Flex中状态和动画功能的实例，包括在不同状态间的切换。包括切换动画、组件动画。简单易懂，对学习Flex状态和动画的初学者可能有帮助。-Flex, examples of state and animation features, including switching between different states. Including the switching animation, component animation. Easy to understand, to learn Fle