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import 'package:flutter/material.dart'; | |
class Option2 extends StatefulWidget { | |
@override | |
_Option2State createState() => _Option2State(); | |
} | |
class _Option2State extends State<Option2> with TickerProviderStateMixin { | |
Animation<double> animation; | |
AnimationController animationController; | |
@override | |
void initState() { | |
// TODO: implement initState | |
super.initState(); | |
animationController = | |
AnimationController(vsync: this, duration: Duration(seconds: 5)); | |
animation = Tween<double>(begin: 0, end: -350).animate(animationController); | |
} | |
@override | |
Widget build(BuildContext context) { | |
return Stack( | |
children: <Widget>[ | |
Container( | |
decoration: BoxDecoration( | |
image: DecorationImage( | |
image: AssetImage('assets/images/ibg.png'), | |
fit: BoxFit.cover)), | |
), | |
Align( | |
alignment: AlignmentDirectional(0.0, 0.7), | |
child: AnimatedBuilder(animation: animation, builder: (BuildContext context, Widget chile){ | |
return Transform.translate( | |
offset: Offset(0, animation.value), | |
child: Container( | |
height: 250, | |
width: 150, | |
decoration: BoxDecoration( | |
image: DecorationImage( | |
image: AssetImage('assets/images/ironman.png'), | |
)), | |
), | |
); | |
}), | |
), | |
Align( | |
alignment: AlignmentDirectional.bottomCenter, | |
child: RaisedButton( | |
onPressed: () { | |
animationController.forward(); | |
}, | |
child: Text('Go'), | |
color: Colors.red, | |
textColor: Colors.yellowAccent, | |
shape: BeveledRectangleBorder( | |
borderRadius: BorderRadius.all(Radius.circular(20))), | |
), | |
) | |
], | |
); | |
} | |
@override | |
void dispose() { | |
animationController.dispose(); | |
super.dispose(); | |
} | |
} |
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