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Fix design assumption invalidated crash in MediaPreviewAdapter.

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2023-04-05 17:16:48 -04:00
committed by Greyson Parrelli
parent 48360d08d4
commit c834cb6ff7
1 changed files with 9 additions and 0 deletions
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9
app/src/main/java/org/thoughtcrime/securesms/mediapreview/MediaPreviewV2Adapter.kt
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@@ -11,6 +11,7 @@ import org.thoughtcrime.securesms.util.adapter.StableIdGenerator
class MediaPreviewV2Adapter(fragment: Fragment) : FragmentStateAdapter(fragment) {
private var items: List<Attachment> = listOf()
private val stableIdGenerator = StableIdGenerator<Attachment>()
private val currentIdSet: HashSet<Long> = HashSet()
override fun getItemCount(): Int {
return items.count()
@@ -44,6 +45,10 @@ class MediaPreviewV2Adapter(fragment: Fragment) : FragmentStateAdapter(fragment)
return fragment
}
override fun containsItem(itemId: Long): Boolean {
return currentIdSet.contains(itemId)
}
fun getFragmentTag(position: Int): String? {
if (items.isEmpty() || position < 0 || position > itemCount) {
return null
@@ -59,6 +64,10 @@ class MediaPreviewV2Adapter(fragment: Fragment) : FragmentStateAdapter(fragment)
fun updateBackingItems(newItems: Collection<Attachment>) {
if (newItems != items) {
items = newItems.toList()
currentIdSet.clear()
items.forEach {
currentIdSet.add(stableIdGenerator.getId(it))
}
notifyDataSetChanged()
}
}