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
-
Get a hash code for this object.
read-only, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
Methods
-
createTicker(
TickerCallback onTick) → Ticker -
Creates a ticker with the given callback.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited -
toString(
) → String -
Returns a string representation of this object.
inherited