Android LazyVerticalGrid 是否支持滑动关闭

Question

在我最新的 Android 撰写项目中，我通过滑动来关闭 LazyColumn 的正常工作。

我现在进行了重构，并将所有 LazyColumns 替换为 LazyVerticalGrids。

LazyVerticalGrid 的一切都按预期工作，除了滑动以关闭

当我用一列从我的 LazyVerticalGrid 中滑动一个项目时，它工作正常

但是，当我从具有多个列的 LazyVerticalGrid 中滑动一个项目时，它会抛出以下异常：-

Process: com.elsevier.practiceupdate, PID: 23783
java.lang.IllegalArgumentException: Failed requirement.
    at androidx.compose.foundation.lazy.grid.LazyGridSpanLayoutProvider.getLineIndexOfItem--_Ze7BM(LazyGridSpanLayoutProvider.kt:174)
    at androidx.compose.foundation.lazy.grid.LazyGridItemPlacementAnimatorKt.lastIndexInPreviousLineBefore(LazyGridItemPlacementAnimator.kt:489)
    at androidx.compose.foundation.lazy.grid.LazyGridItemPlacementAnimatorKt.access$lastIndexInPreviousLineBefore(LazyGridItemPlacementAnimator.kt:1)
    at androidx.compose.foundation.lazy.grid.LazyGridItemPlacementAnimator.calculateExpectedOffset-xfIKQeg(LazyGridItemPlacementAnimator.kt:370)
    at androidx.compose.foundation.lazy.grid.LazyGridItemPlacementAnimator.onMeasured(LazyGridItemPlacementAnimator.kt:160)
    at androidx.compose.foundation.lazy.grid.LazyGridMeasureKt.measureLazyGrid-0cYbdkg(LazyGridMeasure.kt:241)
    at androidx.compose.foundation.lazy.grid.LazyGridKt$rememberLazyGridMeasurePolicy$1$1.invoke-0kLqBqw(LazyGrid.kt:334)
    at androidx.compose.foundation.lazy.grid.LazyGridKt$rememberLazyGridMeasurePolicy$1$1.invoke(LazyGrid.kt:184)
    at androidx.compose.foundation.lazy.layout.LazyLayoutKt$LazyLayout$1$2$1.invoke-0kLqBqw(LazyLayout.kt:71)
    at androidx.compose.foundation.lazy.layout.LazyLayoutKt$LazyLayout$1$2$1.invoke(LazyLayout.kt:69)
    at androidx.compose.ui.layout.LayoutNodeSubcompositionsState$createMeasurePolicy$1.measure-3p2s80s(SubcomposeLayout.kt:591)
    at androidx.compose.ui.node.InnerNodeCoordinator.measure-BRTryo0(InnerNodeCoordinator.kt:103)
    at androidx.compose.foundation.AndroidOverscrollKt$StretchOverscrollNonClippingLayer$2.invoke-3p2s80s(AndroidOverscroll.kt:578)
    at androidx.compose.foundation.AndroidOverscrollKt$StretchOverscrollNonClippingLayer$2.invoke(AndroidOverscroll.kt:577)
    at androidx.compose.ui.layout.LayoutModifierImpl.measure-3p2s80s(LayoutModifier.kt:285)
    at androidx.compose.ui.node.BackwardsCompatNode.measure-3p2s80s(BackwardsCompatNode.kt:343)
    at androidx.compose.ui.node.LayoutModifierNodeCoordinator.measure-BRTryo0(LayoutModifierNodeCoordinator.kt:155)
    at androidx.compose.foundation.AndroidOverscrollKt$StretchOverscrollNonClippingLayer$1.invoke-3p2s80s(AndroidOverscroll.kt:562)
    at androidx.compose.foundation.AndroidOverscrollKt$StretchOverscrollNonClippingLayer$1.invoke(AndroidOverscroll.kt:561)
    at androidx.compose.ui.layout.LayoutModifierImpl.measure-3p2s80s(LayoutModifier.kt:285)
    at androidx.compose.ui.node.BackwardsCompatNode.measure-3p2s80s(BackwardsCompatNode.kt:343)
    at androidx.compose.ui.node.LayoutModifierNodeCoordinator.measure-BRTryo0(LayoutModifierNodeCoordinator.kt:155)
    at androidx.compose.ui.graphics.SimpleGraphicsLayerModifier.measure-3p2s80s(GraphicsLayerModifier.kt:578)
    at androidx.compose.ui.node.BackwardsCompatNode.measure-3p2s80s(BackwardsCompatNode.kt:343)
    at androidx.compose.ui.node.LayoutModifierNodeCoordinator.measure-BRTryo0(LayoutModifierNodeCoordinator.kt:155)
    at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasure$2.invoke(LayoutNodeLayoutDelegate.kt:1090)
    at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasure$2.invoke(LayoutNodeLayoutDelegate.kt:1086)
    at androidx.compose.runtime.snapshots.Snapshot$Companion.observe(Snapshot.kt:2139)
    at androidx.compose.runtime.snapshots.SnapshotStateObserver$observeReads$1$1.invoke(SnapshotStateObserver.kt:130)
    at androidx.compose.runtime.snapshots.SnapshotStateObserver$observeReads$1$1.invoke(SnapshotStateObserver.kt:126)
    at androidx.compose.runtime.SnapshotStateKt__DerivedStateKt.observeDerivedStateRecalculations(DerivedState.kt:341)
    at androidx.compose.runtime.SnapshotStateKt.observeDerivedStateRecalculations(Unknown Source:1)
    at androidx.compose.runtime.snapshots.SnapshotStateObserver.observeReads(SnapshotStateObserver.kt:126)
    at androidx.compose.ui.node.OwnerSnapshotObserver.observeReads$ui_release(OwnerSnapshotObserver.kt:120)
    at androidx.compose.ui.node.OwnerSnapshotObserver.observeMeasureSnapshotReads$ui_release(OwnerSnapshotObserver.kt:107)

是否可以从多列 LazyVerticalGrid 中滑动？

Answer 1

不，你不能用标准实现来做到这一点。没有真正的设计模式可以让滑动关闭在网格上下文中有意义。

但是，如果您真的想做某事，您可能可以制作自己的自定义实现（但同样要注意，从用户的角度来看，他们可能不希望那里存在该功能）。您可以组合使用 LazyColumn 和 Row，然后在每个列项目上使用 Modifier.swipeable，而不是网格。

或者，如果您只想删除每一行而不让用户选择其他操作，您最好只创建一个删除每一行的按钮（类似于右上角的“X”）每一行）