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AndroidTV Oreo Dip kaelaela(Yuichi Maekawa) AbemaTV @ CyberAgent, Inc

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Outline ● Overview of AndroidTV ● AndroidTV Oreo features ● What is new in Oreo? ● What is Recommendation Channels? ● How to implement new recommendations & tips

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AndroidTV

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AndroidTV ● Simple remote controls

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AndroidTV ● Simple remote controls ● A large screen UX

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AndroidTV✖Oreo

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Supported device in Japan Supported only “Nexus Player” in Japan now...

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Suppert soon https://www.cccair.co.jp/airstick/

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Suppert soon https://www.nttdocomo.co.jp/product/docomo_select/tt01/index.html

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What’s new in Oreo?

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What’s new in Oreo? http://blog.kaelae.la/entry/2018/02/04/162915

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Video https://youtu.be/LMB9B6Z__bM

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Oreo feature in AndroidTV ● Media first ● Google Asistant ● Update home screen

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Oreo feature in AndroidTV ● Media first ● Google Asistant ● Update home screen

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Oreo feature in AndroidTV ● Media first ● Google Asistant ● Update home screen Today’s main!

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Renew recommendations

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Legacy recommendation’s problem

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Legacy recommendation’s problem ● Only one column for all apps ● Can not change order ● Use NotificationManager

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https://android-developers.googleblog.com/2017/12/phasing-out-legacy-recommendations-on.html

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Phasing out legacy recommendations ● Phase out legacy recommendations over the year ● But, Google migrate legacies automatically now ○ Add each app’s channel ○ All legacies are added to each app's channel ● If your app do not update ○ Add all legacy recommendations to one channel ○ And it is added to bottom of the channel list!!

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How to develop new recommendations? ● You need careful consideration of Spec. ● Structure of new recommendations ● ContentProvider & ContentResolver ● Implement recommendations

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Consider of Spec

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Consider of Spec ● What recommendate content in your app? ● When update contents? ● User can delete recomenndation anytime! Favorite contents? Related contents? Checked artist? Update every day? New series? season?

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Structure of new recommendations

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ContentProvider & BroadcastReceiver Android System ContentProvider Other Application BroadcastReceiver BroadcastReceiver Home Application BroadcastReceiver BroadcastReceiver Your App TV’s BroadcastReceiver BroadcastReceiver ・・・ ・・・ ・・・ ・・・

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ContentProvider & BroadcastReceiver Android System ContentProvider Other Application BroadcastReceiver BroadcastReceiver Home Application BroadcastReceiver BroadcastReceiver Your App TV’s BroadcastReceiver BroadcastReceiver ・・・ ・・・ ・・・ ・・・

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ContentProvider & BroadcastReceiver Android System ContentProvider Other Application BroadcastReceiver BroadcastReceiver Home Application BroadcastReceiver BroadcastReceiver Your App TV’s BroadcastReceiver BroadcastReceiver ・・・ ・・・ ・・・ ・・・ ・・・ TV contents

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ContentProvider & BroadcastReceiver Android System ContentProvider Other Application BroadcastReceiver BroadcastReceiver Home Application BroadcastReceiver BroadcastReceiver Your App TV’s BroadcastReceiver BroadcastReceiver ・・・ ・・・ ・・・ ・・・ ・・・ TV contents

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Understanding ContentProvider

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Uri content://authority/path?query=value ContentProvider

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ContentProvider(content://XXX) Uri content://authority/path?query=value ContentProvider

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ContentProvider(content://XXX) MediaStore(media/) Uri content://authority/path?query=value ・・・ TvContract(android.media.tv/) App(your_authority/) ContentProvider

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ContentProvider(content://XXX) MediaStore(media/) Audio Video Image Uri content://authority/path?query=value ・・・ TvContract(android.media.tv/) RecodedPrograms PreviewPrograms Programs WatchNextPrograms Channels ・・・ ・・・ ・・・ App(your_authority/) ContentProvider

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ContentProvider(content://) MediaStore(media/) ・・・ TvContract(android.media.tv/) App(your_authority/) ContentResolver Application ContentResolver

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ContentProvider(content://) MediaStore(media/) ・・・ TvContract(android.media.tv/) App(your_authority/) ContentResolver Application ContentResolver Query

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ContentProvider(content://) MediaStore(media/) ・・・ TvContract(android.media.tv/) App(your_authority/) ContentResolver Application Query ContentResolver Cursor

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ContentResolver Use TvContractCompat.XXX.CONTENT_URI Or TvContractCompat.buildXXXUri(id) ● insert(Uri url, ContentValues values) ● bulkInsert(Uri url, ContentValues[] values) ● update(Uri url, ContentValues values, String where, String[] selectionArgs) ● delete(Uri url, ContentValues values, String where, String[] selectionArgs) ● query(Uri url, String[] projection, String selection, String[] selectionArgs, String sortOrder)

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Implement recommendations

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1.Prepare library and permissions

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Add support library to build.gradle dependencies { ... implementation "com.android.support:support-tv-provider:27.0.2" ... }

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Add permissions to AndroidManifest.xml

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READ(WRITE)_EPG_DATA permission ContentProvider(content://XXX) MediaStore(media/) Audio Video Image Uri content://authority/path?query=value ・・・ TvContract(android.media.tv/) RecodedPrograms PreviewPrograms Programs WatchNextPrograms Channels ・・・ ・・・ ・・・ App(your_authority/)

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ContentProvider(content://XXX) MediaStore(media/) Audio Video Image ・・・ ・・・ ・・・ ・・・ App(your_authority/) READ(WRITE)_EPG_DATA permission Uri content://android.media.tv/~~~ TvContract(android.media.tv/) RecodedPrograms PreviewPrograms Programs WatchNextPrograms Channels Ac e s

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2.BroadcastReceiver 1. Prepare library and permissions

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Create BroadcastReceiver class RecommendationBroadcastReceiver : BroadcastReceiver() { override fun onReceive(c: Context, i: Intent) { if (i.action != TvContractCompat.ACTION_INITIALIZE_PROGRAMS) return RecommendationJobService.startJob(c) } }

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Create BroadcastReceiver class RecommendationBroadcastReceiver : BroadcastReceiver() { override fun onReceive(c: Context, i: Intent) { if (i.action != TvContractCompat.ACTION_INITIALIZE_PROGRAMS) return RecommendationJobService.startJob(c) } } ?

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android.media.tv.action.INITIALIZE_PROGRAMS

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android.media.tv.action.INITIALIZE_PROGRAMS Android System ContentProvider Other Application BroadcastReceiver BroadcastReceiver Home Application BroadcastReceiver BroadcastReceiver Your App TV’s BroadcastReceiver BroadcastReceiver ・・・ ・・・ ・・・ ・・・

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android.media.tv.action.INITIALIZE_PROGRAMS Android System ContentProvider Other Application BroadcastReceiver BroadcastReceiver Home Application BroadcastReceiver BroadcastReceiver Your App TV’s BroadcastReceiver BroadcastReceiver ・・・ ・・・ ・・・ ・・・

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android.media.tv.action.INITIALIZE_PROGRAMS document

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android.media.tv.action.INITIALIZE_PROGRAMS document Broadcast Action: sent to the target TV input after it is first installed to notify the input to initialize its channels and programs to the system content provider.

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android.media.tv.action.INITIALIZE_PROGRAMS document Broadcast Action: sent to the target TV input after it is first installed to notify the input to initialize its channels and programs to the system content provider.

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android.media.tv.action.INITIALIZE_PROGRAMS But, we can not check on local... ... D/PackageUpdatesReceiver: Trying to send ACTION_INITIALIZE_PROGRAMS to ~~~(your app) D/PackageUpdatesReceiver: No permissions, blacklisted or not from the play store ... Logcat

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We need a solution

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Receive another intent action e.g. android.intent.action.BOOT_COMPLETED android.intent.action.MY_PACKAGE_REPLACED

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Receive another intent action e.g. android.intent.action.BOOT_COMPLETED android.intent.action.MY_PACKAGE_REPLACED NOTE! Background executions are limited from Oreo. https://developer.android.com/about/versions/ oreo/background.html https://developer.android.com/guide/component s/broadcast-exceptions.html

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Run on app launch class App : Application() { override fun onCreate() { ... RecommendationJobService.startJob(c) } } or class MainActivity : AppCompatActivity() { override fun onCreate() { ... RecommendationJobService.startJob(c) } }

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Run on app launch class App : Application() { override fun onCreate() { ... RecommendationJobService.startJob(c) } } or class MainActivity : AppCompatActivity() { override fun onCreate() { ... RecommendationJobService.startJob(c) } } Be careful! TV apps are updated automatically by default. If the user app do not open, your recommendations will be not appear.

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3.Create channel 1. Prepare library and permissions 2. BroadcastReceiver

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Create channel fun createChannel(): Channel { val appUri = Uri.parse(Config.APP_SCHEME + "://" + Config.AUTHORITY) return Channel.Builder() .setType(TvContractCompat.Channels.TYPE_PREVIEW) .setDisplayName(CHANNEL_TITLE) .setAppLinkIntentUri(appUri).build() }

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Create channel fun createChannel(): Channel { val appUri = Uri.parse(Config.APP_SCHEME + "://" + Config.AUTHORITY) return Channel.Builder() .setType(TvContractCompat.Channels.TYPE_PREVIEW) .setDisplayName(CHANNEL_TITLE) .setAppLinkIntentUri(appUri).build() }

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Create channel fun createChannel(): Channel { val appUri = Uri.parse(Config.APP_SCHEME + "://" + Config.AUTHORITY) return Channel.Builder() .setType(TvContractCompat.Channels.TYPE_PREVIEW) .setDisplayName(CHANNEL_TITLE) .setAppLinkIntentUri(appUri).build() }

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Create channel fun createChannel(): Channel { val appUri = Uri.parse(Config.APP_SCHEME + "://" + Config.AUTHORITY) return Channel.Builder() .setType(TvContractCompat.Channels.TYPE_PREVIEW) .setDisplayName(CHANNEL_TITLE) .setAppLinkIntentUri(appUri).build() }

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Create channel fun createChannel(): Channel { val appUri = Uri.parse(Config.APP_SCHEME + "://" + Config.AUTHORITY) return Channel.Builder() .setType(TvContractCompat.Channels.TYPE_PREVIEW) .setDisplayName(CHANNEL_TITLE) .setAppLinkIntentUri(appUri).build() }

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Create channel fun createChannel(): Channel { val appUri = Uri.parse(Config.APP_SCHEME + "://" + Config.AUTHORITY) return Channel.Builder() .setType(TvContractCompat.Channels.TYPE_PREVIEW) .setDisplayName(CHANNEL_TITLE) .setAppLinkIntentUri(appUri).build() }

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● The channel is usually added by the user ● The default channel is not added by the user ● The default channel is added by the app ● The default channel is only 1/app ● You should never delete the default channel Default channel

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Check default channel existance fun startJob(c: Context) { val cr = c.contentResolver val channels = loadChannels(cr) if (channels.isEmpty()) { //create default channel val channel = createChannel(c.getString(R.string.app_name)) val defaultChannelId = insertChannel(cr, channel) c.saveDefaultChannelId(defaultChannelId) setDefaultChannel(c, defaultChannelId) } scheduleProgramJob(c) }

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Check default channel existance fun startJob(c: Context) { val cr = c.contentResolver val channels = loadChannels(cr) if (channels.isEmpty()) { //create default channel val channel = createChannel() val defaultChannelId = insertChannel(cr, channel) c.saveDefaultChannelId(defaultChannelId) setDefaultChannel(c, defaultChannelId) } scheduleProgramJob(c) } No c n

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Check default channel existance fun startJob(c: Context) { val cr = c.contentResolver val channels = loadChannels(cr) if (channels.isEmpty()) { //create default channel val channel = createChannel() val defaultChannelId = insertChannel(cr, channel) c.saveDefaultChannelId(defaultChannelId) setDefaultChannel(c, defaultChannelId) } scheduleProgramJob(c) }

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Check default channel existance fun startJob(c: Context) { val cr = c.contentResolver val channels = loadChannels(cr) if (channels.isEmpty()) { //create default channel val channel = createChannel() val defaultChannelId = insertChannel(cr, channel) c.saveDefaultChannelId(defaultChannelId) setDefaultChannel(c, defaultChannelId) } scheduleProgramJob(c) }

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Insert channel to provider fun insertChannel(cr: ContentResolver, channel: Channel): Long { val uri = cr.insert(TvContractCompat.Channels.CONTENT_URI, channel.toContentValues()) return ContentUris.parseId(uri) }

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Insert channel to provider fun insertChannel(cr: ContentResolver, channel: Channel): Long { val uri = cr.insert(TvContractCompat.Channels.CONTENT_URI, channel.toContentValues()) return ContentUris.parseId(uri) }

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Insert channel to provider fun insertChannel(cr: ContentResolver, channel: Channel): Long { val uri = cr.insert(TvContractCompat.Channels.CONTENT_URI, channel.toContentValues()) return ContentUris.parseId(uri) } //java public static long parseId(Uri contentUri) { String last = contentUri.getLastPathSegment(); return last == null ? -1 : Long.parseLong(last); }

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Check default channel existence fun startJob(c: Context) { val cr = c.contentResolver val channels = loadChannels(cr) if (channels.isEmpty()) { //create default channel val channel = createChannel() val defaultChannelId = insertChannel(cr, channel) c.saveDefaultChannelId(defaultChannelId) setDefaultChannel(c, defaultChannelId) } scheduleProgramJob(c) } Sav u l

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Check default channel existence fun startJob(c: Context) { val cr = c.contentResolver val channels = loadChannels(cr) if (channels.isEmpty()) { //create default channel val channel = createChannel() val defaultChannelId = insertChannel(cr, channel) c.saveDefaultChannelId(defaultChannelId) setDefaultChannel(c, defaultChannelId) } scheduleProgramJob(c) }

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Set default channel @TargetApi(Build.VERSION_CODES.O) private fun setDefaultChannel(c: Context, channelId: Long) { val res = c.resources val logoId = R.drawable.ic_tv_channel_80dp val logoUri = Uri.parse( ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + res.getResourcePackageName(logoId) + "/" + res.getResourceTypeName(logoId) + "/" + res.getResourceEntryName(logoId)) ChannelLogoUtils.storeChannelLogo(c, channelId, logoUri) TvContractCompat.requestChannelBrowsable(c, channelId) }

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@TargetApi(Build.VERSION_CODES.O) private fun setDefaultChannel(c: Context, channelId: Long) { val res = c.resources val logoId = R.drawable.ic_tv_channel_80dp val logoUri = Uri.parse( ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + res.getResourcePackageName(logoId) + "/" + res.getResourceTypeName(logoId) + "/" + res.getResourceEntryName(logoId)) ChannelLogoUtils.storeChannelLogo(c, channelId, logoUri) TvContractCompat.requestChannelBrowsable(c, channelId) } Def ic ze Set default channel

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@TargetApi(Build.VERSION_CODES.O) private fun setDefaultChannel(c: Context, channelId: Long) { val res = c.resources val logoId = R.drawable.ic_tv_channel_80dp val logoUri = Uri.parse( ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + res.getResourcePackageName(logoId) + "/" + res.getResourceTypeName(logoId) + "/" + res.getResourceEntryName(logoId)) ChannelLogoUtils.storeChannelLogo(c, channelId, logoUri) TvContractCompat.requestChannelBrowsable(c, channelId) } Set default channel

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@TargetApi(Build.VERSION_CODES.O) private fun setDefaultChannel(c: Context, channelId: Long) { val res = c.resources val logoId = R.drawable.ic_tv_channel_80dp val logoUri = Uri.parse( ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + res.getResourcePackageName(logoId) + "/" + res.getResourceTypeName(logoId) + "/" + res.getResourceEntryName(logoId)) ChannelLogoUtils.storeChannelLogo(c, channelId, logoUri) TvContractCompat.requestChannelBrowsable(c, channelId) } Set default channel

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@TargetApi(Build.VERSION_CODES.O) private fun setDefaultChannel(c: Context, channelId: Long) { val res = c.resources val logoId = R.drawable.ic_tv_channel_80dp val logoUri = Uri.parse( ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + res.getResourcePackageName(logoId) + "/" + res.getResourceTypeName(logoId) + "/" + res.getResourceEntryName(logoId)) ChannelLogoUtils.storeChannelLogo(c, channelId, logoUri) TvContractCompat.requestChannelBrowsable(c, channelId) } Make the TYPE_PREVIEW channel browsable. This api is valid only once. Set default channel

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4.Create programs 1. Prepare library and permissions 2. BroadcastReceiver 3. Create channel

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Create program fun buildProgram(channelId: Long, content: Content ): PreviewProgram { val programUri = Uri.parse(APP_SCHEME + "://" + AUTHORITY + "/" + CONTENT_PATH) return PreviewProgram.Builder() .setChannelId(channelId) .setType(TvContractCompat.PreviewPrograms.TYPE_CHANNEL) .setTitle(content.title) .setDescription(content.description) .setPosterArtUri(content.thumbnail) .setIntentUri(programUri) .setInternalProviderId(content.id) .build() }

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Create program fun buildProgram(channelId: Long, content: Content ): PreviewProgram { val programUri = Uri.parse(APP_SCHEME + "://" + AUTHORITY + "/" + CONTENT_PATH) return PreviewProgram.Builder() .setChannelId(channelId) .setType(TvContractCompat.PreviewPrograms.TYPE_CHANNEL) .setTitle(content.title) .setDescription(content.description) .setPosterArtUri(content.thumbnail) .setIntentUri(programUri) .setInternalProviderId(content.id) .build() }

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Create program fun buildProgram(channelId: Long, content: Content ): PreviewProgram { val programUri = Uri.parse(APP_SCHEME + "://" + AUTHORITY + "/" + CONTENT_PATH) return PreviewProgram.Builder() .setChannelId(channelId) .setType(TvContractCompat.PreviewPrograms.TYPE_CHANNEL) .setTitle(content.title) .setDescription(content.description) .setPosterArtUri(content.thumbnail) .setIntentUri(programUri) .setInternalProviderId(content.id) .build() }

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Create program fun buildProgram(channelId: Long, content: Content ): PreviewProgram { val programUri = Uri.parse(APP_SCHEME + "://" + AUTHORITY + "/" + CONTENT_PATH) return PreviewProgram.Builder() .setChannelId(channelId) .setType(TvContractCompat.PreviewPrograms.TYPE_CHANNEL) .setTitle(content.title) .setDescription(content.description) .setPosterArtUri(content.thumbnail) .setIntentUri(programUri) .setInternalProviderId(content.id) .build() }

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Create program fun buildProgram(channelId: Long, content: Content ): PreviewProgram { val programUri = Uri.parse(APP_SCHEME + "://" + AUTHORITY + "/" + CONTENT_PATH) return PreviewProgram.Builder() .setChannelId(channelId) .setType(TvContractCompat.PreviewPrograms.TYPE_CHANNEL) .setTitle(content.title) .setDescription(content.description) .setPosterArtUri(content.thumbnail) .setIntentUri(programUri) .setInternalProviderId(content.id) .build() }

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No content

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Create program fun buildProgram(channelId: Long, content: Content ): PreviewProgram { val programUri = Uri.parse(APP_SCHEME + "://" + AUTHORITY + "/" + CONTENT_PATH) return PreviewProgram.Builder() .setChannelId(channelId) .setType(TvContractCompat.PreviewPrograms.TYPE_CHANNEL) .setTitle(content.title) .setDescription(content.description) .setPosterArtUri(content.thumbnail) .setIntentUri(programUri) .setInternalProviderId(content.id) .build() }

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Create program fun buildProgram(channelId: Long, content: Content ): PreviewProgram { val programUri = Uri.parse(APP_SCHEME + "://" + AUTHORITY + "/" + CONTENT_PATH) return PreviewProgram.Builder() .setChannelId(channelId) .setType(TvContractCompat.PreviewPrograms.TYPE_CHANNEL) .setTitle(content.title) .setDescription(content.description) .setPosterArtUri(content.thumbnail) .setIntentUri(programUri) .setInternalProviderId(content.id) .build() }

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Create program fun buildProgram(channelId: Long, content: Content ): PreviewProgram { val programUri = Uri.parse(APP_SCHEME + "://" + AUTHORITY + "/" + CONTENT_PATH) return PreviewProgram.Builder() .setChannelId(channelId) .setType(TvContractCompat.PreviewPrograms.TYPE_CHANNEL) .setTitle(content.title) .setDescription(content.description) .setPosterArtUri(content.thumbnail) .setIntentUri(programUri) .setInternalProviderId(content.id) .build() }

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Create program fun buildProgram(channelId: Long, content: Content ): PreviewProgram { val programUri = Uri.parse(APP_SCHEME + "://" + AUTHORITY + "/" + CONTENT_PATH) return PreviewProgram.Builder() .setChannelId(channelId) .setType(TvContractCompat.PreviewPrograms.TYPE_CHANNEL) .setTitle(content.title) .setDescription(content.description) .setPosterArtUri(content.thumbnail) .setIntentUri(programUri) .setInternalProviderId(content.id) .build() }

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Insert your programs to channel @TargetApi(Build.VERSION_CODES.O) private fun insertPrograms(programs: List): Int { programs.map { it.toContentValues() } .toList() .let { return cr.bulkInsert( TvContractCompat.PreviewPrograms.CONTENT_URI, it.toTypedArray()) } }

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@TargetApi(Build.VERSION_CODES.O) private fun insertPrograms(programs: List): Int { programs.map { it.toContentValues() } .toList() .let { return cr.bulkInsert( TvContractCompat.PreviewPrograms.CONTENT_URI, it.toTypedArray()) } } Insert your programs to channel Con t /va ap

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@TargetApi(Build.VERSION_CODES.O) private fun insertPrograms(programs: List): Int { programs.map { it.toContentValues() } .toList() .let { return cr.bulkInsert( TvContractCompat.PreviewPrograms.CONTENT_URI, it.toTypedArray()) } } Insert your programs to channel

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Back to create channel... fun startJob(c: Context) { val cr = c.contentResolver val channels = loadChannels(cr) if (channels.isEmpty()) { //create default channel val channel = createChannel() val defaultChannelId = insertChannel(cr, channel) c.saveDefaultChannelId(defaultChannelId) setDefaultChannel(c, defaultChannelId) } scheduleProgramJob(c) }

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Want to periodic update fun startJob(c: Context) { val cr = c.contentResolver val channels = loadChannels(cr) if (channels.isEmpty()) { //create default channel val channel = createChannel() val defaultChannelId = insertChannel(cr, channel) c.saveDefaultChannelId(defaultChannelId) setDefaultChannel(c, defaultChannelId) } scheduleProgramJob(c) } If you want to periodic update, you have to make JobService!!

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5.Schedule your job 1. Prepare library and permissions 2. BroadcastReceiver 3. Create channel 4. Create programs

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { override fun onStartJob(params: JobParameters?): Boolean { val channelId = loadDefaultChannelId() val programs = createPrograms(channelId, YOUR_CONTENTS) bulkInsertPrograms(contentResolver, programs) jobFinished(params, true) return true } override fun onStopJob(params: JobParameters?): Boolean { jobFinished(params, false) return false } }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { override fun onStartJob(params: JobParameters?): Boolean { val channelId = loadDefaultChannelId() val programs = createPrograms(channelId, YOUR_CONTENTS) bulkInsertPrograms(contentResolver, programs) jobFinished(params, true) return true } override fun onStopJob(params: JobParameters?): Boolean { jobFinished(params, false) return false } }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { override fun onStartJob(params: JobParameters?): Boolean { val channelId = loadDefaultChannelId() val programs = createPrograms(channelId, YOUR_CONTENTS) bulkInsertPrograms(contentResolver, programs) jobFinished(params, true) return true } override fun onStopJob(params: JobParameters?): Boolean { jobFinished(params, false) return false } }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { override fun onStartJob(params: JobParameters?): Boolean { val channelId = loadDefaultChannelId() val programs = createPrograms(channelId, YOUR_CONTENTS) bulkInsertPrograms(contentResolver, programs) jobFinished(params, true) return true } override fun onStopJob(params: JobParameters?): Boolean { jobFinished(params, false) return false } }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { override fun onStartJob(params: JobParameters?): Boolean { val channelId = loadDefaultChannelId() val programs = createPrograms(channelId, YOUR_CONTENTS) bulkInsertPrograms(contentResolver, programs) jobFinished(params, true) return true } override fun onStopJob(params: JobParameters?): Boolean { jobFinished(params, false) return false } }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { override fun onStartJob(params: JobParameters?): Boolean { val channelId = loadDefaultChannelId() val programs = createPrograms(channelId, YOUR_CONTENTS) bulkInsertPrograms(contentResolver, programs) jobFinished(params, true) return true } override fun onStopJob(params: JobParameters?): Boolean { jobFinished(params, false) return false } }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { override fun onStartJob(params: JobParameters?): Boolean { val channelId = loadDefaultChannelId() val programs = createPrograms(channelId, YOUR_CONTENTS) bulkInsertPrograms(contentResolver, programs) jobFinished(params, true) return true } override fun onStopJob(params: JobParameters?): Boolean { jobFinished(params, false) return false } }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { companion object { @JvmStatic fun startJob(c: Context) { //load default channel … scheduleProgramJob(c) } } override fun onStartJob(params: JobParameters?): Boolean ... override fun onStopJob(params: JobParameters?): Boolean ... }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { companion object { @JvmStatic fun startJob(c: Context) { //load default channel … scheduleProgramJob(c) } } override fun onStartJob(params: JobParameters?): Boolean ... override fun onStopJob(params: JobParameters?): Boolean ... }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { @JvmStatic fun startJob(c: Context) … override fun onStartJob(params: JobParameters?): Boolean … override fun onStopJob(params: JobParameters?): Boolean … fun scheduleProgramJob(c: Context) { val service = ComponentName(c, DefaultChannelRecommendationJobService::class.java) val scheduler = c.getSystemService(Context.JOB_SCHEDULER_SERVICE) val channelId = loadDefaultChannelId() val jobId = JobIdManager.createId(JobIdManager.TYPE_CHANNEL_PROGRAMS, channelId) val builder = JobInfo.Builder(jobId, service) scheduler.schedule(builder.setPeriodic(TimeUnit.MINUTES.toMillis(15)).build()) } }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { @JvmStatic fun startJob(c: Context) ... override fun onStartJob(params: JobParameters?): Boolean ... override fun onStopJob(params: JobParameters?): Boolean … fun scheduleProgramJob(c: Context) { val service = ComponentName(c, DefaultChannelRecommendationJobService::class.java) val scheduler = c.getSystemService(Context.JOB_SCHEDULER_SERVICE) val channelId = loadDefaultChannelId() val jobId = JobIdManager.createId(JobIdManager.TYPE_CHANNEL_PROGRAMS, channelId) val builder = JobInfo.Builder(jobId, service) scheduler.schedule(builder.setPeriodic(TimeUnit.MINUTES.toMillis(15)).build()) } }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { @JvmStatic fun startJob(c: Context) ... override fun onStartJob(params: JobParameters?): Boolean ... override fun onStopJob(params: JobParameters?): Boolean … fun scheduleProgramJob(c: Context) { val service = ComponentName(c, DefaultChannelRecommendationJobService::class.java) val scheduler = c.getSystemService(Context.JOB_SCHEDULER_SERVICE) val channelId = loadDefaultChannelId() val jobId = JobIdManager.createId(JobIdManager.TYPE_CHANNEL_PROGRAMS, channelId) val builder = JobInfo.Builder(jobId, service) scheduler.schedule(builder.setPeriodic(TimeUnit.MINUTES.toMillis(15)).build()) } }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { @JvmStatic fun startJob(c: Context) ... override fun onStartJob(params: JobParameters?): Boolean ... override fun onStopJob(params: JobParameters?): Boolean … fun scheduleProgramJob(c: Context) { val service = ComponentName(c, DefaultChannelRecommendationJobService::class.java) val scheduler = c.getSystemService(Context.JOB_SCHEDULER_SERVICE) val channelId = loadDefaultChannelId() val jobId = JobIdManager.createId(JobIdManager.TYPE_CHANNEL_PROGRAMS, channelId) val builder = JobInfo.Builder(jobId, service) scheduler.schedule(builder.setPeriodic(TimeUnit.MINUTES.toMillis(15)).build()) } } You have to create unique jobId for each job.

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https://developers-jp.googleblog.com/2017/10/working-with-multiple-jobservices.html

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { @JvmStatic fun startJob(c: Context) ... override fun onStartJob(params: JobParameters?): Boolean ... override fun onStopJob(params: JobParameters?): Boolean … fun scheduleProgramJob(c: Context) { val service = ComponentName(c, DefaultChannelRecommendationJobService::class.java) val scheduler = c.getSystemService(Context.JOB_SCHEDULER_SERVICE) val channelId = loadDefaultChannelId() val jobId = JobIdManager.createId(JobIdManager.TYPE_CHANNEL_PROGRAMS, channelId) val builder = JobInfo.Builder(jobId, service) scheduler.schedule(builder.setPeriodic(TimeUnit.MINUTES.toMillis(15)).build()) } }

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Create Jobservice Class DefaultChannelRecommendationJobService : JobService() { @JvmStatic fun startJob(c: Context) ... override fun onStartJob(params: JobParameters?): Boolean ... override fun onStopJob(params: JobParameters?): Boolean … fun scheduleProgramJob(c: Context) { val service = ComponentName(c, DefaultChannelRecommendationJobService::class.java) val scheduler = c.getSystemService(Context.JOB_SCHEDULER_SERVICE) val channelId = loadDefaultChannelId() val jobId = JobIdManager.createId(JobIdManager.TYPE_CHANNEL_PROGRAMS, channelId) val builder = JobInfo.Builder(jobId, service) scheduler.schedule(builder.setPeriodic(TimeUnit.MINUTES.toMillis(15)).build()) } } The periodic job is not work when the period is less than 15 minute!!

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Add JobService to AndroidManifest.xml

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Is that all?

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No.

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No content

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No content

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No content

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Don’t reinsert deleted programs!

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Don’t reinsert deleted programs!! User can delete program anytime

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Don’t reinsert deleted programs!! OK, I delete it.

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Don’t reinsert deleted programs!! After 15min...

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Save deleted content data in your app ● Handling program delete event ● Then save content data(id, name and so on) ● Filter content in your job

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ACTION_PREVIEW_PROGRAM_BROWSABLE_DISABLED (ACTION_WATCH_NEXT_PROGRAM_BROWSABLE_DISABLED)

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Create BroadcastReceiver class ProgramRemovedReceiver : BroadcastReceiver() { override fun onReceive(c: Context, i: Intent) { if (i.action == TvContractCompat.ACTION_PREVIEW_PROGRAM_BROWSABLE_DISABLED) { // save content ids val contents = loadPrograms(c) contents.filter { !it.isBrowsable } .map { it.id } .toList() .let { deletedProgramIds -> saveIds(deletedProgramIds) } } }

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Create BroadcastReceiver class ProgramRemovedReceiver : BroadcastReceiver() { override fun onReceive(c: Context, i: Intent) { if (i.action == TvContractCompat.ACTION_PREVIEW_PROGRAM_BROWSABLE_DISABLED) { // save content ids val contents = loadPrograms(c) contents.filter { !it.isBrowsable } .map { it.id } .toList() .let { deletedProgramIds -> saveIds(deletedProgramIds) } } }

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Create BroadcastReceiver class ProgramRemovedReceiver : BroadcastReceiver() { override fun onReceive(c: Context, i: Intent) { if (i.action == TvContractCompat.ACTION_PREVIEW_PROGRAM_BROWSABLE_DISABLED) { // save content ids val contents = loadPrograms(c) contents.filter { !it.isBrowsable } .map { it.id } .toList() .let { deletedProgramIds -> saveIds(deletedProgramIds) } } }

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Create BroadcastReceiver class ProgramRemovedReceiver : BroadcastReceiver() { override fun onReceive(c: Context, i: Intent) { if (i.action == TvContractCompat.ACTION_PREVIEW_PROGRAM_BROWSABLE_DISABLED) { // save content ids val contents = loadPrograms(c) contents.filter { !it.isBrowsable } .map { it.id } .toList() .let { deletedProgramIds -> saveIds(deletedProgramIds) } } }

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Create BroadcastReceiver class ProgramRemovedReceiver : BroadcastReceiver() { override fun onReceive(c: Context, i: Intent) { if (i.action == TvContractCompat.ACTION_PREVIEW_PROGRAM_BROWSABLE_DISABLED) { // save content ids val contents = loadPrograms(c) contents.filter { !it.isBrowsable } .map { it.id } .toList() .let { deletedProgramIds -> saveIds(deletedProgramIds) } } }

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Insert your programs to channel @TargetApi(Build.VERSION_CODES.O) private fun insertPrograms(programs: List): Int { programs.map { it.toContentValues() } .toList() .let { return cr.bulkInsert( TvContractCompat.PreviewPrograms.CONTENT_URI, it.toTypedArray()) } }

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Insert your programs to channel @TargetApi(Build.VERSION_CODES.O) private fun insertPrograms(programs: List): Int { val removedIds = loadRemovedIds(this) programs.map { it.toContentValues() } .toList() .let { return cr.bulkInsert( TvContractCompat.PreviewPrograms.CONTENT_URI, it.toTypedArray()) } }

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Insert your programs to channel @TargetApi(Build.VERSION_CODES.O) private fun insertPrograms(programs: List): Int { val removedIds = loadRemovedIds(this) programs.filter { !removedIds.contains(it.id) } .map { it.toContentValues() } .toList() .let { return cr.bulkInsert( TvContractCompat.PreviewPrograms.CONTENT_URI, it.toTypedArray()) } } 100!

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One more tip “Media first UX”

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Enable to open your app from everywhere ● Global search

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Enable to open your app from everywhere ● Recommendation

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Enable to open your app from everywhere ● Google Assistant

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Consider window order Your Application Global Search Google Assistant Recommendation

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Consider window order Your Application Global Search Google Assistant Recommendation Top Top Top

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Consider window order Your Application Global Search Google Assistant Recommendation Top Top Top

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Consider window order Your Application Global search Google Assistant Recommendation Top Top Top Not media first!

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Consider window order Your Application Global Search Google Assistant Recommendation

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Consider window order Your Application Global Search Google Assistant Recommendation Video Video Video

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Consider window order Your Application Global Search Google Assistant Recommendation Video

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Consider window order Your Application Global Search Google Assistant Recommendation Video Top

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Consider window order Your Application Global Search Google Assistant Recommendation Top

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Consider window order Your Application Global Search Google Assistant Recommendation Video Video

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Consider window order Your Application Global Search Google Assistant Recommendation Video Top Video Top

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Consider window order Your Application Global Search Google Assistant Recommendation VideoPlayer Top VideoPlayer Top

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Consider window order Your Application Global search Google Assistant Recommendation VideoPlayer Top VideoPlayer Top User want to see searched contents!

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Consider window order Your Application Global Search Google Assistant Recommendation Video Video

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Samples My sample https://github.com/kaelaela/TvRecommendation Code lab https://goo.gl/t3Auwo

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That’s it! ● Overview of AndroidTV ● AndroidTV Oreo features ● What is new in Oreo? ● What is Recommendation Channels? ● How to implement new recommendations & tips

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Thank you! Special thanks Yoshihito Ikeda AbemaTV Android team Shohei Kawano Shogo Sensui