DTVR iOS SDK

Engineering Portal / Digital / DCR & DTVR / DTVR iOS SDK

Prerequisites

To start using the App SDK, the following items are required:

	Item	Description	Source
☑	App ID (appid)	Unique ID assigned to the player/site and configured by product.	Contact Nielsen
☑	sfcode	Environment that the SDK must point to	Contact Nielsen
☑	Nielsen SDK	Includes SDK libraries and sample implementation; See iOS SDK Release Notes	Download

If you do not have any of these pre-requisites or if you have any questions, please contact our SDK sales support team. Refer to Digital Measurement Onboarding for more information on how to get a Nielsen App SDK and appid.

Import Library

Refer to Importing Frameworks for information on importing libraries.

• The latest version of App SDK allows instantiating multiple instances of App SDK object and can be used simultaneously without any issues.

Initialize SDK

Initialize App SDK as soon as the application is launched. Refer to Initialization for details on initializing an AppSDK object and the parameters required.

Configure and fire API calls

Configure API calls - play

Use play to pass the channel descriptor information through channelName parameter when the user taps the Play button on the player.

• channelName is a 32-character free-form text field containing the name of the program or feed being sent (such as ESPN2, Food Network, etc.)

Call play with channelName JSON as below.

    {
      "channelName": "TheMovieTitle"
    }

Configure API calls - loadMetadata

Use loadMetadata to pass ‘content’ and ‘ad’ Digital Measurement Metadata. The CMS data must be passed as a JSON object.

    – (void) loadMetadata :(id)metadata;

Refer to loadMetadata for the list of parameters to be passed in the JSON object. Call loadMetadata after the first play call. Call loadMetadata with JSON metadata for the active content as below.

    {
      "type": "content",
      "adModel": "1"
    }

Configure API calls - sendID3

sendID3 API is a receiver for timed metadata events (ID3 tags) provided through iOS’s NSNotificationCenter notification system. This API filters out Nielsen-specific ID3 tags from the system and buffers the data for transfer to Nielsen’s collection facility.

Sample ID3 tags

• www.nielsen.com/X100zdCIGeIlgZnkYj6UvQ==/X100zdCIGeIlgZnkYj6UvQ==/AAAB2Jz2_k74GXSzx4npHuI_JwJd3QSUpW30rDkGTcbHEzIMWleCzM-uvNOP9fzJcQMWQLJqzXMCAxParOb5sGijSV9dNM3QiBniJYGZ5GI-lL1fXTTN0IgZ4iWBmeRiPpS9AAAAAAAAAAAAAAAAAAAAAFJWFM5SVhTONNU=/00000/00000/00
• www.nielsen.com/X100zdCIGeIlgZnkYj6UvQ==/R8WHe7pEBeqBhu8jTeXydg==/AAICoyitYqlxT7n6aZ0oMCGheFi4CXFp46AMUPZz1lMr_M9tr3_cjee1SHqxrOiVerMDLeyn9xzocZSKwi746Re8vNOtpNCAZjYABs_J0R25IHpvOc1HS8QHGgD5TgOJeS6gX100zdCIGeIlgZnkYj6UvVJWFNhSVhTiPE0=/00000/46016/00

Refer to Retrieving ID3 Tags section to know more details.

Configure API calls - stop

Call stop in case of interruptions during playback like flight mode, Wi-Fi toggle, etc. Call play when resuming the stream / starting the new stream.

Configure API calls - end

Call end only at the end of playback.

Interruptions during playback

As part of integrating Nielsen App SDK with the player application, the Audio / Video app developer needs to handle the following possible interruption scenarios:

• Pause / Play
• Network Loss (Wi-Fi / Airplane / Cellular)
• Call Interrupt (SIM or Third party Skype / Hangout call)
• Alarm Interrupt
• Content Buffering
• Device Lock / Unlock (Video players only, not for Audio players)
• App going in the Background/Foreground (Video players only, not for Audio players)
• Channel / Station Change Scenario
• Unplugging of headphone

In case of encountering one of the above interruptions, the player application needs to

• Call stop immediately (except when content is buffering) and withhold sending playhead position.
• Start sending pings – loadMetadata and sendID3 for the new viewing session, once the playback resumes.

Please see the Digital Measurement FAQ for more details

Nielsen Measurement Opt-Out Implementation

As a global information and measurement leader, we are committed to protecting the privacy and security of the data we collect, process and use. Our digital measurement products are not used to identify the consumer in any way, but they help us and our clients measure and analyze how consumers engage with media across online, mobile and emerging technologies, and offer insights into consumer behavior.

• When the app user wants to opt in or opt out of Nielsen measurement, a new dynamic page (with content string obtained from optOutURL) should be displayed.
• Use optOutStatus to retrieve the device’s Opt-Out status.
• This Opt-out page should be displayed in a webview (within the app) and not in any external browser.
• Capture the user’s selection in this page and pass it to the SDK through userOptOut for Nielsen to save the user’s preference.

Testing an Implementation - App

See Digital Measurement Testing.