Change Lock Screen Background Audio Controls Text

Change lock screen background audio controls text?

iOS 5 now supports setting the track title as well as an album art image in both the lock screen and the remote playback controls (the controls you get when you double-click the home button and swipe right). Take a look at the
MPNowPlayingInfoCenter class. Of course, to maximize compatibility, you'd want to test whether MPNowPlayingInfoCenter is available, by doing something like:

if ([MPNowPlayingInfoCenter class])  {
   /* we're on iOS 5, so set up the now playing center */
   UIImage *albumArtImage = [UIImage imageNamed:@"HitchHikersGuide"];
   albumArt = [[MPMediaItemArtwork alloc] initWithImage:albumArtImage];

    NSDictionary *currentlyPlayingTrackInfo = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:@"Life, the Universe and Everything", [NSNumber numberWithInt:42], albumArt, nil] forKeys:[NSArray arrayWithObjects:MPMediaItemPropertyTitle, MPMediaItemPropertyPlaybackDuration, MPMediaItemPropertyArtwork, nil]];
    [MPNowPlayingInfoCenter defaultCenter].nowPlayingInfo = currentlyPlayingTrackInfo;
}

AVPlayerLayer lock screen control

I got the solution simply used MPRemoteCommandCenter and added details about video see code in Objetive C

// to setup the playing info

- (void) setupNowPlayingInfoCenter{

    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
    [self becomeFirstResponder];

    MPRemoteCommandCenter *commandCenter = [MPRemoteCommandCenter sharedCommandCenter];
    [commandCenter.togglePlayPauseCommand setEnabled:YES];
    [commandCenter.playCommand setEnabled:YES];
    [commandCenter.pauseCommand setEnabled:YES];
    [commandCenter.nextTrackCommand setEnabled:NO];
    [commandCenter.previousTrackCommand setEnabled:NO];
    [commandCenter.playCommand addTargetWithHandler: ^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent * _Nonnull event) {
        [self->_player play];
        return MPRemoteCommandHandlerStatusSuccess;
    }];

    [commandCenter.pauseCommand addTargetWithHandler: ^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent * _Nonnull event) {
        [self->_player pause];
        return MPRemoteCommandHandlerStatusSuccess;
    }];
}

// to update the playing info when enter in background

- (void) updateNowPlayingInfoCenter {

    NSDictionary *metadata = [self.media metaData];
    MPNowPlayingInfoCenter *playingInfoCenter = [MPNowPlayingInfoCenter defaultCenter];
    NSMutableDictionary *songInfo = [[NSMutableDictionary alloc] init];
    [songInfo setObject:metadata[MIBMediaMetaDataTrackNameKey] forKey:MPMediaItemPropertyTitle];
    [songInfo setObject:metadata[MIBMediaMetaDataTrackNameKey] forKey:MPMediaItemPropertyArtist];
    [songInfo setObject:metadata[MIBMediaMetaDataTrackDurationKey] forKey:MPMediaItemPropertyPlaybackDuration];
    [songInfo setObject:[NSNumber numberWithDouble:(!self.playing ? 0.0f : 1.0f)] forKey:MPNowPlayingInfoPropertyPlaybackRate];
    [playingInfoCenter setNowPlayingInfo:songInfo];
}

// add this line of code in init or viewdidload

NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
        [center addObserver:self selector:@selector(applicationDidEnterBackgroundNotification:)
                       name:UIApplicationDidEnterBackgroundNotification
                     object:nil];

Called these 2 methods when enter in background

- (void)applicationDidEnterBackgroundNotification:(NSNotification *)notification {

     [self setupNowPlayingInfoCenter];
     [self updateNowPlayingInfoCenter];
}

Audio playback lock screen controls not displaying on iPhone

The issue turned out to be this line...

try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback, with: AVAudioSessionCategoryOptions.duckOthers)

Once I changed it to

try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback, with: [])

everything worked fine. So it seems that passing in any argument for AVAudioSessionCategoryPlaybackOptions causes the lock screen controls to not display. I also tried passing in .mixWithOthers an that too caused the lock screen controls to not be displayed

MPRemoteCommandCenter - Remote controls on lock screen does not show up

Remove .mixWithOthers from your category options.
I think the reasoning is that only the primary iOS audio app can control the remote screen. .mixWithOthers is for secondary audio apps.

How Do I Get Audio Controls on Lock Screen/Control Center from AVAudioPlayer in Swift

You need to invoke beginReceivingRemoteControlEvents() otherwise it will not work on the actual device.

Swift 3.1

UIApplication.shared.beginReceivingRemoteControlEvents()

If you would like to specify custom actions for the MPRemoteCommandCenter:

let commandCenter = MPRemoteCommandCenter.shared()
commandCenter.nextTrackCommand.isEnabled = true
commandCenter.nextTrackCommand.addTarget(self, action:#selector(nextTrackCommandSelector))

---

edit/update:

Apple has a sample project showing how to Becoming a Now Playable App

How to allow user to control current audio duration from LockScreen or ControlCenter in iOS?

Have you gone through MPRemoteCommandCenter methods and properties, I believe you can use the commands here to skip forward or backword.
I am afraid you won't get a smooth slider similar to iTunes music as they have not exposed anything like that for developers.

And for setting track duration on lock screen you have to set MPMediaItemPropertyPlaybackDuration like below::

MPNowPlayingInfoCenter *center = [MPNowPlayingInfoCenter defaultCenter];
            NSDictionary *songInfo = [NSDictionary dictionaryWithObjectsAndKeys:
                                      [NSNumber numberWithDouble:songDuration],MPMediaItemPropertyPlaybackDuration,
                                      nil];

            [center setNowPlayingInfo:songInfo];

---

Related Topics