优化

app/src/main/java/io/legado/app/service/DownloadService.kt

@@ -19,6 +19,7 @@ import io.legado.app.utils.msg
 import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
 import splitties.systemservices.downloadManager
 import java.io.File
@@ -77,10 +78,12 @@ class DownloadService : BaseService() {
     private fun checkDownloadState() {
         upStateJob?.cancel()
         upStateJob = launch {
+            while (isActive) {
                 queryState()
                 delay(1000)
             }
         }
+    }
 
     //查询下载进度
     private fun queryState() {