TickerProvider class abstract

An interface implemented by classes that can vend Ticker objects.

To obtain a TickerProvider, consider mixing in either TickerProviderStateMixin (which always works) or SingleTickerProviderStateMixin (which is more efficient when it works) to make a State subclass implement TickerProvider. That State can then be passed to lower-level widgets or other related objects. This ensures the resulting Tickers will only tick when that State's subtree is enabled, as defined by TickerMode.

In widget tests, the WidgetTester object is also a TickerProvider.

Tickers can be used by any object that wants to be notified whenever a frame triggers, but are most commonly used indirectly via an AnimationController. AnimationControllers need a TickerProvider to obtain their Ticker.