listen abstract method
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});
Calls callback
with current value, when the value changes.
StreamSubscription<T> listen(void Function(T event) onData,
{Function? onError, void Function()? onDone, bool? cancelOnError});