If hasChanged() returns true, calls the update()
method for every observer in the list of observers using null as the
argument.
Syntax
[Android.Runtime.Register("notifyObservers", "()V", "GetNotifyObserversHandler")] public virtual voidNotifyObservers ()
Remarks
If hasChanged() returns true, calls the update()
method for every observer in the list of observers using null as the
argument. Afterwards, calls clearChanged().