AnimatedWidgets library calling using AnimationController methods after dispose

[ranagwho]

I'm using CustomAnimatedWidget. However, sometimes a frame-drop occurs and the app throws an exception saying that the AnimationController methods should not be used after calling dispose. The error originates in the library. Hoping to see a fix soon!

Code:

CustomAnimatedWidget(
      enabled: _isVisible,
      duration: Duration(milliseconds: 300),
      curve: Curves.easeOut,
      builder: (context, percent) {
        final double animatedScale = 1 * percent;
        final double animatedOpacity = 1 * percent;
        final double animatedClipHeightFactor = 0.7 + 0.3 * percent;

        return Transform.scale(
          scale: animatedScale,
          alignment: Alignment.center,
          child: ...
        );
      },
      animationFinished: (bool smthn) {
        Debugging.log("animation finished");
      },
    );

Error trace:

[VERBOSE-2:ui_dart_state.cc(157)] Unhandled Exception: 'package:flutter/src/animation/animation_controller.dart': Failed assertion: line 455 pos 7: '_ticker != null': AnimationController.forward() called after AnimationController.dispose()
AnimationController methods should not be used after calling dispose.
#0 _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:42:39)
#1 _AssertionError._throwNew (dart:core-patch/errors_patch.dart:38:5)
#2 AnimationController.forward
package:flutter/…/animation/animation_controller.dart:455
#3 _CustomAnimatedWidget._updateAnimationState
package:animated_widgets/widgets/custom_animated.dart:65

#4 _CustomAnimatedWidget.didUpdateWidget
package:animated_widgets/widgets/custom_animated.dart:52
#5 StatefulElement.update
package:flutter/…/widgets/framework.dart:4690
#6 Element.updateChild
package:flutter/…/widgets/framework.dart:3201
#7 ComponentElement.performRebuild <…>

[mpiparo]

experiencing same issue. using v1.1.0