Android Auto 向けのテンプレート化されたメッセージ エクスペリエンスを構築する

<application>
    ...
   <service
       ...
        android:name=".MyCarAppService"
        android:exported="true">
      <intent-filter>
        <action android:name="androidx.car.app.CarAppService" />
        <category android:name="androidx.car.app.category.MESSAGING"/>
      </intent-filter>
    </service>
    ...
<application>

<application ...>
    ...
    <meta-data
        android:name="androidx.car.app.minCarApiLevel"
        android:value="7"/>
    ...
</application>

<automotiveApp>
    <uses name="notification" />
    <uses name="template" />
</automotiveApp>

<automotiveApp>
    ...
    <uses name="sms" />
</automotiveApp>

class MyMessagingScreen() : Screen() {

    override fun onGetTemplate(): Template {
        val itemListBuilder = ItemList.Builder()
        val conversations: List<MyConversation> = // Retrieve conversations

        for (conversation: MyConversation in conversations) {
            val carMessages: List<CarMessage> = conversation.getMessages()
                .map { message ->
                    // CarMessage supports additional fields such as MIME type and URI,
                    // which you should set if available
                    CarMessage.Builder()
                        .setSender(message.sender)
                        .setBody(message.body)
                        .setReceivedTimeEpochMillis(message.receivedTimeEpochMillis)
                        .setRead(message.isRead)
                        .build()
                }

            itemListBuilder.addItem(
                ConversationItem.Builder()
                    .setConversationCallback { /* Implement your conversation callback logic here */ }
                    .setId(/* Set conversation ID */)
                    .setTitle(/* Set conversation title */)
                    .setIcon(/* Set conversation icon if available */)
                    .setMessages(carMessages)
                    /* When the sender of a CarMessage is equal to this Person,
                    message readout is adjusted to "you said" instead of "<person>
                    said" */
                    .setSelf(/* Set self-sender */)
                    .setGroupConversation(/* Set if the message contains more than 2 participants */)
                    .build()
            )
        }

        return ListTemplate.Builder()
            .setTitle("Conversations")
            .setHeaderAction(Action.APP_ICON)
            .setSingleList(itemListBuilder.build())
            .build()
    }
}