Showing and hiding UI elements with animations

Your user interface will often contain information that need not be visible all the time. For example, in an address book, you may want to show only key attributes of a contact and present detailed information upon request, typically after a button click. However, just showing and hiding the additional data feels sudden and abrupt. Using animations leads to a more pleasant experience, so let’s investigate this more.

Understanding AnimatedVisibility()

In this section, we will look at the AnimatedVisibilityDemo() composable function. Like StateDemo(), SingleValueAnimationDemo(), and MultipleValuesAnimationDemo(), it uses a Column(), which contains a Button()and a Box(). This part of the code is simple and straightforward, so there is no need to repeat it in print. The button toggles a state, which starts the animation. Let’s see how this works:

AnimatedVisibility(
  visible = visible,
  enter =...