Flutter Animation Deep Dive — AnimationController, Custom Tweens, and Physics Simulations

Flutter Animation Deep Dive — AnimationController, Custom Tweens, and Physics Simulations Flutter's animation system divides into two layers: implicit (value-driven, automatic) and explicit (controller-driven, precise). Knowing when to use each — and how to compose them — separates polished apps from janky ones. Implicit Animations: Let the Framework Drive AnimatedContainer ( duration: const Duration ( milliseconds: 400 ), curve: Curves . easeOutCubic , width: _expanded ? 300 : 100 , height: _ex