Merge pull request #13418 from Ecomont/fix/offline-comments-crash

Fix crash when loading offline comments in CommentRepliesSource

Author: TobiGr

app/src/main/java/org/schabi/newpipe/paging/CommentRepliesSource.kt

@@ -15,12 +15,20 @@ class CommentRepliesSource(
     private val service = NewPipe.getService(commentInfo.serviceId)
 
     override suspend fun load(params: LoadParams<Page>): LoadResult<Page, CommentsInfoItem> {
-        // params.key is null the first time load() is called, and we need to return the first page
-        val repliesPage = params.key ?: commentInfo.replies
-        val info = withContext(Dispatchers.IO) {
-            CommentsInfo.getMoreItems(service, commentInfo.url, repliesPage)
+        return try {
+            // params.key is null the first time load() is called, and we need to return the first page
+            val repliesPage = params.key ?: commentInfo.replies
+
+            val info = withContext(Dispatchers.IO) {
+                CommentsInfo.getMoreItems(service, commentInfo.url, repliesPage)
+            }
+
+            LoadResult.Page(info.items, null, info.nextPage)
+        } catch (e: Exception) {
+            // Catches UnknownHostException (offline) or any extraction errors
+            // and tells Paging3 to show the error state in the UI.
+            LoadResult.Error(e)
         }
-        return LoadResult.Page(info.items, null, info.nextPage)
     }
 
     override fun getRefreshKey(state: PagingState<Page, CommentsInfoItem>) = null