
            }
            catch (Exception ex)
            {
                Toast.MakeText(Android.App.Application.Context, "This app is not installed", ToastLength.Short).Show();

            }

        }