Fixed multi-threaded initial download not showing. (#675)

Fixed library notification cancel PendingIntent.

app/src/main/java/eu/kanade/tachiyomi/data/download/Downloader.kt

@@ -10,6 +10,7 @@ import eu.kanade.tachiyomi.data.database.models.Manga
 import eu.kanade.tachiyomi.data.download.model.Download
 import eu.kanade.tachiyomi.data.download.model.DownloadQueue
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.preference.getOrDefault
 import eu.kanade.tachiyomi.source.SourceManager
 import eu.kanade.tachiyomi.source.model.Page
 import eu.kanade.tachiyomi.source.online.HttpSource
@@ -237,6 +238,9 @@ class Downloader(private val context: Context, private val provider: DownloadPro
         // Initialize queue size.
         notifier.initialQueueSize = queue.size
 
+        // Initial multi-thread
+        notifier.multipleDownloadThreads = preferences.downloadThreads().getOrDefault() > 1
+
         if (isRunning) {
             // Send the list of downloads to the downloader.
             downloadsRelay.call(chaptersToQueue)

app/src/main/java/eu/kanade/tachiyomi/data/notification/NotificationReceiver.kt

@@ -5,6 +5,7 @@ import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 import android.os.Handler
+import eu.kanade.tachiyomi.Constants
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.database.DatabaseHelper
 import eu.kanade.tachiyomi.data.database.models.Chapter
@@ -47,8 +48,7 @@ class NotificationReceiver : BroadcastReceiver() {
             ACTION_DELETE_IMAGE -> deleteImage(context, intent.getStringExtra(EXTRA_FILE_LOCATION),
                     intent.getIntExtra(EXTRA_NOTIFICATION_ID, -1))
             // Cancel library update and dismiss notification
-            ACTION_CANCEL_LIBRARY_UPDATE -> cancelLibraryUpdate(context,
-                    intent.getIntExtra(EXTRA_NOTIFICATION_ID, -1))
+            ACTION_CANCEL_LIBRARY_UPDATE -> cancelLibraryUpdate(context, Constants.NOTIFICATION_LIBRARY_ID)
             // Open reader activity
             ACTION_OPEN_CHAPTER -> {
                 openChapter(context, intent.getLongExtra(EXTRA_MANGA_ID, -1),