Listener class Null safety . A widget that calls callbacks in response to common pointer events . It listens to events that can construct gestures, such as when the pointer is pressed, moved, then released or canceled.
Read moreHow do I use StreamSubscription?
The following example shows how listen() can be put to use:
Read moreHow do I use StreamSubscription?
The following example shows how listen() can be put to use:
Read moreHow do you add a listener on flutter?
“add click listener in flutter” Code Answer’s
Read moreWhat is notify listener in flutter?
notifyListeners method Null safety Call this method whenever the object changes, to notify any clients the object may have changed . Listeners that are added during this iteration will not be visited. Listeners that are removed during this iteration will not be visited after they are removed.
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