INNER CODE UNIT · Dart

_FadeAnimationState

afgprogrammer/Flutter-examples · lib/fade_animation.dart:11

class _FadeAnimationState extends State<FadeAnimation> {
  bool _visible = true;

  @override
  Widget build(BuildContext context) {
    return Container(
      height: 300,
      child: Column(
        children: [
          AnimatedOpacity(
            opacity: _visible ? 1 : 0, 
            duration: Duration(milliseconds: 500),
            child: Container(
              width: 200,
              height: 100,
              color: Colors.orangeAccent,
            ),
          ),

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