优化

app/src/main/java/io/legado/app/ui/main/bookshelf/style2/BookshelfFragment2.kt

@@ -25,10 +25,12 @@ import io.legado.app.ui.book.search.SearchActivity
 import io.legado.app.ui.main.bookshelf.BaseBookshelfFragment
 import io.legado.app.utils.*
 import io.legado.app.utils.viewbindingdelegate.viewBinding
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.conflate
+import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
 import kotlin.math.max
@@ -138,7 +140,7 @@ class BookshelfFragment2 : BaseBookshelfFragment(R.layout.fragment_bookshelf1),
                         it.durChapterTime
                     }
                 }
-            }.catch {
+            }.flowOn(Dispatchers.Default).catch {
                 AppLog.put("书架更新出错", it)
             }.conflate().collect { list ->
                 books = list