小编Man*_*oor的帖子

当我删除 mutableStateListOf 中的项目时，我收到 IndexOutOfBoundsException，其中 MyType 是某种自定义类型。myList 中有大约 250 项。这些项目将循环删除。几乎 6 个元素同时在视口中可见。当项目计数达到小于或等于 6（滚动位置位于顶部）时，会引发此异常并且应用程序崩溃。

此外，仅当 Listview 为活动屏幕时应用程序才会崩溃。否则它不会崩溃/不会引发此索引出界异常。我已经调试了应用程序逻辑，并确保进行检查以忽略索引大于列表大小的任何更新/添加/删除请求。我怀疑仅在重组期间引发异常。我观察到的另一个行为是，当列表滚动到底部并且项目被删除时，则在循环的最开始就已经引发了此异常。请查看堆栈跟踪。

FATAL EXCEPTION: main Process: com.XXX.YYY.ZZZ, PID: 16225 java.lang.IndexOutOfBoundsException: Index 6, size 6 at androidx.compose.foundation.lazy.layout.MutableIntervalList.checkIndexBounds(IntervalList.kt:177) at androidx.compose.foundation.lazy.layout.MutableIntervalList.get(IntervalList.kt:160) at androidx.compose.foundation.lazy.layout.DefaultLazyLayoutItemsProvider.getKey(LazyLayoutItemProvider.kt:232) at androidx.compose.foundation.lazy.LazyListItemProviderImpl.getKey(Unknown Source:2) at androidx.compose.foundation.lazy.layout.DefaultDelegatingLazyLayoutItemProvider.getKey(LazyLayoutItemProvider.kt:201) at androidx.compose.foundation.lazy.LazyListItemProviderKt$rememberLazyListItemProvider$1$1.getKey(Unknown Source:2) at androidx.compose.foundation.lazy.LazyMeasuredItemProvider.getAndMeasure-ZjPyQlc(LazyMeasuredItemProvider.kt:46) at androidx.compose.foundation.lazy.LazyListMeasureKt.measureLazyList-Hh3qtAg(LazyListMeasure.kt:164) at androidx.compose.foundation.lazy.LazyListKt$rememberLazyListMeasurePolicy$1$1.invoke-0kLqBqw(LazyList.kt:299) at androidx.compose.foundation.lazy.LazyListKt$rememberLazyListMeasurePolicy$1$1.invoke(LazyList.kt:190) at androidx.compose.foundation.lazy.layout.LazyLayoutKt$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$1.measure-3p2s80s(SubcomposeLayout.kt:598) at androidx.compose.ui.node.InnerNodeCoordinator.measure-BRTryo0(InnerNodeCoordinator.kt:103) at androidx.compose.ui.graphics.SimpleGraphicsLayerModifier.measure-3p2s80s(GraphicsLayerModifier.kt:635) at androidx.compose.ui.node.LayoutModifierNodeCoordinator.measure-BRTryo0(LayoutModifierNodeCoordinator.kt:155) at androidx.compose.foundation.layout.SizeModifier.measure-3p2s80s(Size.kt:781) at androidx.compose.ui.node.BackwardsCompatNode.measure-3p2s80s(BackwardsCompatNode.kt:323) at androidx.compose.ui.node.LayoutModifierNodeCoordinator.measure-BRTryo0(LayoutModifierNodeCoordinator.kt:155) at androidx.compose.ui.node.LayoutNodeLayoutDelegate$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:2200) at androidx.compose.runtime.snapshots.SnapshotStateObserver$observeReads$1$1.invoke(SnapshotStateObserver.kt:234) at androidx.compose.runtime.snapshots.SnapshotStateObserver$observeReads$1$1.invoke(SnapshotStateObserver.kt:230) at androidx.compose.runtime.SnapshotStateKt__DerivedStateKt.observeDerivedStateRecalculations(DerivedState.kt:341) at …