customize Cancel button behavior (pause & remove notification)

y20k · Feb 21, 2021 · 1b6d63a · 1b6d63a
1 parent 375515e
commit 1b6d63a
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Showing 3 changed files with 26 additions and 32 deletions.
diff --git a/app/src/main/java/org/y20k/transistor/Keys.kt b/app/src/main/java/org/y20k/transistor/Keys.kt
@@ -71,6 +71,7 @@ object Keys {
     const val CMD_START_SLEEP_TIMER: String = "START_SLEEP_TIMER"
     const val CMD_CANCEL_SLEEP_TIMER: String = "CANCEL_SLEEP_TIMER"
     const val CMD_PLAY_STREAM: String = "PLAY_STREAM"
+    const val CMD_DISMISS_NOTIFICATION: String = "DISMISS_NOTIFICATION"
 
     // preferences
     const val PREF_RADIO_BROWSER_API: String = "RADIO_BROWSER_API"

diff --git a/app/src/main/java/org/y20k/transistor/helpers/NotificationHelper.kt b/app/src/main/java/org/y20k/transistor/helpers/NotificationHelper.kt
@@ -47,11 +47,11 @@ class NotificationHelper(private val context: Context, sessionToken: MediaSessio
     private val serviceJob = SupervisorJob()
     private val serviceScope = CoroutineScope(Main + serviceJob)
     private val notificationManager: PlayerNotificationManager
+    private val mediaController: MediaControllerCompat = MediaControllerCompat(context, sessionToken)
 
 
     /* Constructor */
     init {
-        val mediaController = MediaControllerCompat(context, sessionToken)
         notificationManager = PlayerNotificationManager.createWithNotificationChannel(
                 context,
                 Keys.NOW_PLAYING_NOTIFICATION_CHANNEL_ID,
@@ -65,7 +65,7 @@ class NotificationHelper(private val context: Context, sessionToken: MediaSessio
             setMediaSessionToken(sessionToken)
             setSmallIcon(R.drawable.ic_notification_app_icon_white_24dp)
             setUsePlayPauseActions(true)
-            setControlDispatcher(DefaultControlDispatcher(0L, 0L)) // hide fastforward and reweind
+            setControlDispatcher(Dispatcher())
             setUseStopAction(true) // set true to display the dismiss button
             setUsePreviousAction(false)
             setUsePreviousActionInCompactView(false)
@@ -94,6 +94,21 @@ class NotificationHelper(private val context: Context, sessionToken: MediaSessio
     }
 
 
+    /*
+     * Inner class: Intercept stop button tap
+     */
+    private inner class Dispatcher: DefaultControlDispatcher(0L, 0L /* hide fast forward and rewind */) {
+        override fun dispatchStop(player: Player, reset: Boolean): Boolean {
+            // Default implementation see: https://github.com/google/ExoPlayer/blob/b1000940eaec9e1202d9abf341a48a58b728053f/library/core/src/main/java/com/google/android/exoplayer2/DefaultControlDispatcher.java#L137
+            mediaController.sendCommand(Keys.CMD_DISMISS_NOTIFICATION, null, null)
+            return true
+        }
+    }
+    /*
+     * End of inner class
+     */
+
+
     /*
      * Inner class: Create content of notification from metaddata
      */

diff --git a/app/src/main/java/org/y20k/transistor/playback/PlayerService.kt b/app/src/main/java/org/y20k/transistor/playback/PlayerService.kt
@@ -302,9 +302,8 @@ class PlayerService(): MediaBrowserServiceCompat() {
         // save collection state and player state
         collection = CollectionHelper.savePlaybackState(this, collection, station, playbackState)
         updatePlayerState(station, playbackState)
-        // update media session
-        mediaSession.setPlaybackState(createPlaybackState(playbackState, 0))
-        mediaSession.isActive = playbackState != PlaybackStateCompat.STATE_STOPPED
+        // display notification (notification is hidden via CMD_DISMISS_NOTIFICATION)
+        if (player.isPlaying) notificationHelper.showNotificationForPlayer(player)
     }
 
 
@@ -395,32 +394,6 @@ class PlayerService(): MediaBrowserServiceCompat() {
     }
 
 
-    /* Creates playback state - actions for playback state to be used in media session callback */
-    private fun createPlaybackState(state: Int, position: Long): PlaybackStateCompat {
-        val skipActions: Long = PlaybackStateCompat.ACTION_FAST_FORWARD or PlaybackStateCompat.ACTION_REWIND or PlaybackStateCompat.ACTION_SKIP_TO_NEXT or  PlaybackStateCompat.ACTION_SKIP_TO_PREVIOUS
-        when(state) {
-            PlaybackStateCompat.STATE_PLAYING -> {
-                return PlaybackStateCompat.Builder()
-                        .setState(PlaybackStateCompat.STATE_PLAYING, position, 1f)
-                        .setActions(PlaybackStateCompat.ACTION_STOP or PlaybackStateCompat.ACTION_PAUSE or PlaybackStateCompat.ACTION_PREPARE_FROM_MEDIA_ID or skipActions)
-                        .build()
-            }
-            PlaybackStateCompat.STATE_PAUSED -> {
-                return PlaybackStateCompat.Builder()
-                        .setState(PlaybackStateCompat.STATE_PAUSED, position, 0f)
-                        .setActions(PlaybackStateCompat.ACTION_PLAY)
-                        .build()
-            }
-            else -> {
-                return PlaybackStateCompat.Builder()
-                        .setState(PlaybackStateCompat.STATE_STOPPED, position, 0f)
-                        .setActions(PlaybackStateCompat.ACTION_PLAY)
-                        .build()
-            }
-        }
-    }
-
-
     /* Starts sleep timer / adds default duration to running sleeptimer */
     private fun startSleepTimer() {
         // stop running timer
@@ -740,7 +713,12 @@ class PlayerService(): MediaBrowserServiceCompat() {
                     preparePlayer(true)
                     return true
                 }
-
+                Keys.CMD_DISMISS_NOTIFICATION -> {
+                    // pause playback and hide notification
+                    player.pause()
+                    notificationHelper.hideNotification()
+                    return true
+                }
                 else -> {
                     return false
                 }