优化

app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceDialog.kt

@@ -47,7 +47,7 @@ class ChangeSourceDialog() : BaseDialogFragment(),
     private val adapter by lazy { ChangeSourceAdapter(requireContext(), viewModel, this) }
     private val editSourceResult =
         registerForActivityResult(StartActivityForResult(BookSourceEditActivity::class.java)) {
-
+            viewModel.startSearch()
         }
 
 
@@ -178,7 +178,7 @@ class ChangeSourceDialog() : BaseDialogFragment(),
                 putPrefBoolean(PreferKey.changeSourceLoadInfo, !item.isChecked)
                 item.isChecked = !item.isChecked
             }
-            R.id.menu_stop -> viewModel.stopSearch()
+            R.id.menu_stop -> viewModel.startOrStopSearch()
             R.id.menu_source_manage -> startActivity<BookSourceActivity>()
             else -> if (item?.groupId == R.id.source_group) {
                 if (!item.isChecked) {
@@ -188,7 +188,7 @@ class ChangeSourceDialog() : BaseDialogFragment(),
                     } else {
                         putPrefString("searchGroup", item.title.toString())
                     }
-                    viewModel.stopSearch()
+                    viewModel.startOrStopSearch()
                     viewModel.loadDbSearchBook()
                 }
             }

app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceViewModel.kt

@@ -25,6 +25,7 @@ import java.util.concurrent.CopyOnWriteArraySet
 import java.util.concurrent.Executors
 import kotlin.math.min
 
+@Suppress("MemberVisibilityCanBePrivate")
 class ChangeSourceViewModel(application: Application) : BaseViewModel(application) {
     private val threadCount = AppConfig.threadCount
     private var searchPool: ExecutorCoroutineDispatcher? = null
@@ -104,8 +105,9 @@ class ChangeSourceViewModel(application: Application) : BaseViewModel(applicatio
         upAdapter()
     }
 
-    private fun startSearch() {
+    fun startSearch() {
         execute {
+            stopSearch()
             appDb.searchBookDao.clear(name, author)
             searchBooks.clear()
             upAdapter()
@@ -218,15 +220,19 @@ class ChangeSourceViewModel(application: Application) : BaseViewModel(applicatio
         }
     }
 
-    fun stopSearch() {
+    fun startOrStopSearch() {
         if (tasks.isEmpty) {
             startSearch()
         } else {
+            stopSearch()
+        }
+    }
+
+    fun stopSearch() {
         tasks.clear()
         searchPool?.close()
         searchStateData.postValue(false)
     }
-    }
 
     override fun onCleared() {
         super.onCleared()