How to implement animation effects when using Jetpack Compose?

In Jetpack Compose, animation effects are implemented using built-in APIs that allow smooth changes of state values and creation of transitions. The main tools are:

• animate*AsState — for animating individual values (e.g., color, size, position).
• updateTransition — for animating between multiple states.
• AnimatedVisibility — for animating the appearance and disappearance of elements.

Example of color change animation on click:

var selected by remember { mutableStateOf(false) }
val color by animateColorAsState(if (selected) Color.Red else Color.Gray)

Box(
    modifier = Modifier
        .size(100.dp)
        .background(color)
        .clickable { selected = !selected }
)

Thus, changing the state, Compose automatically animates the transitions, making the interface more lively and responsive.