INNER CODE UNIT · Dart

Box

afgprogrammer/Flutter-examples · lib/pages/animated_container.dart:3

class Box extends StatefulWidget {
  const Box({ Key? key }) : super(key: key);

  @override
  _BoxState createState() => _BoxState();
}

class _BoxState extends State<Box> with SingleTickerProviderStateMixin {
  late AnimationController _controller;

  double width = 50;
  double height = 50;

  @override
  void initState() {
    _controller = AnimationController(
      duration: const Duration(milliseconds: 5000),
      vsync: this,

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