Merge pull request #4496 from kiwix/Fixes#4495

Improved the startup behavior of `DownloadMonitorService`.

Author: kelson42

core/src/main/java/org/kiwix/kiwixmobile/core/downloader/downloadManager/DownloadMonitorService.kt

@@ -124,12 +124,15 @@ class DownloadMonitorService : Service() {
    * until there are no active downloads, at which point the service is stopped.
    */
   private fun showDownloadServiceForegroundNotification() {
+    // Start the foreground service immediately before going to background.
+    downloadNotificationChannel()
+    startForeground(DOWNLOAD_SERVICE_NOTIFICATION_ID, buildForegroundNotification())
     fetch.getDownloadsWithStatus(
       listOf(Status.NONE, Status.ADDED, Status.QUEUED, Status.DOWNLOADING, Status.PAUSED)
     ) { activeDownloads ->
       if (activeDownloads.isNotEmpty()) {
-        downloadNotificationChannel()
-        startForeground(DOWNLOAD_SERVICE_NOTIFICATION_ID, buildForegroundNotification())
+        // Update the notification.
+        notificationManager.notify(DOWNLOAD_SERVICE_NOTIFICATION_ID, buildForegroundNotification())
       } else {
         // Stop the foreground service if no active downloads.
         stopForegroundServiceForDownloads()

core/src/main/java/org/kiwix/kiwixmobile/core/main/CoreMainActivity.kt

@@ -256,9 +256,14 @@ abstract class CoreMainActivity : BaseActivity(), WebViewProvider {
     super.onStart()
     externalLinkOpener.setAlertDialogShower(alertDialogShower)
     rateDialogHandler.setAlertDialogShower(alertDialogShower)
+    rateDialogHandler.checkForRateDialog(getIconResId())
+  }
+
+  override fun onResume() {
+    super.onResume()
+    // Resume in-app download monitoring now that the app is visible again.
     downloadMonitor.startMonitoringDownload()
     stopDownloadServiceIfRunning()
-    rateDialogHandler.checkForRateDialog(getIconResId())
   }
 
   /**
@@ -276,10 +281,12 @@ abstract class CoreMainActivity : BaseActivity(), WebViewProvider {
     }
   }
 
-  override fun onStop() {
+  override fun onPause() {
+    // Start the DownloadService as the app is about to enter the background,
+    // so downloads can continue even if the app is no longer in the foreground.
     startMonitoringDownloads()
     downloadMonitor.stopListeningDownloads()
-    super.onStop()
+    super.onPause()
   }
 
   /**