View source for iOS Sequence of Calls

== Sequence of Calls ==
=== play ===
Call <code>play</code> at the start of each new stream. If changing videos or watching a new video, call <code>play()</code> each time. 

Objective C<syntaxhighlight lang="objective-c">   [nielsenAppApi play:()];</syntaxhighlight>
Swift <syntaxhighlight lang="swift">nielsenAppApi?.play();</syntaxhighlight>

=== loadMetadata ===

Objective C <syntaxhighlight lang="objective-c">[nielsenApi loadMetadata:(contentMetadata)];</syntaxhighlight>
Swift <syntaxhighlight lang="swift">self.nielsenAppApi?.loadMetadata(contentMetadata)</syntaxhighlight>

=== playheadPosition ===
Objective C <syntaxhighlight lang="objective-c">

-(void) setPlayHeadPosition {
    
    //Setting play head position
    CMTime timeInterval = CMTimeMakeWithSeconds(1, 1);
    [player addPeriodicTimeObserverForInterval:(timeInterval) queue:dispatch_get_main_queue() usingBlock:^(CMTime time){
        NSTimeInterval seconds = CMTimeGetSeconds(time);
        NSInteger intSec = seconds;
        
        //Sending data dictionary to SDK with updated playHead position.
        [nielsenApi playheadPosition:(intSec)];
    }];
}
</syntaxhighlight>

Swift <syntaxhighlight lang="swift">
        //Monitor the Playhead position of the AVPlayer
        let timeInterval: CMTime = CMTimeMakeWithSeconds(1.0,10)
        self.avPlayerViewController.player?.addPeriodicTimeObserver(forInterval: timeInterval, queue: DispatchQueue.main) {(elapsedTime: CMTime) -> Void in
            if self.avPlayerViewController.player!.currentItem?.status == .readyToPlay {
                let time : Float64 = self.avPlayerViewController.player!.currentTime().seconds;
                let pos = Int64(time);
                NSLog("New Elapse Time = \(time)");
                self.nielsenAppApi?.playheadPosition(pos);
            }
        }
    }
</syntaxhighlight>

=== stop ===
Objective C <syntaxhighlight lang="objective-c">[nielsenApi stop];</syntaxhighlight>
Swift <syntaxhighlight lang="swift">nielsenApi.stop()</syntaxhighlight>

=== end ===
When content stop is initiated and content cannot be resumed from the same position (it can only be restarted from the beginning of stream).
Objective C <syntaxhighlight lang="objective-c">[nielsenApi end];</syntaxhighlight>
Swift <syntaxhighlight lang="swift">nielsenApi.end()</syntaxhighlight>