Close the view if it's showing, or don't show it if it isn't showing yet.
Syntax
[Android.Runtime.Register("cancel", "()V", "GetCancelHandler")] public virtual voidCancel ()
Remarks
Close the view if it's showing, or don't show it if it isn't showing yet.
You do not normally have to call this. Normally view will disappear on its own
after the appropriate duration.