BackdropScaffoldState

Kotlin |Java

@Stable class BackdropScaffoldState : SwipeableState<BackdropValue>

kotlin.Any
↳	androidx.compose.material.SwipeableState<androidx.compose.material.BackdropValue>
	↳	androidx.compose.material.BackdropScaffoldState

State of the BackdropScaffold composable.

Summary

Public constructors
<init>(initialValue: BackdropValue, clock: AnimationClockObservable, animationSpec: AnimationSpec<Float> = SwipeableDefaults.AnimationSpec, confirmStateChange: (BackdropValue) -> Boolean = { true }, snackbarHostState: SnackbarHostState = SnackbarHostState()) State of the BackdropScaffold composable.

Public methods
Unit	conceal(onConcealed: () -> Unit = null) Conceal the back layer, with an animation.
Unit	reveal(onRevealed: () -> Unit = null) Reveal the back layer, with an animation.

Companion functions
Saver<BackdropScaffoldState, *>	Saver(clock: AnimationClockObservable, animationSpec: AnimationSpec<Float>, confirmStateChange: (BackdropValue) -> Boolean, snackbarHostState: SnackbarHostState) The default Saver implementation for BackdropScaffoldState.

Inherited functions

From class SwipeableState Unit animateTo(targetValue: T, anim: AnimationSpec<Float> = animationSpec, onEnd: (AnimationEndReason, T) -> Unit = null) Set the state to the target value by starting an animation. Float performDrag(delta: Float) Force swipeable to consume drag delta provided from outside of the regular swipeable gesture flow. Note: This method performs generic drag and it won't settle to any particular anchor, * leaving swipeable in between anchors. When done dragging, performFling must be called as well to ensure swipeable will settle at the anchor. In general cases, swipeable drags by itself when being swiped. This method is to be used for nested scroll logic that wraps the swipeable. In nested scroll developer may want to force drag when the child scroll container reaches the bound. Unit performFling(velocity: Float, onEnd: () -> Unit) Perform fling with settling to one of the anchors which is determined by the given velocity. Fling with settling swipeable will always consume all the velocity provided since it will settle at the anchor. In general cases, swipeable flings by itself when being swiped. This method is to be used for nested scroll logic that wraps the swipeable. In nested scroll developer may want to trigger settling fling when the child scroll container reaches the bound. Unit snapTo(targetValue: T) Set the state to the target value immediately, without any animation.

Properties
Boolean	isConcealed Whether the back layer is concealed.
Boolean	isRevealed Whether the back layer is revealed.
SnackbarHostState	snackbarHostState The SnackbarHostState used to show snackbars inside the scaffold.

Inherited properties

From class SwipeableState Float direction The direction in which the swipeable is moving, relative to the current value. This will be either 1f if it is is moving from left to right or top to bottom, -1f if it is moving from right to left or bottom to top, or 0f if no swipe or animation is in progress. Boolean isAnimationRunning Whether the state is currently animating. State<Float> offset The current position (in pixels) of the swipeable. You should use this state to offset your content accordingly. The recommended way is to use Modifier.offsetPx. This includes the resistance by default, if resistance is enabled. State<Float> overflow The amount by which the swipeable has been swiped past its bounds. SwipeProgress<T> progress Information about the ongoing swipe or animation, if any. See SwipeProgress for details. If no swipe or animation is in progress, this returns SwipeProgress(value, value, 1f). T targetValue The target value of the state. If a swipe is in progress, this is the value that the swipeable would animate to if the swipe finished. If an animation is running, this is the target value of that animation. Finally, if no swipe or animation is in progress, this is the same as the value. T value The current value of the state. If no swipe or animation is in progress, this corresponds to the anchor at which the swipeable is currently settled. If a swipe or animation is in progress, this corresponds the last anchor at which the swipeable was settled before the swipe or animation started.

Public constructors

<init>

BackdropScaffoldState(
    initialValue: BackdropValue, 
    clock: AnimationClockObservable, 
    animationSpec: AnimationSpec<Float> = SwipeableDefaults.AnimationSpec, 
    confirmStateChange: (BackdropValue) -> Boolean = { true }, 
    snackbarHostState: SnackbarHostState = SnackbarHostState())

State of the BackdropScaffold composable.

Parameters
initialValue: BackdropValue	The initial value of the state.
clock: AnimationClockObservable	The animation clock that will be used to drive the animations.
animationSpec: AnimationSpec<