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Add clarification in Animation's listener API docs (#33363)

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Todd Volkert 2019-05-27 10:17:09 -07:00 committed by GitHub
parent 75d75bfaec
commit ddef473e07
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packages/flutter/lib/src/animation/animation.dart
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@ -63,6 +63,9 @@ abstract class Animation<T> extends Listenable implements ValueListenable<T> {
/// Stop calling the listener every time the value of the animation changes. /// Stop calling the listener every time the value of the animation changes.
/// ///
/// If `listener` is not currently registered as a listener, this method does
/// nothing.
///
/// Listeners can be added with [addListener]. /// Listeners can be added with [addListener].
@override @override
void removeListener(VoidCallback listener); void removeListener(VoidCallback listener);
@ -74,6 +77,9 @@ abstract class Animation<T> extends Listenable implements ValueListenable<T> {
/// Stops calling the listener every time the status of the animation changes. /// Stops calling the listener every time the status of the animation changes.
/// ///
/// If `listener` is not currently registered as a status listener, this
/// method does nothing.
///
/// Listeners can be added with [addStatusListener]. /// Listeners can be added with [addStatusListener].
void removeStatusListener(AnimationStatusListener listener); void removeStatusListener(AnimationStatusListener listener);