BackdropScaffoldState

Artifact: androidx.compose.material:material

Added in 1.0.0

Cmn
```
class BackdropScaffoldState
```

State of the BackdropScaffold composable.

Summary

Public companion functions
`Saver<BackdropScaffoldState, *>`	`Saver( animationSpec: AnimationSpec<Float>, confirmStateChange: (BackdropValue) -> Boolean, snackbarHostState: SnackbarHostState, density: Density )` The default `Saver` implementation for `BackdropScaffoldState`.	Cmn

Public constructors
`BackdropScaffoldState( initialValue: BackdropValue, animationSpec: AnimationSpec<Float>, confirmValueChange: (BackdropValue) -> Boolean, snackbarHostState: SnackbarHostState )` This function is deprecated. This constructor is deprecated.	Cmn

Public functions
`suspend Unit`	`conceal()` Conceal the back layer with animation and suspend until it if fully concealed or animation has been cancelled.	Cmn
`@FloatRange(from = 0.0, to = 1.0) Float`	`progress(from: BackdropValue, to: BackdropValue)` The fraction of the offset between `from` and `to`, as a fraction between 0f..1f, or 1f if `from` is equal to `to`.	Cmn
`Float`	`requireOffset()` Require the current offset.	Cmn
`suspend Unit`	`reveal()` Reveal the back layer with animation and suspend until it if fully revealed or animation has been cancelled.	Cmn

Public properties
`(BackdropValue) -> Boolean`	`confirmValueChange` Optional callback invoked to confirm or veto a pending state change.	Cmn
`BackdropValue`	`currentValue` The current value of the `BottomSheetState`.	Cmn
`Boolean`	`isConcealed` Whether the back layer is concealed.	Cmn
`Boolean`	`isRevealed` Whether the back layer is revealed.	Cmn
`SnackbarHostState`	`snackbarHostState` The `SnackbarHostState` used to show snackbars inside the scaffold.	Cmn
`BackdropValue`	`targetValue` The target value the state will settle at once the current interaction ends, or the `currentValue` if there is no interaction in progress.	Cmn

Public companion functions

Saver

Cmn

Added in 1.7.0

fun Saver(
    animationSpec: AnimationSpec<Float>,
    confirmStateChange: (BackdropValue) -> Boolean,
    snackbarHostState: SnackbarHostState,
    density: Density
): Saver<BackdropScaffoldState, *>

The default Saver implementation for BackdropScaffoldState.

Public constructors

BackdropScaffoldState

Cmn

Added in 1.0.0

Deprecated in 1.7.0

BackdropScaffoldState(
    initialValue: BackdropValue,
    animationSpec: AnimationSpec<Float> = BackdropScaffoldDefaults.AnimationSpec,
    confirmValueChange: (BackdropValue) -> Boolean = { true },
    snackbarHostState: SnackbarHostState = SnackbarHostState()
)

Parameters
`initialValue: BackdropValue`	The initial value of the state.
`animationSpec: AnimationSpec<Float> = BackdropScaffoldDefaults.AnimationSpec`	The default animation that will be used to animate to a new state.
`confirmValueChange: (BackdropValue) -> Boolean = { true }`	Optional callback invoked to confirm or veto a pending state change.
`snackbarHostState: SnackbarHostState = SnackbarHostState()`	The `SnackbarHostState` used to show snackbars inside the scaffold.

Public functions

conceal

Cmn

Added in 1.0.0

suspend fun conceal(): Unit

Conceal the back layer with animation and suspend until it if fully concealed or animation has been cancelled. This method will throw CancellationException if the animation is interrupted

progress

Cmn

Added in 1.7.0

fun progress(from: BackdropValue, to: BackdropValue): @FloatRange(from = 0.0, to = 1.0) Float

The fraction of the offset between from and to, as a fraction between 0f..1f, or 1f if from is equal to to.

Parameters
`from: BackdropValue`	The starting value used to calculate the distance
`to: BackdropValue`	The end value used to calculate the distance

requireOffset

Cmn

Added in 1.7.0

fun requireOffset(): Float

Require the current offset.

Throws
`kotlin.IllegalStateException`	If the offset has not been initialized yet

reveal

Cmn

Added in 1.0.0

suspend fun reveal(): Unit

Reveal the back layer with animation and suspend until it if fully revealed or animation has been cancelled. This method will throw CancellationException if the animation is interrupted

Public properties

confirmValueChange

Cmn

Added in 1.7.0

val confirmValueChange: (BackdropValue) -> Boolean

Optional callback invoked to confirm or veto a pending state change.

currentValue

Cmn

Added in 1.8.0-alpha07

val currentValue: BackdropValue

The current value of the BottomSheetState.

isConcealed

Cmn

Added in 1.0.0

val isConcealed: Boolean

Whether the back layer is concealed.

isRevealed

Cmn

Added in 1.0.0

val isRevealed: Boolean

Whether the back layer is revealed.

snackbarHostState

Cmn

Added in 1.0.0

val snackbarHostState: SnackbarHostState

The SnackbarHostState used to show snackbars inside the scaffold.

targetValue

Cmn

Added in 1.8.0-alpha07

val targetValue: BackdropValue

The target value the state will settle at once the current interaction ends, or the currentValue if there is no interaction in progress.