优化

app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt

@@ -45,7 +45,9 @@ import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.flow.mapLatest
 
+@ExperimentalCoroutinesApi
 class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceViewModel>(),
     PopupMenu.OnMenuItemClickListener,
     BookSourceAdapter.CallBack,
@@ -207,6 +209,7 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
         searchView.setOnQueryTextListener(this)
     }
 
+
     private fun upBookSource(searchKey: String? = null) {
         sourceFlowJob?.cancel()
         sourceFlowJob = launch {
@@ -232,8 +235,7 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
                 }
             }.catch {
                 AppLog.put("书源界面更新书源出错", it)
-            }.collectLatest { data ->
-                val sourceList =
+            }.mapLatest { data ->
                 if (sortAscending) when (sort) {
                     Sort.Weight -> data.sortedBy { it.weight }
                     Sort.Name -> data.sortedWith { o1, o2 ->
@@ -268,7 +270,8 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
                     }
                     else -> data.reversed()
                 }
-                adapter.setItems(sourceList, adapter.diffItemCallback)
+            }.collectLatest { data ->
+                adapter.setItems(data, adapter.diffItemCallback)
             }
         }
     }