[stable-24.0.x] fix(chat): avoid ClassCastException when building FileParameters - #6481
Merged
Merged
Conversation
ChatMessageUi.messageParameters is built via Kotlin's toMap(), which
returns a Collections.SingletonMap for a single entry instead of a
HashMap. Both call sites unsafely cast it to
HashMap<String?, HashMap<String?, String?>>?, which crashes whenever a
message has exactly one rich-object parameter (e.g. a plain file
share) - the common case for FileParameters.
Build real HashMap instances from messageParameters instead of casting
it. Also removes a runCatching block in
LazyListState.visibleItemsWithThreshold() that silently swallowed the
same ClassCastException, which was hiding this bug and causing file id
lookups to fail there.
fixed crash:
❯ 2026-08-07 12:02:40.777 28629-28629 NextcloudT...pplication com.nextcloud.talk2 E Uncaught exception in thread "main" (Fix with AI)
java.lang.ClassCastException: java.util.Collections$SingletonMap cannot be cast to
java.util.HashMap
at com.nextcloud.talk.ui.chat.MediaMessageKt.MediaMessage(MediaMessage.kt:71)
at
com.nextcloud.talk.ui.chat.ChatMessageViewKt.ChatMessageView$lambda$5$1(ChatMessageView.kt:151)
at
com.nextcloud.talk.ui.chat.ChatMessageViewKt.$r8$lambda$BiaHdWRFag7qJIfvY45CugWWbIY(ChatMessageView.kt:0)
at
com.nextcloud.talk.ui.chat.ChatMessageViewKt$$ExternalSyntheticLambda1.invoke(D8$$SyntheticClass:0)
at
androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.kt:122)
at
androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.kt:52)
at
com.nextcloud.talk.ui.chat.SwipeToReplyContainerKt.SwipeToReplyContainer(SwipeToReplyContainer.kt:57)
at
com.nextcloud.talk.ui.chat.ChatMessageViewKt.ChatMessageView$lambda$5(ChatMessageView.kt:114)
at
com.nextcloud.talk.ui.chat.ChatMessageViewKt$$ExternalSyntheticLambda4.invoke(D8$$SyntheticClass:0)
at
androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.kt:122)
at
androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.kt:52)
at
androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:408)
at
com.nextcloud.talk.ui.chat.ChatMessageViewKt.ChatMessageView(ChatMessageView.kt:105)
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Signed-off-by: Marcel Hibbe <dev@mhibbe.de>
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Backport of PR #6465