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fix(ios): fix lock screen controls not working on first play #2583

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fix(ios): fix lock screen controls not working on first play #2583

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22 changes: 21 additions & 1 deletion ios/TrackPlayer.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -244,12 +244,16 @@ public class NativeTrackPlayerImpl: NSObject, AudioSessionControllerDelegate {
// activate the audio session when there is an item to be played
// and the player has been configured to start when it is ready loading:
if (player.playWhenReady) {
try? audioSessionController.activateSession()
// Set the category BEFORE activating the session so that the session
// activates with .playback (required for lock screen controls).
// Previously, activateSession() was called first, which caused the
// session to activate with the default .soloAmbient category.
if #available(iOS 11.0, *) {
try? AVAudioSession.sharedInstance().setCategory(sessionCategory, mode: sessionCategoryMode, policy: sessionCategoryPolicy, options: sessionCategoryOptions)
} else {
try? AVAudioSession.sharedInstance().setCategory(sessionCategory, mode: sessionCategoryMode, options: sessionCategoryOptions)
}
try? audioSessionController.activateSession()
}
}

Expand Down Expand Up @@ -468,6 +472,22 @@ public class NativeTrackPlayerImpl: NSObject, AudioSessionControllerDelegate {
public func play(resolve: RCTPromiseResolveBlock, reject: RCTPromiseRejectBlock) {
if (rejectWhenNotInitialized(reject: reject)) { return }
player.play()

// Synchronously publish now playing info so it is available immediately
// when the lock screen renders. The NowPlayingInfoController in SwiftAudioEx
// publishes asynchronously via a concurrent dispatch queue, which can race
// against the lock screen appearing — the info is still nil when iOS queries it.
// This is observable when the user locks the screen immediately after pressing play.
if let item = player.currentItem {
var nowPlayingInfo = MPNowPlayingInfoCenter.default().nowPlayingInfo ?? [:]
nowPlayingInfo[MPMediaItemPropertyTitle] = item.getTitle()
nowPlayingInfo[MPMediaItemPropertyArtist] = item.getArtist()
nowPlayingInfo[MPMediaItemPropertyAlbumTitle] = item.getAlbumTitle()
nowPlayingInfo[MPNowPlayingInfoPropertyPlaybackRate] = 1.0
nowPlayingInfo[MPMediaItemPropertyPlaybackDuration] = (item as? Track)?.duration
MPNowPlayingInfoCenter.default().nowPlayingInfo = nowPlayingInfo
}

resolve(NSNull())
}

Expand Down