DataStore Manager

2026-02-20 07:20:04 +01:00
parent 65ff41995d
commit ebd97cf1c9
65 changed files with 7975 additions and 13716 deletions
--- a/common/car/build.gradle.kts
+++ b/common/car/build.gradle.kts
@@ -56,6 +56,7 @@ dependencies {
    implementation(libs.androidx.material3)
    implementation(libs.androidx.compose.ui.text)
    implementation(libs.play.services.location)
+    implementation(libs.androidx.datastore.core)
    androidTestImplementation(libs.androidx.junit)
    testImplementation(libs.junit)
 }
--- a/common/car/src/main/java/com/kouros/navigation/car/NavigationSession.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/NavigationSession.kt
@@ -2,6 +2,7 @@ package com.kouros.navigation.car

 import android.Manifest
 import android.annotation.SuppressLint
+import android.app.Application
 import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageManager
@@ -26,6 +27,9 @@ import androidx.lifecycle.DefaultLifecycleObserver
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LifecycleObserver
 import androidx.lifecycle.LifecycleOwner
+import androidx.lifecycle.ViewModelStore
+import androidx.lifecycle.ViewModelStoreOwner
+import androidx.lifecycle.lifecycleScope
 import com.kouros.navigation.car.navigation.RouteCarModel
 import com.kouros.navigation.car.screen.NavigationScreen
 import com.kouros.navigation.car.screen.RequestPermissionScreen
@@ -35,13 +39,20 @@ import com.kouros.navigation.data.Constants.MAXIMAL_ROUTE_DEVIATION
 import com.kouros.navigation.data.Constants.MAXIMAL_SNAP_CORRECTION
 import com.kouros.navigation.data.Constants.TAG
 import com.kouros.navigation.data.RouteEngine
+import com.kouros.navigation.data.datastore.DataStoreManager
 import com.kouros.navigation.data.osrm.OsrmRepository
 import com.kouros.navigation.data.tomtom.TomTomRepository
 import com.kouros.navigation.data.valhalla.ValhallaRepository
-import com.kouros.navigation.model.ViewModel
+import com.kouros.navigation.model.NavigationViewModel
 import com.kouros.navigation.utils.GeoUtils.snapLocation
-import com.kouros.navigation.utils.NavigationUtils.getBooleanKeyValue
 import com.kouros.navigation.utils.NavigationUtils.getViewModel
+import com.kouros.navigation.utils.getSettingsRepository
+import com.kouros.navigation.utils.getSettingsViewModel
+import kotlinx.coroutines.awaitCancellation
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
+

 class NavigationSession : Session(), NavigationScreen.Listener {

@@ -54,7 +65,8 @@ class NavigationSession : Session(), NavigationScreen.Listener {
    lateinit var surfaceRenderer: SurfaceRenderer

    var mLocationListener: LocationListenerCompat = LocationListenerCompat { location: Location? ->
-        val useCarLocation = getBooleanKeyValue(carContext, CAR_LOCATION)
+        val repository = getSettingsRepository(carContext)
+        val useCarLocation = runBlocking {  repository.carLocationFlow.first() }
        if (!useCarLocation) {
            updateLocation(location!!)
        }
@@ -75,7 +87,8 @@ class NavigationSession : Session(), NavigationScreen.Listener {

        override fun onDestroy(owner: LifecycleOwner) {
            val carInfo = carContext.getCarService(CarHardwareManager::class.java).carInfo
-            val useCarLocation = getBooleanKeyValue(carContext, CAR_LOCATION)
+            val repository = getSettingsRepository(carContext)
+            val useCarLocation = runBlocking {  repository.carLocationFlow.first() }
            if (useCarLocation) {
                val carSensors = carContext.getCarService(CarHardwareManager::class.java).carSensors
                carSensors.removeCarHardwareLocationListener(carLocationListener)
@@ -88,8 +101,9 @@ class NavigationSession : Session(), NavigationScreen.Listener {
        }
    }

-    lateinit var navigationViewModel: ViewModel
+    lateinit var navigationViewModel: NavigationViewModel

+    lateinit var viewModelStoreOwner : ViewModelStoreOwner
    val carLocationListener: OnCarDataAvailableListener<CarHardwareLocation?> =
        OnCarDataAvailableListener { data ->
            if (data.location.status == CarValue.STATUS_SUCCESS) {
@@ -123,22 +137,39 @@ class NavigationSession : Session(), NavigationScreen.Listener {

    fun onRoutingEngineStateUpdated(routeEngine : Int) {
        navigationViewModel =  when (routeEngine) {
-            RouteEngine.VALHALLA.ordinal -> ViewModel(ValhallaRepository())
-            RouteEngine.OSRM.ordinal -> ViewModel(OsrmRepository())
-            else -> ViewModel(TomTomRepository())
+            RouteEngine.VALHALLA.ordinal -> NavigationViewModel(ValhallaRepository())
+            RouteEngine.OSRM.ordinal -> NavigationViewModel(OsrmRepository())
+            else -> NavigationViewModel(TomTomRepository())
        }
    }


    override fun onCreateScreen(intent: Intent): Screen {

+        viewModelStoreOwner = object : ViewModelStoreOwner {
+            override val viewModelStore = ViewModelStore()
+        }
+        lifecycleScope.launch {
+            try {
+                awaitCancellation()
+            } finally {
+                viewModelStoreOwner.viewModelStore.clear()
+            }
+        }
+
+      //  lifecycleScope.launch {
+
+
+        //}
+
+
        navigationViewModel = getViewModel(carContext)

        navigationViewModel.routingEngine.observe(this, ::onRoutingEngineStateUpdated)

        routeModel = RouteCarModel()

-        surfaceRenderer = SurfaceRenderer(carContext, lifecycle, routeModel)
+        surfaceRenderer = SurfaceRenderer(carContext, lifecycle, routeModel, viewModelStoreOwner)

        navigationScreen =
            NavigationScreen(carContext, surfaceRenderer, routeModel, this, navigationViewModel)
@@ -175,7 +206,8 @@ class NavigationSession : Session(), NavigationScreen.Listener {

    fun addSensors() {
        val carInfo = carContext.getCarService(CarHardwareManager::class.java).carInfo
-        val useCarLocation = getBooleanKeyValue(carContext, CAR_LOCATION)
+        val repository = getSettingsRepository(carContext)
+        val useCarLocation = runBlocking {  repository.carLocationFlow.first() }
        if (useCarLocation) {
            val carSensors = carContext.getCarService(CarHardwareManager::class.java).carSensors
            carSensors.addCompassListener(CarSensors.UPDATE_RATE_NORMAL,
@@ -269,8 +301,8 @@ class NavigationSession : Session(), NavigationScreen.Listener {
        }
    }

-    override fun stopNavigation() {
-        routeModel.stopNavigation()
+    override fun stopNavigation(context: CarContext) {
+        routeModel.stopNavigation(context)
    }


--- a/common/car/src/main/java/com/kouros/navigation/car/SurfaceRenderer.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/SurfaceRenderer.kt
@@ -14,6 +14,7 @@ import androidx.car.app.connection.CarConnection
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.ui.platform.ComposeView
@@ -21,6 +22,7 @@ import androidx.lifecycle.DefaultLifecycleObserver
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LifecycleOwner
 import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModelStoreOwner
 import androidx.lifecycle.setViewTreeLifecycleOwner
 import androidx.savedstate.setViewTreeSavedStateRegistryOwner
 import com.kouros.navigation.car.map.DrawNavigationImages
@@ -29,21 +31,23 @@ import com.kouros.navigation.car.map.cameraState
 import com.kouros.navigation.car.map.getPaddingValues
 import com.kouros.navigation.car.map.rememberBaseStyle
 import com.kouros.navigation.car.navigation.RouteCarModel
-import com.kouros.navigation.data.Constants
 import com.kouros.navigation.data.Constants.ROUTING_ENGINE
 import com.kouros.navigation.data.Constants.homeVogelhart
 import com.kouros.navigation.data.ObjectBox
 import com.kouros.navigation.data.RouteEngine
-import com.kouros.navigation.data.tomtom.TrafficData
 import com.kouros.navigation.model.BaseStyleModel
 import com.kouros.navigation.model.RouteModel
-import com.kouros.navigation.utils.NavigationUtils.getIntKeyValue
 import com.kouros.navigation.utils.bearing
 import com.kouros.navigation.utils.calculateTilt
 import com.kouros.navigation.utils.calculateZoom
 import com.kouros.navigation.utils.duration
+import com.kouros.navigation.utils.getSettingsRepository
+import com.kouros.navigation.utils.getSettingsViewModel
 import com.kouros.navigation.utils.location
 import com.kouros.navigation.utils.previewZoom
+import com.kouros.navigation.utils.settingsViewModel
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.runBlocking
 import org.maplibre.compose.camera.CameraPosition
 import org.maplibre.compose.camera.CameraState
 import org.maplibre.compose.style.BaseStyle
@@ -52,7 +56,8 @@ import org.maplibre.spatialk.geojson.Position

 class SurfaceRenderer(
    private var carContext: CarContext, lifecycle: Lifecycle,
-    private var routeModel: RouteCarModel
+    private var routeModel: RouteCarModel,
+    private var viewModelStoreOwner: ViewModelStoreOwner
 ) : DefaultLifecycleObserver {

    var lastLocation = location(0.0, 0.0)
@@ -187,9 +192,12 @@ class SurfaceRenderer(
    @Composable
    fun MapView() {

-        val darkMode = getIntKeyValue(carContext, Constants.DARK_MODE_SETTINGS)
-        val baseStyle = BaseStyleModel().readStyle(carContext, darkMode,  carContext.isDarkMode)

+        //val appViewModel: AppViewModel = appViewModel(viewModelStoreOwner)
+        //val darkMode by appViewModel.darkMode.collectAsState()
+        val darkMode = settingsViewModel(carContext, viewModelStoreOwner).darkMode.collectAsState().value
+
+        val baseStyle = BaseStyleModel().readStyle(carContext, darkMode,  carContext.isDarkMode)
        val position: CameraPosition? by cameraPosition.observeAsState()
        val route: String? by routeData.observeAsState()
        val traffic: Map<String, String> ? by trafficData.observeAsState()
@@ -197,7 +205,17 @@ class SurfaceRenderer(
        val paddingValues = getPaddingValues(height, viewStyle)
        val cameraState = cameraState(paddingValues, position, tilt)
        val rememberBaseStyle = rememberBaseStyle(baseStyle)
-        MapLibre(carContext, cameraState, rememberBaseStyle, route, traffic, viewStyle, speedCameras)
+
+        MapLibre(
+            carContext,
+            cameraState,
+            rememberBaseStyle,
+            route,
+            traffic,
+            viewStyle,
+            speedCameras,
+            false
+        )
        ShowPosition(cameraState, position, paddingValues)
    }

@@ -339,7 +357,8 @@ class SurfaceRenderer(
    }

    fun updateCarLocation(location: Location) {
-        val routingEngine = getIntKeyValue(carContext, ROUTING_ENGINE)
+        val repository = getSettingsRepository(carContext)
+        val routingEngine = runBlocking {  repository.routingEngineFlow.first() }
        if (routingEngine == RouteEngine.OSRM.ordinal) {
            updateLocation(location)
        }
--- a/common/car/src/main/java/com/kouros/navigation/car/map/MapView.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/map/MapView.kt
@@ -26,15 +26,18 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.rememberTextMeasurer
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
 import com.kouros.data.R
 import com.kouros.navigation.car.ViewStyle
 import com.kouros.navigation.data.Constants
-import com.kouros.navigation.data.Constants.SHOW_THREED_BUILDING
 import com.kouros.navigation.data.NavigationColor
 import com.kouros.navigation.data.RouteColor
 import com.kouros.navigation.data.SpeedColor
+import com.kouros.navigation.data.datastore.DataStoreManager
 import com.kouros.navigation.model.RouteModel
-import com.kouros.navigation.utils.NavigationUtils.getBooleanKeyValue
+import com.kouros.navigation.model.SettingsViewModel
+import com.kouros.navigation.repository.SettingsRepository
 import org.maplibre.compose.camera.CameraPosition
 import org.maplibre.compose.camera.CameraState
 import org.maplibre.compose.camera.rememberCameraState
@@ -92,7 +95,8 @@ fun MapLibre(
    route: String?,
    traffic: Map<String, String>?,
    viewStyle: ViewStyle,
-    speedCameras: String? = ""
+    speedCameras: String? = "",
+    showBuildings: Boolean
 ) {
    MaplibreMap(
        options = MapOptions(
@@ -103,7 +107,7 @@ fun MapLibre(
        baseStyle = baseStyle
    ) {
        getBaseSource(id = "openmaptiles")?.let { tiles ->
-            if (!getBooleanKeyValue(context = context, SHOW_THREED_BUILDING)) {
+            if (!showBuildings) {
                BuildingLayer(tiles)
            }
            if (viewStyle == ViewStyle.AMENITY_VIEW) {
@@ -553,3 +557,4 @@ fun PuckState(cameraState: CameraState, userLocationState: UserLocationState) {
    )
 }

+
--- a/common/car/src/main/java/com/kouros/navigation/car/screen/CategoriesScreen.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/screen/CategoriesScreen.kt
@@ -1,6 +1,5 @@
 package com.kouros.navigation.car.screen

-import android.location.Location
 import androidx.car.app.CarContext
 import androidx.car.app.Screen
 import androidx.car.app.model.Action
@@ -14,17 +13,16 @@ import androidx.core.graphics.drawable.IconCompat
 import com.kouros.data.R
 import com.kouros.navigation.car.SurfaceRenderer
 import com.kouros.navigation.car.ViewStyle
-import com.kouros.navigation.car.navigation.RouteCarModel
 import com.kouros.navigation.data.Category
 import com.kouros.navigation.data.Constants.CHARGING_STATION
 import com.kouros.navigation.data.Constants.FUEL_STATION
 import com.kouros.navigation.data.Constants.PHARMACY
-import com.kouros.navigation.model.ViewModel
+import com.kouros.navigation.model.NavigationViewModel

 class CategoriesScreen(
    private val carContext: CarContext,
    private val surfaceRenderer: SurfaceRenderer,
-    private val viewModel: ViewModel,
+    private val navigationViewModel: NavigationViewModel,
 ) : Screen(carContext) {

    var categories: List<Category> = listOf(
@@ -48,7 +46,7 @@ class CategoriesScreen(
                                    carContext,
                                    surfaceRenderer,
                                    it.id,
-                                    viewModel
+                                    navigationViewModel
                                )
                            ) { obj: Any? ->
                                if (obj != null) {
--- a/common/car/src/main/java/com/kouros/navigation/car/screen/CategoryScreen.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/screen/CategoryScreen.kt
@@ -1,6 +1,5 @@
 package com.kouros.navigation.car.screen

-import android.location.Location
 import androidx.annotation.DrawableRes
 import androidx.car.app.CarContext
 import androidx.car.app.Screen
@@ -19,11 +18,10 @@ import androidx.lifecycle.Observer
 import com.kouros.data.R
 import com.kouros.navigation.car.SurfaceRenderer
 import com.kouros.navigation.car.navigation.NavigationMessage
-import com.kouros.navigation.car.navigation.RouteCarModel
 import com.kouros.navigation.data.Constants
 import com.kouros.navigation.data.Place
 import com.kouros.navigation.data.overpass.Elements
-import com.kouros.navigation.model.ViewModel
+import com.kouros.navigation.model.NavigationViewModel
 import com.kouros.navigation.utils.GeoUtils.createPointCollection
 import com.kouros.navigation.utils.location
 import com.kouros.navigation.utils.round
@@ -33,7 +31,7 @@ class CategoryScreen(
    private val carContext: CarContext,
    private val surfaceRenderer: SurfaceRenderer,
    private val category: String,
-    private val viewModel: ViewModel,
+    private val navigationViewModel: NavigationViewModel,
 ) : Screen(carContext) {

    var elements = listOf<Elements>()
@@ -57,8 +55,8 @@ class CategoryScreen(
    }

    init {
-        viewModel.elements.observe(this, observer)
-        viewModel.getAmenities(category, surfaceRenderer.lastLocation)
+        navigationViewModel.elements.observe(this, observer)
+        navigationViewModel.getAmenities(category, surfaceRenderer.lastLocation)
    }


@@ -130,7 +128,7 @@ class CategoryScreen(
        row.addAction(
            Action.Builder()
            .setOnClickListener {
-                viewModel.loadRoute(
+                navigationViewModel.loadRoute(
                    carContext,
                    currentLocation = surfaceRenderer.lastLocation,
                    location(it.lon!!, it.lat!!),
--- a/common/car/src/main/java/com/kouros/navigation/car/screen/DarkModeSettings.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/screen/DarkModeSettings.kt
@@ -10,23 +10,27 @@ import androidx.car.app.model.ListTemplate
 import androidx.car.app.model.Row
 import androidx.car.app.model.SectionedItemList
 import androidx.car.app.model.Template
+import androidx.lifecycle.lifecycleScope
 import com.kouros.data.R
-import com.kouros.navigation.data.Constants.DARK_MODE_SETTINGS
-import com.kouros.navigation.data.Constants.SHOW_THREED_BUILDING
-import com.kouros.navigation.utils.NavigationUtils.getBooleanKeyValue
-import com.kouros.navigation.utils.NavigationUtils.getIntKeyValue
-import com.kouros.navigation.utils.NavigationUtils.setBooleanKeyValue
-import com.kouros.navigation.utils.NavigationUtils.setIntKeyValue
+import com.kouros.navigation.utils.getSettingsViewModel
+import kotlinx.coroutines.launch

 class DarkModeSettings(private val carContext: CarContext) : Screen(carContext) {

    private var darkModeSettings = 0

+    val settingsViewModel = getSettingsViewModel(carContext)
+
    init {
-        darkModeSettings = getIntKeyValue(carContext, DARK_MODE_SETTINGS)
+        lifecycleScope.launch {
+            settingsViewModel.darkMode.collect {
+                invalidate()
+            }
+        }
    }

    override fun onGetTemplate(): Template {
+        darkModeSettings = settingsViewModel.darkMode.value
        val templateBuilder = ListTemplate.Builder()
        val radioList =
            ItemList.Builder()
@@ -52,10 +56,12 @@ class DarkModeSettings(private val carContext: CarContext) : Screen(carContext)
                .build()

        return templateBuilder
-            .addSectionedList(SectionedItemList.create(
-                radioList,
-                carContext.getString(R.string.dark_mode)
-            ))
+            .addSectionedList(
+                SectionedItemList.create(
+                    radioList,
+                    carContext.getString(R.string.dark_mode)
+                )
+            )
            .setHeader(
                Header.Builder()
                    .setTitle(carContext.getString(R.string.dark_mode))
@@ -67,7 +73,7 @@ class DarkModeSettings(private val carContext: CarContext) : Screen(carContext)


    private fun onSelected(index: Int) {
-        setIntKeyValue(carContext, index, DARK_MODE_SETTINGS)
+        settingsViewModel.onDarkModeChanged(index)
        CarToast.makeText(
            carContext,
            (carContext
--- a/common/car/src/main/java/com/kouros/navigation/car/screen/DisplaySettings.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/screen/DisplaySettings.kt
@@ -6,33 +6,34 @@ import androidx.car.app.model.Action
 import androidx.car.app.model.Header
 import androidx.car.app.model.ItemList
 import androidx.car.app.model.ListTemplate
-import androidx.car.app.model.OnClickListener
 import androidx.car.app.model.Row
 import androidx.car.app.model.Template
 import androidx.car.app.model.Toggle
+import androidx.lifecycle.lifecycleScope
 import com.kouros.data.R
-import com.kouros.navigation.data.Constants.SHOW_THREED_BUILDING
-import com.kouros.navigation.utils.NavigationUtils.getBooleanKeyValue
-import com.kouros.navigation.utils.NavigationUtils.setBooleanKeyValue
+import com.kouros.navigation.utils.getSettingsViewModel
+import kotlinx.coroutines.launch

 class DisplaySettings(private val carContext: CarContext) : Screen(carContext) {

    private var buildingToggleState = false

+    val settingsViewModel = getSettingsViewModel(carContext)

    init {
-        buildingToggleState = getBooleanKeyValue(carContext, SHOW_THREED_BUILDING)
+        lifecycleScope.launch {
+            settingsViewModel.threedBuilding.collect {
+                invalidate()
+            }
+        }
    }

    override fun onGetTemplate(): Template {
+        buildingToggleState = settingsViewModel.threedBuilding.value
        val listBuilder = ItemList.Builder()
        val buildingToggle: Toggle =
            Toggle.Builder { checked: Boolean ->
-                if (checked) {
-                    setBooleanKeyValue(carContext, true, SHOW_THREED_BUILDING)
-                } else {
-                    setBooleanKeyValue(carContext, false, SHOW_THREED_BUILDING)
-                }
+                settingsViewModel.onThreedBuildingChanged(checked)
                buildingToggleState = !buildingToggleState
            }.setChecked(buildingToggleState).build()
        listBuilder.addItem(buildRowForTemplate(R.string.threed_building, buildingToggle))
--- a/common/car/src/main/java/com/kouros/navigation/car/screen/NavigationScreen.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/screen/NavigationScreen.kt
@@ -22,6 +22,7 @@ import androidx.car.app.navigation.model.NavigationTemplate
 import androidx.car.app.navigation.model.RoutingInfo
 import androidx.core.graphics.drawable.IconCompat
 import androidx.lifecycle.Observer
+import androidx.lifecycle.lifecycleScope
 import com.kouros.data.R
 import com.kouros.navigation.car.SurfaceRenderer
 import com.kouros.navigation.car.ViewStyle
@@ -29,11 +30,18 @@ import com.kouros.navigation.car.navigation.RouteCarModel
 import com.kouros.navigation.data.Constants
 import com.kouros.navigation.data.Constants.DESTINATION_ARRIVAL_DISTANCE
 import com.kouros.navigation.data.Place
+import com.kouros.navigation.data.datastore.DataStoreManager
 import com.kouros.navigation.data.nominatim.SearchResult
 import com.kouros.navigation.data.overpass.Elements
-import com.kouros.navigation.model.ViewModel
+import com.kouros.navigation.model.NavigationViewModel
+import com.kouros.navigation.repository.SettingsRepository
 import com.kouros.navigation.utils.GeoUtils
+import com.kouros.navigation.utils.getSettingsViewModel
 import com.kouros.navigation.utils.location
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
+import java.time.Duration
 import java.time.LocalDateTime
 import java.time.ZoneOffset
 import kotlin.math.absoluteValue
@@ -43,21 +51,21 @@ class NavigationScreen(
    private var surfaceRenderer: SurfaceRenderer,
    private var routeModel: RouteCarModel,
    private var listener: Listener,
-    private val viewModel: ViewModel
+    private val navigationViewModel: NavigationViewModel
 ) :
    Screen(carContext) {

    /** A listener for navigation start and stop signals.  */
    interface Listener {
        /** Stops navigation.  */
-        fun stopNavigation()
+        fun stopNavigation(context: CarContext)
    }

    var currentNavigationLocation = Location(LocationManager.GPS_PROVIDER)
    var recentPlace = Place()
    var navigationType = NavigationType.VIEW

-    var lastTrafficDate = LocalDateTime.of(1960, 6, 21, 0, 0)
+    var lastTrafficDate: LocalDateTime? = LocalDateTime.of(1960, 6, 21, 0, 0)
    val observer = Observer<String> { route ->
        if (route.isNotEmpty()) {
            navigationType = NavigationType.NAVIGATION
@@ -99,7 +107,7 @@ class NavigationScreen(
        speedCameras = cameras
        val coordinates = mutableListOf<List<Double>>()
        cameras.forEach {
-            coordinates.add(listOf(it.lon!!, it.lat!!))
+            coordinates.add(listOf(it.lon, it.lat))
        }
        val speedData = GeoUtils.createPointCollection(coordinates, "radar")
        surfaceRenderer.speedCamerasData.value = speedData
@@ -107,11 +115,15 @@ class NavigationScreen(


    init {
-        viewModel.route.observe(this, observer)
-        viewModel.traffic.observe(this, trafficObserver);
-        viewModel.recentPlace.observe(this, recentObserver)
-        viewModel.placeLocation.observe(this, placeObserver)
-        viewModel.speedCameras.observe(this, speedObserver)
+        navigationViewModel.route.observe(this, observer)
+        navigationViewModel.traffic.observe(this, trafficObserver);
+        navigationViewModel.recentPlace.observe(this, recentObserver)
+        navigationViewModel.placeLocation.observe(this, placeObserver)
+        navigationViewModel.speedCameras.observe(this, speedObserver)
+        lifecycleScope.launch {
+            getSettingsViewModel(carContext).routingEngine.collect {
+            }
+        }
    }

    override fun onGetTemplate(): Template {
@@ -306,7 +318,7 @@ class NavigationScreen(
            )
            .setOnClickListener {
                val navigateTo = location(recentPlace.longitude, recentPlace.latitude)
-                viewModel.loadRoute(
+                navigationViewModel.loadRoute(
                    carContext,
                    surfaceRenderer.lastLocation,
                    navigateTo,
@@ -349,7 +361,7 @@ class NavigationScreen(
        return Action.Builder()
            .setIcon(routeModel.createCarIcon(carContext, R.drawable.settings_48px))
            .setOnClickListener {
-                screenManager.push(SettingsScreen(carContext, viewModel))
+                screenManager.push(SettingsScreen(carContext, navigationViewModel))
            }
            .build()
    }
@@ -411,13 +423,13 @@ class NavigationScreen(
                SearchScreen(
                    carContext,
                    surfaceRenderer,
-                    viewModel
+                    navigationViewModel
                )
            ) { obj: Any? ->
                if (obj != null) {
                    val place = obj as Place
                    if (place.longitude == 0.0) {
-                        viewModel.findAddress(
+                        navigationViewModel.findAddress(
                            "${obj.city} ${obj.street}},",
                            currentNavigationLocation
                        )
@@ -432,9 +444,9 @@ class NavigationScreen(
    fun navigateToPlace(place: Place) {
        navigationType = NavigationType.VIEW
        val location = location(place.longitude, place.latitude)
-        viewModel.saveRecent(place)
+        navigationViewModel.saveRecent(place)
        currentNavigationLocation = location
-        viewModel.loadRoute(
+        navigationViewModel.loadRoute(
            carContext,
            surfaceRenderer.lastLocation,
            location,
@@ -446,7 +458,7 @@ class NavigationScreen(

    fun stopNavigation() {
        navigationType = NavigationType.VIEW
-        listener.stopNavigation()
+        listener.stopNavigation(carContext)
        surfaceRenderer.routeData.value = ""
        lastCameraSearch = 0
        invalidate()
@@ -470,7 +482,7 @@ class NavigationScreen(

    fun reRoute(destination: Place) {
        val dest = location(destination.longitude, destination.latitude)
-        viewModel.loadRoute(
+        navigationViewModel.loadRoute(
            carContext,
            surfaceRenderer.lastLocation,
            dest,
@@ -480,14 +492,14 @@ class NavigationScreen(

    fun updateTrip(location: Location) {
        val current = LocalDateTime.now(ZoneOffset.UTC)
-        val duration = java.time.Duration.between(current, lastTrafficDate)
+        val duration = Duration.between(current, lastTrafficDate)
        if (duration.abs().seconds > 360) {
            lastTrafficDate = current
-            viewModel.loadTraffic(carContext, location, surfaceRenderer.carOrientation)
+            navigationViewModel.loadTraffic(carContext, location, surfaceRenderer.carOrientation)
        }
        updateSpeedCamera(location)
        with(routeModel) {
-            updateLocation(location, viewModel)
+            updateLocation(carContext,location, navigationViewModel)
            if ((navState.maneuverType == Maneuver.TYPE_DESTINATION
                        || navState.maneuverType == Maneuver.TYPE_DESTINATION_LEFT
                        || navState.maneuverType == Maneuver.TYPE_DESTINATION_RIGHT
@@ -506,7 +518,7 @@ class NavigationScreen(

    private fun updateSpeedCamera(location: Location) {
        if (lastCameraSearch++ % 100 == 0) {
-            viewModel.getSpeedCameras(location, 5.0)
+            navigationViewModel.getSpeedCameras(location, 5.0)
        }
        if (speedCameras.isNotEmpty()) {
            updateDistance(location)
--- a/common/car/src/main/java/com/kouros/navigation/car/screen/NavigationSettings.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/screen/NavigationSettings.kt
@@ -9,16 +9,14 @@ import androidx.car.app.model.ListTemplate
 import androidx.car.app.model.Row
 import androidx.car.app.model.Template
 import androidx.car.app.model.Toggle
+import androidx.lifecycle.lifecycleScope
 import com.kouros.data.R
-import com.kouros.navigation.data.Constants.AVOID_MOTORWAY
-import com.kouros.navigation.data.Constants.AVOID_TOLLWAY
-import com.kouros.navigation.data.Constants.CAR_LOCATION
-import com.kouros.navigation.model.ViewModel
-import com.kouros.navigation.utils.NavigationUtils.getBooleanKeyValue
-import com.kouros.navigation.utils.NavigationUtils.setBooleanKeyValue
+import com.kouros.navigation.model.NavigationViewModel
+import com.kouros.navigation.utils.getSettingsViewModel
+import kotlinx.coroutines.launch


-class NavigationSettings(private val carContext: CarContext, private var viewModel: ViewModel) :
+class NavigationSettings(private val carContext: CarContext, private var navigationViewModel: NavigationViewModel) :
    Screen(carContext) {

    private var motorWayToggleState = false
@@ -27,25 +25,25 @@ class NavigationSettings(private val carContext: CarContext, private var viewMod

    private var carLocationToggleState = false

+    val settingsViewModel = getSettingsViewModel(carContext)

    init {
-        motorWayToggleState = getBooleanKeyValue(carContext, AVOID_MOTORWAY)
-
-        tollWayToggleState = getBooleanKeyValue(carContext, AVOID_MOTORWAY)
-
-        carLocationToggleState = getBooleanKeyValue(carContext, CAR_LOCATION)
-
+        lifecycleScope.launch {
+            settingsViewModel.avoidTollway.collect {
+                invalidate()
+            }
+        }
    }

    override fun onGetTemplate(): Template {
+        motorWayToggleState = settingsViewModel.avoidMotorway.value
+        tollWayToggleState = settingsViewModel.avoidTollway.value
+        carLocationToggleState = settingsViewModel.carLocation.value
+
        val listBuilder = ItemList.Builder()
        val highwayToggle: Toggle =
            Toggle.Builder { checked: Boolean ->
-                if (checked) {
-                    setBooleanKeyValue(carContext, true, AVOID_MOTORWAY)
-                } else {
-                    setBooleanKeyValue(carContext, false, AVOID_MOTORWAY)
-                }
+                settingsViewModel.onAvoidMotorway(checked)
                motorWayToggleState = !motorWayToggleState
            }.setChecked(motorWayToggleState).build()
        listBuilder.addItem(buildRowForTemplate(R.string.avoid_highways_row_title, highwayToggle))
@@ -53,22 +51,14 @@ class NavigationSettings(private val carContext: CarContext, private var viewMod
        // Tollway
        val tollwayToggle: Toggle =
            Toggle.Builder { checked: Boolean ->
-                if (checked) {
-                    setBooleanKeyValue(carContext, true, AVOID_TOLLWAY)
-                } else {
-                    setBooleanKeyValue(carContext, false, AVOID_TOLLWAY)
-                }
+                settingsViewModel.onAvoidTollway(checked)
                tollWayToggleState = !tollWayToggleState
            }.setChecked(tollWayToggleState).build()
        listBuilder.addItem(buildRowForTemplate(R.string.avoid_tolls_row_title, tollwayToggle))

        val carLocationToggle: Toggle =
            Toggle.Builder { checked: Boolean ->
-                if (checked) {
-                    setBooleanKeyValue(carContext, true, CAR_LOCATION)
-                } else {
-                    setBooleanKeyValue(carContext, false, CAR_LOCATION)
-                }
+                settingsViewModel.onCarLocation(checked)
                carLocationToggleState = !carLocationToggleState
            }.setChecked(carLocationToggleState).build()

@@ -81,7 +71,7 @@ class NavigationSettings(private val carContext: CarContext, private var viewMod

        listBuilder.addItem(
            buildRowForScreenTemplate(
-                RoutingSettings(carContext, viewModel),
+                RoutingSettings(carContext, navigationViewModel),
                R.string.routing_engine
            )
        )
--- a/common/car/src/main/java/com/kouros/navigation/car/screen/PlaceListScreen.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/screen/PlaceListScreen.kt
@@ -1,6 +1,5 @@
 package com.kouros.navigation.car.screen

-import android.location.Location
 import android.net.Uri
 import android.text.Spannable
 import android.text.SpannableString
@@ -25,14 +24,14 @@ import com.kouros.navigation.data.Constants.CONTACTS
 import com.kouros.navigation.data.Constants.FAVORITES
 import com.kouros.navigation.data.Constants.RECENT
 import com.kouros.navigation.data.Place
-import com.kouros.navigation.model.ViewModel
+import com.kouros.navigation.model.NavigationViewModel


 class PlaceListScreen(
    private val carContext: CarContext,
    private val surfaceRenderer: SurfaceRenderer,
    private val category: String,
-    private val viewModel: ViewModel
+    private val navigationViewModel: NavigationViewModel
 ) : Screen(carContext) {

    var places = listOf<Place>()
@@ -49,30 +48,30 @@ class PlaceListScreen(

    init {
        if (category == RECENT) {
-            viewModel.places.observe(this, observer)
+            navigationViewModel.places.observe(this, observer)
        }
        if (category == CONTACTS) {
-            viewModel.contactAddress.observe(this, observerAddress)
+            navigationViewModel.contactAddress.observe(this, observerAddress)
        }
        if (category == FAVORITES) {
-            viewModel.favorites.observe(this, observer)
+            navigationViewModel.favorites.observe(this, observer)
        }
        loadPlaces()
    }

    fun loadPlaces() {
        if (category == RECENT) {
-            viewModel.loadRecentPlaces(
+            navigationViewModel.loadRecentPlaces(
                carContext,
                surfaceRenderer.lastLocation,
                surfaceRenderer.carOrientation
            )
        }
        if (category == CONTACTS) {
-            viewModel.loadContacts(carContext)
+            navigationViewModel.loadContacts(carContext)
        }
        if (category == FAVORITES) {
-            viewModel.loadFavorites(
+            navigationViewModel.loadFavorites(
                carContext,
                surfaceRenderer.lastLocation,
                surfaceRenderer.carOrientation
@@ -110,7 +109,7 @@ class PlaceListScreen(
                                carContext,
                                surfaceRenderer,
                                place,
-                                viewModel
+                                navigationViewModel
                            )
                        ) { obj: Any? ->
                            if (obj != null) {
@@ -163,7 +162,7 @@ class PlaceListScreen(
            )
        )
        .setOnClickListener {
-            viewModel.deletePlace(place)
+            navigationViewModel.deletePlace(place)
            CarToast.makeText(
                carContext,
                R.string.recent_Item_deleted, CarToast.LENGTH_LONG
--- a/common/car/src/main/java/com/kouros/navigation/car/screen/RoutePreviewScreen.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/screen/RoutePreviewScreen.kt
@@ -6,7 +6,6 @@ import androidx.annotation.DrawableRes
 import androidx.car.app.CarContext
 import androidx.car.app.CarToast
 import androidx.car.app.Screen
-import androidx.car.app.constraints.ConstraintManager
 import androidx.car.app.model.Action
 import androidx.car.app.model.Action.FLAG_DEFAULT
 import androidx.car.app.model.ActionStrip
@@ -29,7 +28,7 @@ import com.kouros.navigation.car.SurfaceRenderer
 import com.kouros.navigation.car.navigation.NavigationMessage
 import com.kouros.navigation.car.navigation.RouteCarModel
 import com.kouros.navigation.data.Place
-import com.kouros.navigation.model.ViewModel
+import com.kouros.navigation.model.NavigationViewModel
 import com.kouros.navigation.utils.location
 import java.math.BigDecimal
 import java.math.RoundingMode
@@ -39,7 +38,7 @@ class RoutePreviewScreen(
    carContext: CarContext,
    private var surfaceRenderer: SurfaceRenderer,
    private var destination: Place,
-    private val viewModel: ViewModel
+    private val navigationViewModel: NavigationViewModel
 ) :
    Screen(carContext) {
    private var isFavorite = false
@@ -56,9 +55,9 @@ class RoutePreviewScreen(
    }

    init {
-        viewModel.previewRoute.observe(this, observer)
+        navigationViewModel.previewRoute.observe(this, observer)
        val location = location(destination.longitude, destination.latitude)
-        viewModel.loadPreviewRoute(
+        navigationViewModel.loadPreviewRoute(
            carContext,
            surfaceRenderer.lastLocation,
            location,
@@ -164,7 +163,7 @@ class RoutePreviewScreen(
                CarToast.LENGTH_SHORT
            )
                .show()
-            viewModel.saveFavorite(destination)
+            navigationViewModel.saveFavorite(destination)
            invalidate()
        }
        .build()
@@ -172,7 +171,7 @@ class RoutePreviewScreen(
    private fun deleteFavoriteAction(): Action = Action.Builder()
        .setOnClickListener {
            if (isFavorite) {
-                viewModel.deleteFavorite(destination)
+                navigationViewModel.deleteFavorite(destination)
            }
            isFavorite = !isFavorite
            finish()
--- a/common/car/src/main/java/com/kouros/navigation/car/screen/RoutingSettings.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/screen/RoutingSettings.kt
@@ -10,28 +10,28 @@ import androidx.car.app.model.ListTemplate
 import androidx.car.app.model.Row
 import androidx.car.app.model.SectionedItemList
 import androidx.car.app.model.Template
-import androidx.car.app.model.Toggle
+import androidx.lifecycle.lifecycleScope
 import com.kouros.data.R
-import com.kouros.navigation.data.Constants.AVOID_MOTORWAY
-import com.kouros.navigation.data.Constants.CAR_LOCATION
-import com.kouros.navigation.data.Constants.ROUTING_ENGINE
 import com.kouros.navigation.data.RouteEngine
-import com.kouros.navigation.model.ViewModel
-import com.kouros.navigation.utils.NavigationUtils.getBooleanKeyValue
-import com.kouros.navigation.utils.NavigationUtils.getIntKeyValue
-import com.kouros.navigation.utils.NavigationUtils.setBooleanKeyValue
-import com.kouros.navigation.utils.NavigationUtils.setIntKeyValue
+import com.kouros.navigation.model.NavigationViewModel
+import com.kouros.navigation.utils.getSettingsViewModel
+import kotlinx.coroutines.launch

-class RoutingSettings(private val carContext: CarContext, private var viewModel: ViewModel) : Screen(carContext) {
+class RoutingSettings(private val carContext: CarContext, private var navigationViewModel: NavigationViewModel) : Screen(carContext) {
    private var routingEngine = RouteEngine.OSRM.ordinal

+    val settingsViewModel = getSettingsViewModel(carContext)

    init {
-        routingEngine = getIntKeyValue(carContext, ROUTING_ENGINE)
-
+        lifecycleScope.launch {
+            settingsViewModel.routingEngine.collect {
+                invalidate()
+            }
+        }
    }

    override fun onGetTemplate(): Template {
+        routingEngine = settingsViewModel.routingEngine.value
        val templateBuilder = ListTemplate.Builder()
        val radioList =
            ItemList.Builder()
@@ -71,8 +71,8 @@ class RoutingSettings(private val carContext: CarContext, private var viewModel:
    }

    private fun onSelected(index: Int) {
-        setIntKeyValue(carContext, index, ROUTING_ENGINE)
-        viewModel.routingEngine.value = index
+        settingsViewModel.onRoutingEngineChanged(index)
+        navigationViewModel.routingEngine.value = index
        CarToast.makeText(
            carContext,
            (carContext
--- a/common/car/src/main/java/com/kouros/navigation/car/screen/SearchScreen.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/screen/SearchScreen.kt
@@ -1,7 +1,6 @@
 package com.kouros.navigation.car.screen

 import android.annotation.SuppressLint
-import android.location.Location
 import androidx.car.app.CarContext
 import androidx.car.app.Screen
 import androidx.car.app.model.Action
@@ -16,18 +15,17 @@ import androidx.lifecycle.Observer
 import com.kouros.data.R
 import com.kouros.navigation.car.SurfaceRenderer
 import com.kouros.navigation.car.ViewStyle
-import com.kouros.navigation.car.navigation.RouteCarModel
 import com.kouros.navigation.data.Category
 import com.kouros.navigation.data.Constants
 import com.kouros.navigation.data.Place
 import com.kouros.navigation.data.nominatim.SearchResult
-import com.kouros.navigation.model.ViewModel
+import com.kouros.navigation.model.NavigationViewModel


 class SearchScreen(
    carContext: CarContext,
    private var surfaceRenderer: SurfaceRenderer,
-    private val viewModel: ViewModel,
+    private val navigationViewModel: NavigationViewModel,
 ) : Screen(carContext) {

    var isSearchComplete: Boolean = false
@@ -47,7 +45,7 @@ class SearchScreen(
    }

    init {
-        viewModel.searchPlaces.observe(this, observer)
+        navigationViewModel.searchPlaces.observe(this, observer)
    }

    override fun onGetTemplate(): Template {
@@ -71,7 +69,7 @@ class SearchScreen(
                                        CategoriesScreen(
                                            carContext,
                                            surfaceRenderer,
-                                            viewModel
+                                            navigationViewModel
                                        )
                                    ) { obj: Any? ->
                                        surfaceRenderer.viewStyle = ViewStyle.VIEW
@@ -87,7 +85,7 @@ class SearchScreen(
                                            carContext,
                                            surfaceRenderer,
                                            it.id,
-                                            viewModel
+                                            navigationViewModel
                                        )
                                    ) { obj: Any? ->
                                        if (obj != null) {
@@ -115,7 +113,7 @@ class SearchScreen(
            object : SearchCallback {
                override fun onSearchSubmitted(searchTerm: String) {
                    isSearchComplete = true
-                    viewModel.searchPlaces(searchTerm, surfaceRenderer.lastLocation)
+                    navigationViewModel.searchPlaces(searchTerm, surfaceRenderer.lastLocation)
                }
            })
            .setHeaderAction(Action.BACK)
--- a/common/car/src/main/java/com/kouros/navigation/car/screen/SettingsScreen.kt
+++ b/common/car/src/main/java/com/kouros/navigation/car/screen/SettingsScreen.kt
@@ -24,12 +24,12 @@ import androidx.car.app.model.ListTemplate
 import androidx.car.app.model.Row
 import androidx.car.app.model.Template
 import com.kouros.data.R
-import com.kouros.navigation.model.ViewModel
+import com.kouros.navigation.model.NavigationViewModel

 /** A screen demonstrating selectable lists.  */
 class SettingsScreen(
    carContext: CarContext,
-    private var viewModel: ViewModel,
+    private var navigationViewModel: NavigationViewModel,
 ) : Screen(carContext) {

    override fun onGetTemplate(): Template {
@@ -42,7 +42,7 @@ class SettingsScreen(
        )
        listBuilder.addItem(
            buildRowForTemplate(
-                NavigationSettings(carContext, viewModel),
+                NavigationSettings(carContext, navigationViewModel),
                R.string.navigation_settings
            )
        )
--- a/common/car/src/test/java/com/kouros/navigation/car/UnitTest.kt
+++ b/common/car/src/test/java/com/kouros/navigation/car/UnitTest.kt
@@ -2,7 +2,7 @@ package com.kouros.navigation.car

 import com.kouros.navigation.data.valhalla.ValhallaRepository
 import com.kouros.navigation.model.RouteModel
-import com.kouros.navigation.model.ViewModel
+import com.kouros.navigation.model.NavigationViewModel
 import org.junit.Test

 /**
@@ -12,7 +12,7 @@ import org.junit.Test
 class ViewModelTest {

    val repo = ValhallaRepository()
-    val viewModel = ViewModel(repo)
+    val navigationViewModel = NavigationViewModel(repo)
    val model = RouteModel()

    @Test