顯示當前時間和剩餘時間

您可以顯示正在播放的內容的當前時間和剩餘時間。

1. 要實現顯示活動內容的當前時間和剩餘時間的顯示，請使用以下示例代碼：

   // 1. Register for the PTMediaPlayerTimeChangeNotification
   [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onMediaPlayerTimeChange:)
     name:PTMediaPlayerTimeChangeNotification object:self.player];
   
   ...
   
   // 2. Create labels for displaying current and remaining time
   _timeCurrentLabel = [[UILabel alloc] initWithFrame:CGRectMake(50.0, 16.0, 50.0, 21.0)];
   _timeCurrentLabel.text = @"00:00:00";
   _timeCurrentLabel.font = [UIFont boldSystemFontOfSize:12.0];
   _timeCurrentLabel.numberOfLines = 1;
   _timeCurrentLabel.textAlignment = UITextAlignmentCenter;
   _timeCurrentLabel.backgroundColor = [UIColor clearColor];
   _timeCurrentLabel.textColor =
     [UIColor colorWithRed:209.0/255.0 green:209.0/255.0 blue:209.0/255.0 alpha:1.0];
   [self addSubview:_timeCurrentLabel];
   
   _timeRemainingLabel = [[UILabel alloc] initWithFrame:CGRectMake(485.0, 16.0, 50.0, 21.0)];
   _timeRemainingLabel.text = @"00:00:00";
   _timeRemainingLabel.font = [UIFont boldSystemFontOfSize:12.0];
   _timeRemainingLabel.numberOfLines = 1;
   _timeRemainingLabel.textAlignment = UITextAlignmentCenter;
   _timeRemainingLabel.backgroundColor = [UIColor clearColor];
   _timeRemainingLabel.textColor =
     [UIColor colorWithRed:209.0/255.0 green:209.0/255.0 blue:209.0/255.0 alpha:1.0];
   
   ...
   
   // 3. This method is called whenever the player time changes
   (PTMediaPlayerTimeChangeNotification) - (void) onMediaPlayerTimeChange:(NSNotification *)notification {
       //The seekable range provides the playback range of a stream
       CMTimeRange seekableRange = self.player.seekableRange;
   
       //Verify if the seekableRange is a valid CMTimeRange
       if (CMTIMERANGE_IS_VALID(seekableRange)) {
           double  duration = CMTimeGetSeconds(seekableRange.duration);
           double currentTime = CMTimeGetSeconds(self.player.currentItem.currentTime);
           if (CMTIME_IS_INDEFINITE(self.player.currentItem.duration)) {
               //If the duration is indefinite then the content is live.
               [_timeCurrentLabel setText:[NSString stringWithFormat:@"--:--"]];
               [_timeRemainingLabel setText:[NSString stringWithFormat:@"Live"]];
           }
           else {
               [_timeCurrentLabel setText:[self timeFormatter:currentTime]];
               [_timeRemainingLabel setText:[self timeFormatter:(duration - currentTime)]];
           }
       }
   }
   

2. 要實現顯示廣告進度和剩餘時間的顯示，請使用以下示例代碼：

   double adBreakDurationLeft;
   double adBreakDuration;
   float currentAdPosition;
   (void)onMediaPlayerAdBreakStarted:(NSNotification *) notification
   {
   PTAdBreak *adBreak = [notification.userInfo objectForKey:PTMediaPlayerAdBreakKey];
   self.adBreakDuration = CMTimeGetSeconds(adBreak.range.duration);
   self.adBreakDurationLeft = self.adBreakDuration;
   }
   (void)onMediaPlayerAdBreakCompleted:(NSNotification *) notification
   {
   self.adBreakDuration = 0.0f;
   self.adBreakDurationLeft = 0.0f;
   }
   (void)onMediaPlayerAdPlayStarted:(NSNotification *) notification
   {
   self.currentAdPosition = 0;
   }
   (void)onMediaPlayerAdPlayProgress:(NSNotification *) notification
   {
   PTAd *ad = [notification.userInfo objectForKey:PTMediaPlayerAdKey];
   CMTime progress = [(NSValue *)[notification.userInfo objectForKey:PTMediaPlayerAdProgressKey] CMTimeValue];
   if (ad != nil) { // remaining ad playback time in milliseconds self.currentAdPosition = CMTimeGetSeconds(progress); double timeLeft = self.adBreakDurationLeft - (double)self.currentAdPosition; float currentprogress = 1.0f - (timeLeft/self.adBreakDuration); }
   }
   (void)onMediaPlayerAdPlayCompleted:(NSNotification *) notification
   {
   PTAd *ad = [notification.userInfo objectForKey:PTMediaPlayerAdKey];
   self.adBreakDurationLeft = self.adBreakDurationLeft - ad.primaryAsset.duration;
   }
   

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