Strange behavior of MPMusicPlayerController.currentPlaybackTime

Question

While a song is being played, I tried to get currentPlaybackTime.

        NSLog(@"Playback: %f", appDelegate.appMusicPlayer.currentPlaybackTime);

I always got "Playback: nan". The application gets the currentPlaybackTime correctly when running (not debugging). The LLDB debugger also gives the correct currentPlaybackTime.

Does anyone know what going on with this property?

Answer 1

I would have commented on this but since I don't have enough reputation to do so... According to this solution (I know, it's for MPMoviePlayerController but since both conform to the MPMediaPlayback Protocol this may be useful):

https://stackoverflow.com/a/10652551/3374794

You'll probably have to wait 1ms (1/1000 s) for the player to (?load?) the item.

MPMediaPlayBack Protocol Reference