Fixed Downloader Notifaction + added placeholder download

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

@@ -77,6 +77,10 @@ class DownloadManager(val context: Context) {
         downloader.stop(reason)
     }
 
+    fun setPlaceholder() {
+        downloader.setPlaceholder()
+    }
+
     /**
      * Tells the downloader to pause downloads.
      */
@@ -218,7 +222,7 @@ class DownloadManager(val context: Context) {
         if(!wasPaused && downloader.queue.isNotEmpty()){
             downloader.start()
         }
-        else if (downloader.queue.isEmpty()) {
+        else if (downloader.queue.isEmpty() && DownloadService.isRunning(context)) {
             DownloadService.stop(context)
         }
         queue.remove(chapters)

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

@@ -33,27 +33,11 @@ internal class DownloadNotifier(private val context: Context) {
      */
     private var isDownloading = false
 
-    /**
-     * The size of queue on start download.
-     */
-    var initialQueueSize = 0
-        set(value) {
-            if (value != 0) {
-                isSingleChapter = (value == 1)
-            }
-            field = value
-        }
-
     /**
      * Updated when error is thrown
      */
     var errorThrown = false
 
-    /**
-     * Updated when only single page is downloaded
-     */
-    var isSingleChapter = false
-
     /**
      * Updated when paused
      */
@@ -84,6 +68,48 @@ internal class DownloadNotifier(private val context: Context) {
         context.notificationManager.cancel(Notifications.ID_DOWNLOAD_CHAPTER)
     }
 
+    fun setPlaceholder(download: Download?) {
+        with(notification) {
+            // Check if first call.
+            if (!isDownloading) {
+                setSmallIcon(android.R.drawable.stat_sys_download)
+                setAutoCancel(false)
+                clearActions()
+                // Open download manager when clicked
+                setContentIntent(NotificationHandler.openDownloadManagerPendingActivity(context))
+                isDownloading = true
+                // Pause action
+                addAction(R.drawable.ic_av_pause_grey_24dp_img,
+                    context.getString(R.string.action_pause),
+                    NotificationReceiver.pauseDownloadsPendingBroadcast(context))
+            }
+
+            if (download != null) {
+                val title = download.manga.currentTitle().chop(15)
+                val quotedTitle = Pattern.quote(title)
+                val chapter = download.chapter.name.replaceFirst("$quotedTitle[\\s]*[-]*[\\s]*"
+                    .toRegex(RegexOption.IGNORE_CASE), "")
+                setContentTitle("$title - $chapter".chop(30))
+                setContentText(
+                    context.getString(R.string.chapter_downloading)
+                )
+            }
+            else {
+                setContentTitle(
+                    context.getString(
+                        R.string.chapter_downloading
+                    )
+                )
+                setContentText(null)
+            }
+            setProgress(0,0, true)
+            setStyle(null)
+        }
+        // Displays the progress bar on notification
+        notification.show()
+
+    }
+
     /**
      * Called when download progress changes.
      *
@@ -133,13 +159,17 @@ internal class DownloadNotifier(private val context: Context) {
             // Open download manager when clicked
             setContentIntent(NotificationHandler.openDownloadManagerPendingActivity(context))
             // Resume action
-            addAction(R.drawable.ic_av_play_arrow_grey_img,
-                    context.getString(R.string.action_resume),
-                    NotificationReceiver.resumeDownloadsPendingBroadcast(context))
+            addAction(
+                R.drawable.ic_av_play_arrow_grey_img,
+                context.getString(R.string.action_resume),
+                NotificationReceiver.resumeDownloadsPendingBroadcast(context)
+            )
             //Clear action
-            addAction(R.drawable.ic_clear_grey_24dp_img,
-                    context.getString(R.string.action_cancel_all),
-                    NotificationReceiver.clearDownloadsPendingBroadcast(context))
+            addAction(
+                R.drawable.ic_clear_grey_24dp_img,
+                context.getString(R.string.action_cancel_all),
+                NotificationReceiver.clearDownloadsPendingBroadcast(context)
+            )
         }
 
         // Show notification.
@@ -147,40 +177,6 @@ internal class DownloadNotifier(private val context: Context) {
 
         // Reset initial values
         isDownloading = false
-        initialQueueSize = 0
-    }
-
-    /**
-     * Called when chapter is downloaded.
-     *
-     * @param download download object containing download information.
-     */
-    fun onDownloadCompleted(download: Download, queue: DownloadQueue) {
-        // Check if last download
-        if (!queue.isEmpty()) {
-            return
-        }
-        // Create notification.
-        with(notification) {
-            val title = download.manga.currentTitle().chop(15)
-            val quotedTitle = Pattern.quote(title)
-            val chapter = download.chapter.name.replaceFirst("$quotedTitle[\\s]*[-]*[\\s]*".toRegex(RegexOption.IGNORE_CASE), "")
-            setContentTitle("$title - $chapter".chop(30))
-            setContentText(context.getString(R.string.update_check_notification_download_complete))
-            setSmallIcon(android.R.drawable.stat_sys_download_done)
-            setAutoCancel(true)
-            clearActions()
-            setContentIntent(NotificationReceiver.openChapterPendingActivity(context, download
-                .manga, download.chapter))
-            setProgress(0, 0, false)
-        }
-
-        // Show notification.
-        notification.show()
-
-        // Reset initial values
-        isDownloading = false
-        initialQueueSize = 0
     }
 
     /**

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

@@ -18,6 +18,7 @@ import eu.kanade.tachiyomi.data.notification.Notifications
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.util.lang.plusAssign
 import eu.kanade.tachiyomi.util.system.connectivityManager
+import eu.kanade.tachiyomi.util.system.isServiceRunning
 import eu.kanade.tachiyomi.util.system.powerManager
 import eu.kanade.tachiyomi.util.system.toast
 import rx.android.schedulers.AndroidSchedulers
@@ -61,6 +62,16 @@ class DownloadService : Service() {
         fun stop(context: Context) {
             context.stopService(Intent(context, DownloadService::class.java))
         }
+
+        /**
+         * Returns the status of the service.
+         *
+         * @param context the application context.
+         * @return true if the service is running, false otherwise.
+         */
+        fun isRunning(context: Context): Boolean {
+            return context.isServiceRunning(DownloadService::class.java)
+        }
     }
 
     /**
@@ -91,6 +102,7 @@ class DownloadService : Service() {
     override fun onCreate() {
         super.onCreate()
         startForeground(Notifications.ID_DOWNLOAD_CHAPTER, getPlaceholderNotification())
+        downloadManager.setPlaceholder()
         runningRelay.call(true)
         subscriptions = CompositeSubscription()
         listenDownloaderState()

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

@@ -15,12 +15,12 @@ import eu.kanade.tachiyomi.source.model.Page
 import eu.kanade.tachiyomi.source.online.HttpSource
 import eu.kanade.tachiyomi.source.online.fetchAllImageUrlsFromPageList
 import eu.kanade.tachiyomi.util.lang.RetryWithDelay
-import eu.kanade.tachiyomi.util.system.launchNow
-import eu.kanade.tachiyomi.util.system.launchUI
 import eu.kanade.tachiyomi.util.lang.plusAssign
 import eu.kanade.tachiyomi.util.storage.DiskUtil
 import eu.kanade.tachiyomi.util.storage.saveTo
 import eu.kanade.tachiyomi.util.system.ImageUtil
+import eu.kanade.tachiyomi.util.system.launchNow
+import eu.kanade.tachiyomi.util.system.launchUI
 import kotlinx.coroutines.async
 import okhttp3.Response
 import rx.Observable
@@ -126,12 +126,14 @@ class Downloader(
             notifier.onWarning(reason)
         } else {
             if (notifier.paused) {
-                notifier.paused = false
-                if (queue.isEmpty()) notifier.dismiss()
-                else notifier.onDownloadPaused()
-            } else if (notifier.isSingleChapter && !notifier.errorThrown) {
-                notifier.isSingleChapter = false
-            } else {
+                if (queue.isEmpty()) {
+                    notifier.dismiss()
+                }
+                else {
+                    notifier.paused = false
+                    notifier.onDownloadPaused()
+                }
+            }else {
                 notifier.dismiss()
             }
         }
@@ -185,7 +187,7 @@ class Downloader(
         }
         queue.remove(manga)
         if (queue.isEmpty()) {
-            DownloadService.stop(context)
+            if (DownloadService.isRunning(context)) DownloadService.stop(context)
             stop()
         }
         notifier.dismiss()
@@ -253,9 +255,6 @@ class Downloader(
             if (chaptersToQueue.isNotEmpty()) {
                 queue.addAll(chaptersToQueue)
 
-                // Initialize queue size.
-                notifier.initialQueueSize = queue.size
-
                 if (isRunning) {
                     // Send the list of downloads to the downloader.
                     downloadsRelay.call(chaptersToQueue)
@@ -276,7 +275,7 @@ class Downloader(
     private fun downloadChapter(download: Download): Observable<Download> = Observable.defer {
         val chapterDirname = provider.getChapterDirName(download.chapter)
         val mangaDir = provider.getMangaDir(download.manga, download.source)
-        val tmpDir = mangaDir.createDirectory("${chapterDirname}_tmp")
+        val tmpDir = mangaDir.createDirectory(chapterDirname + TMP_DIR_SUFFIX)
 
         val pageListObservable = if (download.pages == null) {
             // Pull page list from network and add them to download object
@@ -479,13 +478,14 @@ class Downloader(
             queue.remove(download)
         }
         if (areAllDownloadsFinished()) {
-            if (notifier.isSingleChapter && !notifier.errorThrown) {
-                notifier.onDownloadCompleted(download, queue)
-            }
             DownloadService.stop(context)
         }
     }
 
+    fun setPlaceholder() {
+        notifier.setPlaceholder(queue.firstOrNull())
+    }
+
     /**
      * Returns true if all the queued downloads are in DOWNLOADED or ERROR state.
      */

app/src/main/java/eu/kanade/tachiyomi/ui/main/MainActivity.kt

@@ -85,7 +85,7 @@ open class MainActivity : BaseActivity() {
         this.snackBar = snackBar
         canDismissSnackBar = false
         launchUI {
-            delay(1000)
+            delay(5000)
             canDismissSnackBar = true
         }
         extraViewForUndo = extraViewToCheck