Design high quality Siri media interactions

Siri intent Coverage:

• These are the most popular Siri interactions with voice (covering 90% of all utterances):

• The better your Siri support is, the more likely it is that people will make more complicated Siri requests.

Vocabularies

• help Siri understand the user intent

• User vocabulary:

  • user/personalized items

  • shared with Siri via INVocabulary API

  • the items order is by priority (put more important items first)

let vocabulary = INVocabulary.shared()
let playlistNames = NSOrderedSet(objects: "70s punk classics")
vocabulary.setVocabularyStrings(playlistNames, of: .mediaPlaylistTitle) 

• • Here’s how to set it:

// Set our playlist title in user vocabulary so we get the proper Siri intent
let vocabulary = INVocabulary.shared()
let playlistNames = NSOrderedSet(objects: "70s punk classics")
vocabulary.setVocabularyStrings(playlistNames, of: .mediaPlaylistTitle)

• Global vocabulary:

  • general static vocabulary

  • defined in appIntentVocabulary.plist

  • only include things that are particular to your app, don’t include popular music or podcast entities, as those are generally already recognized by Siri as part of its NL model

  • example:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>ParameterVocabularies</key>
	<array>
		<dict>
			<key>ParameterNames</key>
			<array>
				<string>INPlayMediaIntent.playlistTitle</string>
			</array>
			<key>ParameterVocabulary</key>
			<array>
				<dict>
					<key>VocabularyItemSynonyms</key>
					<array>
						<dict>
							<key>VocabularyItemPhrase</key>
							<string>70s punk anthems</string>
						</dict>
					</array>          
					<key>VocabularyItemIdentifier</key>
					<string>70s punk anthems</string>
				</dict>
			</array>
		</dict>
	</array>
</dict>
</plist>

MPRemoteCommandCenter

• Use MPRemoteCommandCenter to handle playback intents like “next track” and more (this is the same center used to respond playback actions in the lock screen)

• Siri reads the center’s nowPlayingInfo to answer questions reguarding the current playing song (set properties such as MPMediaItemPropertyTitle, MPMediaItemPropertyArtist, MPMediaItemPropertyAlbumTitle)