listen abstract method

StreamSubscription<T> listen(
  1. void onData(
    1. T event
    ), {
  2. Function? onError,
  3. void onDone()?,
  4. bool? cancelOnError,
})

Calls callback with current value, when the value changes.

Implementation

StreamSubscription<T> listen(void Function(T event) onData,
    {Function? onError, void Function()? onDone, bool? cancelOnError});