I am creating an app that has a playlist and uses the MediaPlayer library. When a song ends I don't want the next song to start. I tried to use the MPMusicPlayerControllerNowPlayingItemDidChangeNotification to pause the music player when the song changes, but the song starts to play before I get the chance to stop it. I also tried to use KVO to track the changes to musicPlayer.currentPlaybackTime, but I only receive messages when i manually change the playback time. I can't find any information about this problem anywhere.
In my app I have shuffle and repeat off, and create a queue with only one song in it, then send that to the music player. When the song finishes, there aren't any other songs in the queue, so it stops playing.
That being said, the latest iOS update has stopped reporting the correct playback state when the song finishes and is reporting it as paused when it used to be stopped. Not sure if that's a side-effect of the above method or not.
Are you calling:
player.beginGeneratingPlaybackNotifications()
before adding the observers?
Related
I've tried multiple flutter plug-ins to stream and play and pause music but as of currently, I haven't yet figured out a simple way to implement play and pause, whilst having the ability to avoid music overlapping, I want so that when the current song is playing, if I were to press play on new music track, the current song playing will stop and play the newly pressed song. I've tried flutter_sound, audio player, audio file player, and flute music player but I can't seem to figure out how to do this.
If it is possible either using one of these or a new plug-in, is there a way to implement what I have just described.
The library you seek is more of a multi-track player than a player. Which does not currently exists AFAIK.
The simplest way is to act according to the status of the tracks (which should be given by the player).
Roughly, what I suggest: have something that keeps the status (e.g. paused, playing, completed) of each track. (e.g. List of Tracks) When you press play on track 2 or track 1 finishes playing, you set to 'completed' (or as you wish) the track 1 and set to 'playing' the track 2.
Have a listener on the status of the current track and voila (for autoplay). When the track completes, notify the listener to call a function to start the next one on your list. When you press another track, set to 'completed' the current track and to 'playing' the track you pressed, then notify listeners.
Any library letting you know the status of a track is good enough for your purpose.
I'm playing a silent music with AVAudioPlayer when user locks the screen, so that my timers won't stop.
However, when I play an iPod music with [MPMusicPlayerController applicationMusicPlayer], AVAudioPlayer stops,without receiving any call back.
Is there any way so that I can start [MPMusicPlayerController applicationMusicPlayer] playing without stoping AVAudioPlayer playing?
EDIT:
Thanks guys, this is the app I'm working on:
It is an Alarm app, this app allows user to lock screen while app is running,and when it is the time of the alarm, app can play iPod music to wake the user.Local notification can not use iPod music as alert sound, so I have to keep the app running while screen is locked.
If user quit the app, it will use local notification as alarm, whose sound is limited to files in bundle.
I can't use UILocalNotification as timer since when in screen locked status（in UIApplicationStatusInactive), app can't receive local notification generated by the system.
Apple has architected their backgrounding system to really limit things like this from happening. Essentially, there is no way for the you to keep the application running in the background unless it needs to be there. If you explain what you are trying to accomplish, maybe a better solution can be found but as good practice, never use random backgrounding methods to do other things. I am assuming that you might be using the faint music as a way to show something custom on the main screen, this is not a good idea.
Your app will get rejected if you play a silent audio.
Also as per apple's documentation https://developer.apple.com/library/ios/#documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/IPhoneOSClientImp/IPhoneOSClientImp.html#//apple_ref/doc/uid/TP40008194-CH103, notifications cannot have sounds (soundName) which play more than 30 seconds.
So you wont be able to release your app in the store.
I figured it out myself.
It is not calling [MPMusicPlayerController +applicationMusicPlayer] that stops AVAudioPlayer, but calling [MPMusicPlayerController -setShuffleMode:], I don't know why calling this would stop AVAudioPlayer, but it is where the problem lies in.
Thanks everyone, I think I should paste my complete code next time.
I am using MPMoviePlayerController to play streaming audio. I'm trying to get background audio working correctly. Right now, audio continues to play when you exit the app - the lock-screen and multi-tasking bar controls even work.
When a song finishes, the app is supposed to advance to the next track and play it. It works when the app is open but not when it is in the background (a song finishes but does not advance to the next track). If a song finishes and you re-open the app, however, the next song will start up immediately.
I am currently using NSNotificationCenter to keep track of when tracks end to advance to the next track (in my app delegate). Again, it works like a charm when the app is open. Is there a better way to do this to keep audio playing after a song is done?
I had this issue lately. Hope the answer helps other people.
If you have a playlist for example and want to play the next song while in background mode or lock mode add this line of code on your viewDidLoad:
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
This makes the app supports remote control events.
I am using AudioQueueStart for playing music and AudioQueuePause for pausing. Is there any way in AudioQueues to check whether the music is playing or not, I want to Pause music only if it is playing.
Check the kAudioQueueProperty_IsRunning property with AudioQueueGetProperty.
Or seeing as you're the one stopping and starting the queue, just remember the state you set and act accordingly.
Is there a way to update the 'listened to' status of an MPMediaItem from the iPod library?
I've tried using MPMusicPlayerController in iPodMusicPlayer mode and it does not mark the podcast as listened to once it finishes playing.
As far as I can see it's not possible to change media attributes from MPMusicPlayer controller.
The only thing you could try play back the podcast and jump to the last second, then play back the last second (and turn the volume to 0 for that second).
But this is no good way as well because, you have play back something this causes a stop of every other iPod playback.