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POMPNowPlayingInfoCenter not reacting properly when pausing playback
 

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  1. POMPNowPlayingInfoCenter not reacting properly when pausing playback
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    <p>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:</p> <pre><code>MPNowPlayingInfoCenter *center = [MPNowPlayingInfoCenter defaultCenter]; NSDictionary *songInfo = @{ MPMediaItemPropertyTitle: title, MPMediaItemPropertyArtist: artist }; center.nowPlayingInfo = songInfo; </code></pre> <p>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:</p> <pre><code>MPNowPlayingInfoCenter *center = [MPNowPlayingInfoCenter defaultCenter]; NSMutableDictionary *playingInfo = [NSMutableDictionary dictionaryWithDictionary:center.nowPlayingInfo]; [playingInfo setObject:[NSNumber numberWithFloat:length] forKey:MPMediaItemPropertyPlaybackDuration]; center.nowPlayingInfo = playingInfo; </code></pre> <p>I can also seek with this technique when the user seeks the track:</p> <pre><code>[playingInfo setObject:[NSNumber numberWithFloat:length * targetProgress] forKey:MPNowPlayingInfoPropertyElapsedPlaybackTime]; </code></pre> <p>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:</p> <pre><code>MPNowPlayingInfoCenter *center = [MPNowPlayingInfoCenter defaultCenter]; NSMutableDictionary *playingInfo = [NSMutableDictionary dictionaryWithDictionary:center.nowPlayingInfo]; [playingInfo setObject:[NSNumber numberWithFloat:0.0f] forKey:MPNowPlayingInfoPropertyPlaybackRate]; center.nowPlayingInfo = playingInfo; </code></pre> <p>Instead of pausing, this seeks the playhead back to zero and keeps advancing it.</p> <p>How do I get the playhead to pause correctly in my Apple TV UI?</p>
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    1. USJaanus
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    1. CODid you try just to pause your AVPlayer?
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      1. USRoman Temchenko
    2. CO@RomanTemchenko yes, when the user invokes pause UI control on device, then in addition to the infocenter experiments, I do `[player pause];` where `player` is an AVPlayer instance. It has no effect in Apple TV UI. The audio actually stops and resumes as expected, but the playback progress has the issues that I describe.
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      1. USJaanus
    3. COI could never get it to pause correctly, so instead, I set the duration, rate and position to zero. This had the effect of simply removing the progress bar for the time completely, which was good enough for my purposes.
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      1. USDavid Morton
 

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