"type 'double' is not a subtype of type 'int' in type cast" error in flutter. What should i do?
2,643
All you need is to explicitly state the type of your Tween
to be double
:
AnimationController(duration: Duration(seconds: 3), vsync: this);
animation = Tween<double>(begin: -1, end: 0).animate(CurvedAnimation(curve: Curves.fastOutSlowIn, parent: animationController));
Author by
Admin
Updated on December 22, 2022Comments
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Admin 11 months
I am doing a simple Curves Animation in flutter, but i am always getting an error like this "type 'double' is not a subtype of type 'int' in type cast" , what error i have made here?
class HomePage extends StatefulWidget { @override _HomePageState createState() => _HomePageState(); } class _HomePageState extends State<HomePage> with SingleTickerProviderStateMixin { Animation animation; AnimationController animationController; @override void initState() { super.initState(); animationController = AnimationController(duration: Duration(seconds: 3), vsync: this); animation = Tween(begin: -1, end: 0).animate(CurvedAnimation( curve: Curves.fastOutSlowIn, parent: animationController)); } @override Widget build(BuildContext context) { final double width = MediaQuery.of(context).size.width; animationController.forward(); return AnimatedBuilder( animation: animationController, builder: (BuildContext context, Widget child) { return Scaffold( body: Transform( transform: Matrix4.translationValues(animation.value * width, 0, 0), child: Center( child: Text( "Welcome", style: TextStyle(fontWeight: FontWeight.bold, fontSize: 50), ), ), ), ); }); } }