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# Animation Samples
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Sample apps that showcase Flutter's animation features
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## Goals
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- Demonstrate the building blocks for animations and how they work together.
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- Provide samples for common patterns and use-cases.
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## Samples
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### Basics
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Building blocks and patterns
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1. **AnimatedContainerDemo**: Demonstrates how to use `AnimatedContainer`.
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2. **PageRouteBuilderDemo**: Demonstrates how to use `Tween` and `Animation` to
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build a custom page route transition.
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3. **AnimationControllerDemo**: Demonstrates how to use an
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`AnimationController`.
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4. **TweenDemo**: Demonstrates how to use a `Tween` with an
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`AnimationController`.
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5. **AnimatedBuilderDemo**: Demonstrates how to use an `AnimatedBuilder` with an
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`AnimationController`.
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6. **CustomTweenDemo**: Demonstrates how to extend `Tween`.
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7. **TweenSequenceDemo**: Demonstrates how to use `TweenSequence` to build a
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button that changes between different colors.
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8. **FadeTransitionDemo**: Demonstrates how to use `FadeTransition`.
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### Misc
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Other uses-cases and examples
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- **RepeatingAnimationDemo**: Demonstrates how to repeat an animation.
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- **ExpandCardDemo**: Demonstrates how to use `AnimatedCrossFade` to fade
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between two widgets and change the size.
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- **CarouselDemo**: Demonstrates how to use `PageView` with a custom animation.
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- **FocusImageDemo**: Demonstrates how to measure the size of a widget and
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expand it using a `PageRouteBuilder`.
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- **PhysicsCardDragDemo**: Demonstrates how to run an AnimationController with a
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spring simulation.
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- **CardSwipeDemo**: A swipeable card that demonstrates how to use gesture
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detection to drive an animation.
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- **AnimatedList**: Demonstrates how to use `AnimatedList`.
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- **AnimatedPositionedDemo**: Demonstrates how to use `AnimatedPositioned`.
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- **AnimatedSwitcherDemo**: Demonstrates how to use `AnimatedSwitcher`.
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- **HeroAnimationDemo**: Demonstrates how to use `Hero` animation.
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- **CurvedAnimationDemo**: Demonstrates how to use different curves in
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`CurvedAnimation`.
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## Other Resources
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- [Introduction to animations](https://flutter.dev/docs/development/ui/animations)
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- [Animation widgets](https://flutter.dev/docs/development/ui/widgets/animation)
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- [Flutter cookbook - Animations](https://flutter.dev/docs/cookbook/animation)
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- [Animations tutorial](https://flutter.dev/docs/development/ui/animations/tutorial)
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- [Implicit animation codelab](https://flutter.dev/docs/codelabs/implicit-animations)
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