使 ModalBottomSheetLayout 始终展开

Question

ModalBottomSheetLayout我在 Jetpack Compose 中使用。每当它显示为 时modalBottomSheetState.show()，它都会显示HalfExpanded或 ，Expanded具体取决于其内容的高度。这是来自源代码：

val anchors = if (sheetHeight < fullHeight / 2) {
        mapOf(
            fullHeight to Hidden,
            fullHeight - sheetHeight to Expanded
        )
    } else {
        mapOf(
            fullHeight to Hidden,
            fullHeight / 2 to HalfExpanded,
            max(0f, fullHeight - sheetHeight) to Expanded
        )
    }
    Modifier.swipeable(
        state = sheetState,
        anchors = anchors,
        orientation = Orientation.Vertical,
        enabled = sheetState.currentValue != Hidden,
        resistance = null
    )

然后show()像这里一样工作：

 internal val isHalfExpandedEnabled: Boolean
    get() = anchors.values.contains(HalfExpanded)

/**
 * Show the bottom sheet with animation and suspend until it's shown. If half expand is
 * enabled, the bottom sheet will be half expanded. Otherwise it will be fully expanded.
 *
 * @throws [CancellationException] if the animation is interrupted
 */
suspend fun show() {
    val targetValue =
        if (isHalfExpandedEnabled) HalfExpanded
        else Expanded
    animateTo(targetValue = targetValue)
}

我想知道我们是否可以将其设置为Expanded始终

Answer 1

您可以使用：

scope.launch { state.animateTo(ModalBottomSheetValue.Expanded) }

代替

scope.launch { state.show() }

从 compose 开始，1.2您可以使用该skipHalfExpanded属性：

跳过半展开：如果为 true，则工作表将始终展开到“展开”状态，并在隐藏工作表时以编程方式或通过用户交互移动到“隐藏”状态

就像是：

var skipHalfExpanded by remember { mutableStateOf(true) }
val state = rememberModalBottomSheetState(
    initialValue = ModalBottomSheetValue.Hidden,
    skipHalfExpanded = skipHalfExpanded
)

Answer 2

使用：

bottomSheetState.animateTo(ModalBottomSheetValue.Expanded)

显示展开的工作表

使用confirmStateChange：

 val bottomSheetState =
        rememberModalBottomSheetState(ModalBottomSheetValue.Hidden, confirmStateChange = {
            it != ModalBottomSheetValue.HalfExpanded
        })

以避免板材半展开

Answer 3

使用skipHalfExpanded

val bottomSheetStatus =
    rememberModalBottomSheetState(
        ModalBottomSheetValue.Hidden,
        skipHalfExpanded = true,
    )