I have a RaisedButton
. I want to animate it\'s color from green to red, and vice versa, every time the user click
class ChangeRaisedButtonColor extends StatefulWidget {
@override
ChangeRaisedButtonColorState createState() => ChangeRaisedButtonColorState();
}
class ChangeRaisedButtonColorState extends State
with SingleTickerProviderStateMixin {
AnimationController _animationController;
Animation _colorTween;
@override
void initState() {
_animationController =
AnimationController(vsync: this, duration: Duration(milliseconds: 300));
_colorTween = ColorTween(begin: Colors.red, end: Colors.green)
.animate(_animationController);
super.initState();
}
@override
void dispose() {
super.dispose();
_animationController.dispose();
}
@override
Widget build(BuildContext context) {
return AnimatedBuilder(
animation: _colorTween,
builder: (context, child) => RaisedButton(
child: Text("Change my color"),
color: _colorTween.value,
onPressed: () {
if (_animationController.status == AnimationStatus.completed) {
_animationController.reverse();
} else {
_animationController.forward();
}
},
),
);
}
}