Hello Android Car App!

sudo apt-get install git-core gnupg flex bison build-essential zip curl zlib1g-dev libc6-dev-i386 libncurses5 lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z1-dev libgl1-mesa-dev libxml2-utils xsltproc unzip fontconfig

## Repo ランチャーをインストール
repo init -u [https://android.googlesource.​com/platform/manifest](https://android.googlesource.com/platform/manifest) -b android-13.0.0\_r35 --depth=1  

## local_manifestの追加
git clone [https://github.com/grapeup/​aaos\_local\_manifest.git](https://github.com/grapeup/aaos_local_manifest.git) .repo/local\_manifests

## local_manifestに不足しているdav1dライブラリを追加

<!-- FFmpeg -->
  <project path="external/dav1d" name="raspberry-vanilla/android_external_dav1d" remote="github" revision="android-13.0" />

. build/envsetup.sh
lunch aosp_rpi4-userdebug
make bootimage systemimage vendorimage -j$(nproc)

sudo umount /dev/sdb*
sudo wipefs -a /dev/sdb*
sudo wipefs -a /dev/sdb

chmod +x ./desktop-head-unit

adb forward tcp:5277 tcp:5277

./desktop-head-unit --usb

buildscript {
    ext {
        car_app_library_version = '1.4.0'
    }
}

dependencies {
  ...
  implementation "androidx.car.app:app:$car_app_library_version"
  ...
}

        <service
            android:name="com.example.places.carappservice.PlacesCarAppService"
            android:exported="true">
            <intent-filter>
                <action android:name="androidx.car.app.CarAppService" />
                <category android:name="androidx.car.app.category.POI" />
            </intent-filter>
        </service>

class PlacesCarAppService : CarAppService() {

    override fun createHostValidator(): HostValidator {
        return HostValidator.ALLOW_ALL_HOSTS_VALIDATOR
    }

    override fun onCreateSession(): Session {
        return PlacesSession()
    }
}

class PlacesSession : Session() {
    override fun onCreateScreen(intent: Intent): Screen {
        return MainScreen(carContext)
    }
}

<uses-permission android:name="androidx.car.app.MAP_TEMPLATES" />

class MainScreen(
    carContext: CarContext,
) : Screen(carContext) {
    override fun onGetTemplate(): Template {
        val placesRepository = PlacesRepository()
        val itemListBuilder =
            ItemList.Builder()
                .setNoItemsMessage("No data")

        placesRepository.getPlaces()
            .forEach {
                itemListBuilder.addItem(
                    Row.Builder()
                        .setTitle(it.name)
                        // リスト内の各項目は、タイトルまたはテキスト行にDistanceSpanを追加する必要があります。
                        .addText(
                            SpannableString(" ").apply {
                                setSpan(
                                    DistanceSpan.create(
                                        Distance.create(Math.random() * 100, Distance.UNIT_KILOMETERS),
                                    ),
                                    0,
                                    1,
                                    Spannable.SPAN_INCLUSIVE_INCLUSIVE,
                                )
                            },
                        )
                        .setOnClickListener {
                            screenManager.push(DetailScreen(carContext = carContext, placeId = it.id))
                        }
                        .setMetadata(
                            Metadata.Builder()
                                .setPlace(
                                    Place.Builder(CarLocation.create(it.latitude, it.longitude))
                                        .setMarker(PlaceMarker.Builder().build())
                                        .build(),
                                )
                                .build(),
                        ).build(),
                )
            }

        return PlaceListMapTemplate.Builder()
            .setTitle("Places")
            .setItemList(itemListBuilder.build())
            .build()
    }
}

class DetailScreen(carContext: CarContext, private val placeId: Int) : Screen(carContext) {
    private var isFavorite = false

    override fun onGetTemplate(): Template {
        val place = PlacesRepository().getPlace(placeId)
            ?: return MessageTemplate.Builder("Place not found")
                .setHeaderAction(Action.BACK)
                .build()

        val navigateAction = Action.Builder()
            .setTitle("Navigate")
            .setIcon(
                CarIcon.Builder(
                    IconCompat.createWithResource(
                        carContext,
                        R.drawable.baseline_navigation_24
                    )
                ).build()
            )
            .setOnClickListener {  carContext.startCarApp(place.toIntent(CarContext.ACTION_NAVIGATE)) }
            .build()

        val actionStrip = ActionStrip.Builder()
            .addAction(
                Action.Builder()
                    .setIcon(
                        CarIcon.Builder(
                            IconCompat.createWithResource(
                                carContext,
                                R.drawable.baseline_favorite_24
                            )
                        ).setTint(
                            if (isFavorite) CarColor.RED else CarColor.createCustom(
                                Color.LTGRAY,
                                Color.DKGRAY
                            )
                        ).build()
                    )
                    .setOnClickListener {
                        isFavorite = !isFavorite
                        // 画面の状態の更新を拾えるように、`onGetTemplate`を再度呼び出すようにinvalidate()をコールする
                        invalidate()
                    }.build()
            )
            .build()

        return PaneTemplate.Builder(
            Pane.Builder()
                .addAction(navigateAction)
                .addRow(
                    Row.Builder()
                        .setTitle("Coordinates")
                        .addText("${place.latitude}, ${place.longitude}")
                        .build()
                ).addRow(
                    Row.Builder()
                        .setTitle("Description")
                        .addText(place.description)
                        .build()
                ).build()
        )
            .setTitle(place.name)
            .setHeaderAction(Action.BACK)
            .setActionStrip(actionStrip)
            .build()
    }
}

Caused by: androidx.car.app.HostException: Remote startCarApp call failed