Categories
airplay avplayer ios mpnowplayinginfocenter

MPNowPlayingInfoCenter not reacting properly when pausing playback

I am trying to get MPNowPlayingInfoCenter to work properly when pausing playback. (I have a streaming music app that uses AVPlayer for playback, and I am playing back in my Apple TV over Airplay.) Everything but pausing seems to be reflected correctly in the Apple TV UI. I am initializing it like this:

MPNowPlayingInfoCenter *center = [MPNowPlayingInfoCenter defaultCenter];
NSDictionary *songInfo = @{
MPMediaItemPropertyTitle: title,
MPMediaItemPropertyArtist: artist
};
center.nowPlayingInfo = songInfo;

Since I am streaming, I do not have duration info upon starting the playback. When I get “ready” signal from the stream, I update the duration that shows up correctly on my Apple TV:

MPNowPlayingInfoCenter *center = [MPNowPlayingInfoCenter defaultCenter];
NSMutableDictionary *playingInfo = [NSMutableDictionary dictionaryWithDictionary:center.nowPlayingInfo];
[playingInfo setObject:[NSNumber numberWithFloat:length] forKey:MPMediaItemPropertyPlaybackDuration];
center.nowPlayingInfo = playingInfo;

I can also seek with this technique when the user seeks the track:

[playingInfo setObject:[NSNumber numberWithFloat:length * targetProgress] forKey:MPNowPlayingInfoPropertyElapsedPlaybackTime];

The one thing I can NOT figure out is, how to pause the playhead on my Apple TV. When user taps pause in my UI, I am trying to do something like:

MPNowPlayingInfoCenter *center = [MPNowPlayingInfoCenter defaultCenter];
NSMutableDictionary *playingInfo = [NSMutableDictionary dictionaryWithDictionary:center.nowPlayingInfo];
[playingInfo setObject:[NSNumber numberWithFloat:0.0f] forKey:MPNowPlayingInfoPropertyPlaybackRate];
center.nowPlayingInfo = playingInfo;

Instead of pausing, this seeks the playhead back to zero and keeps advancing it.

How do I get the playhead to pause correctly in my Apple TV UI?