TickerProvider class Null safety
An interface implemented by classes that can vend Ticker objects.
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. If you are creating an AnimationController from a State, then you can use the TickerProviderStateMixin and SingleTickerProviderStateMixin classes to obtain a suitable TickerProvider. The widget test framework WidgetTester object can be used as a ticker provider in the context of tests. In other contexts, you will have to either pass a TickerProvider from a higher level (e.g. indirectly from a State that mixes in TickerProviderStateMixin), or create a custom TickerProvider subclass.
Constructors
- TickerProvider()
-
Abstract const constructor. This constructor enables subclasses to provide
const constructors so that they can be used in const expressions.
const
Properties
- hashCode → int
-
The hash code for this object.
read-onlyinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
Methods
-
createTicker(
TickerCallback onTick) → Ticker -
Creates a ticker with the given callback.
factory">@factory
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited