Mobile Development
Flutter
Subjective
Oct 03, 2025
How to implement advanced animations in Flutter?
Detailed Explanation
Advanced Flutter animations:\n\n**Animation Controllers:**\n\nclass _AnimatedWidgetState extends State \n with TickerProviderStateMixin {\n late AnimationController _controller;\n late Animation _animation;\n \n @override\n void initState() {\n super.initState();\n _controller = AnimationController(\n duration: Duration(seconds: 2),\n vsync: this\n );\n \n _animation = Tween(\n begin: 0.0,\n end: 1.0\n ).animate(CurvedAnimation(\n parent: _controller,\n curve: Curves.easeInOut\n ));\n }\n}\n\n\n**Custom Transitions:**\n\nclass SlideRoute extends PageRouteBuilder {\n final Widget page;\n \n SlideRoute({required this.page})\n : super(\n pageBuilder: (context, animation, secondaryAnimation) => page,\n transitionsBuilder: (context, animation, secondaryAnimation, child) {\n return SlideTransition(\n position: Tween(\n begin: Offset(1.0, 0.0),\n end: Offset.zero\n ).animate(animation),\n child: child\n );\n }\n );\n}\n\n\n**Staggered Animations:**\n\nclass StaggeredAnimation {\n final AnimationController controller;\n final Animation opacity;\n final Animation width;\n final Animation padding;\n \n StaggeredAnimation(this.controller)\n : opacity = Tween(begin: 0.0, end: 1.0).animate(\n CurvedAnimation(parent: controller, curve: Interval(0.0, 0.100))\n ),\n width = Tween(begin: 50.0, end: 150.0).animate(\n CurvedAnimation(parent: controller, curve: Interval(0.125, 0.250))\n ),\n padding = Tween(\n begin: EdgeInsets.only(left: 0.0),\n end: EdgeInsets.only(left: 100.0)\n ).animate(\n CurvedAnimation(parent: controller, curve: Interval(0.250, 0.375))\n );\n}\n\n\n**Physics-based Animations:**\n• SpringSimulation for natural motion\n• GravitySimulation for falling effects\n• FrictionSimulation for deceleration
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