Widget abnormal refresh
My app is a music application. When playing or pausing a song, the status is synchronized to NowPlaying, and the app itself supports widgets. During testing, I found that when pausing or playing music, the widget triggers a timeline refresh, which is completely unexpected. However, switching songs does not cause this.
Looking at Apple’s logs:
By default 21:27:08.094490+0800 mediaremoted Set: origin-iPhone-1280262988/client-com.company.musicdev-10059 (music)/player-MediaRemote-DefaultPlayer setting inferred playback state from <Playing> to <Paused>
By default 21:27:08.094607+0800 mediaremoted [MRDNowPlayingPlayerClient] PlaybackState changed from Playing to Paused for origin-iPhone-1280262988/client-com.company.musicdev-10059 (music)/player-MediaRemote-DefaultPlayer
By default 21:27:08.094713+0800 mediaremoted [MRDNowPlayingPlayerClient] isPlaying changed to false for origin-iPhone-1280262988/client-com.company.musicdev-10059 (music)/player-MediaRemote-DefaultPlayer
By default 21:27:08.111861+0800 mediaremoted Posted Active Now Playing Notification kMRMediaRemoteNowPlayingApplicationPlaybackStateDidChangeNotification for path origin-iPhone-1280262988/client-com.company.musicdev-10059 (music)/player-MediaRemote-DefaultPlayer
By default 21:27:08.115550+0800 mediaremoted Response: handlePlaybackQueueRequest<B0BDBB4E-C539-4D39-B51C-718115EBD7C4 assistantd-2659 /M/L/AF/R[0:1]> returned <MRPlaybackQueue> for origin-iPhone-1280262988/client-com.company.musicdev-10059 (music)/player-MediaRemote-DefaultPlayer in 0.0005 seconds
By default 21:27:08.119344+0800 assistantd Response: playbackQueue<B0BDBB4E-C539-4D39-B51C-718115EBD7C4 assistantd-2659 /M/L/AF/R[0:1]> returned <<private>> for origin-iPhone-1280262988/client-com.company.musicdev-10059 (music)/player-MediaRemote-DefaultPlayer in 0.0010 seconds
By default 21:27:08.122322+0800 SpringBoard Response: playbackState<63A30582-E3C2-4F4D-AC57-8E5841FAD568> returned <Paused> for origin-iPhone-1280262988/client-com.company.musicdev-10059 (music)/player-MediaRemote-DefaultPlayer in 0.0005 seconds
By default 21:27:08.126132+0800 chronod Observed com.company.musicdev stopped running for exempt reason: nowPlaying - remainingReasons: None By default 21:27:08.126285+0800 chronod [com.company.musicdev::com.company.musicdev.musicdesktopwidget:VisionWidget_medium4158108784:systemMedium:3758765227620768254:338.00/158.00/21.60:(null)~(null)] on local marked as requiring reload
By default 21:27:08.126455+0800 chronod [com.company.musicdev::com.company.musicdev.musicdesktopwidget:VisionWidget_medium4158108784:3758765227620768254] Reload with configuration [systemRequest(sessionEnded)-immediate-free-1] By default 21:27:08.126854+0800 mediaremoted Response: handlePlaybackQueueRequest<ACF764D9-05A6-41FF-8BB5-8CB81A8BC163 assistantd-2659 /M/L/AF/R[0:1]> returned <MRPlaybackQueue> for origin-iPhone-1280262988/client-com.company.musicdev-10059 (music)/player-MediaRemote-DefaultPlayer in 0.0008 seconds
By default 21:27:08.127960+0800 assistantd Response: playbackQueue<ACF764D9-05A6-41FF-8BB5-8CB81A8BC163 assistantd-2659 /M/L/AF/R[0:1]> returned <<private>> for origin-iPhone-1280262988/client-com.company.musicdev-10059 (music)/player-MediaRemote-DefaultPlayer in 0.0016 seconds
By default 21:27:08.128091+0800 wifid Response: playbackState<F0DBBEE5-802E-4898-AFA9-A27D1F7648B9> returned <Paused> for origin-iPhone-1280262988/client-com.company.musicdev-10059 (music)/player-MediaRemote-DefaultPlayer in 0.0115 seconds
When the music state changes, you can see the widget is triggered to refresh. I want to ask if this is the system’s mechanism? I checked my code and there is no operation to actively refresh the widget when pausing or playing. Can this situation be avoided?