addListener method
- MpnSubscriptionListener listener
Adds a listener that will receive events from the MpnSubscription instance.
The same listener can be added to several different MpnSubscription instances.
Lifecycle A listener can be added at any time. A call to add a listener already present will be ignored.
-
listenerAn object that will receive the events as documented in the MpnSubscriptionListener interface. -
See removeListener
Implementation
void addListener(MpnSubscriptionListener listener) {
if (!_listeners.contains(listener)) {
_listeners.add(listener);
scheduleMicrotask(() {
listener.onListenStart();
});
}
}