feat: add foreground service example for android

Author: jokerttu

android/src/main/kotlin/com/google/maps/flutter/navigation/AndroidAutoBaseScreen.kt

@@ -55,7 +55,9 @@ open class AndroidAutoBaseScreen(carContext: CarContext) :
 
   private fun initializeNavigationListener() {
     GoogleMapsNavigationSessionManager.navigationReadyListener = this
-    mIsNavigationReady = GoogleMapsNavigatorHolder.getInitializationState() == GoogleNavigatorInitializationState.INITIALIZED
+    mIsNavigationReady =
+      GoogleMapsNavigatorHolder.getInitializationState() ==
+        GoogleNavigatorInitializationState.INITIALIZED
   }
 
   private fun initializeSurfaceCallback() {

android/src/main/kotlin/com/google/maps/flutter/navigation/GoogleMapsNavigationInspectorHandler.kt

@@ -14,13 +14,13 @@
 
 package com.google.maps.flutter.navigation
 
-class GoogleMapsNavigationInspectorHandler(
-  private val viewRegistry: GoogleMapsViewRegistry
-) : NavigationInspector {
+class GoogleMapsNavigationInspectorHandler(private val viewRegistry: GoogleMapsViewRegistry) :
+  NavigationInspector {
   override fun isViewAttachedToSession(viewId: Long): Boolean {
     /// Is session exists, it's automatically attached to any existing view.
     if (viewRegistry.getNavigationView(viewId.toInt()) != null) {
-      return GoogleMapsNavigatorHolder.getInitializationState() == GoogleNavigatorInitializationState.INITIALIZED
+      return GoogleMapsNavigatorHolder.getInitializationState() ==
+        GoogleNavigatorInitializationState.INITIALIZED
     }
     return false
   }

android/src/main/kotlin/com/google/maps/flutter/navigation/GoogleMapsNavigationPlugin.kt

@@ -16,6 +16,7 @@
 
 package com.google.maps.flutter.navigation
 
+import android.app.Application
 import androidx.lifecycle.Lifecycle
 import io.flutter.embedding.engine.plugins.FlutterPlugin
 import io.flutter.embedding.engine.plugins.activity.ActivityAware
@@ -40,14 +41,15 @@ class GoogleMapsNavigationPlugin : FlutterPlugin, ActivityAware {
   private var viewMessageHandler: GoogleMapsViewMessageHandler? = null
   private var imageRegistryMessageHandler: GoogleMapsImageRegistryMessageHandler? = null
   private var autoViewMessageHandler: GoogleMapsAutoViewMessageHandler? = null
-  
+
   // Instance-level session manager instead of singleton
   internal var sessionManager: GoogleMapsNavigationSessionManager? = null
 
   private var lifecycle: Lifecycle? = null
 
   override fun onAttachedToEngine(binding: FlutterPlugin.FlutterPluginBinding) {
-    // Store first instance of the plugin so that Android Auto will get access to the correct object instances.
+    // Store first instance of the plugin so that Android Auto will get access to the correct object
+    // instances.
     if (instance == null) {
       instance = this
     }
@@ -68,19 +70,20 @@ class GoogleMapsNavigationPlugin : FlutterPlugin, ActivityAware {
     AutoMapViewApi.setUp(binding.binaryMessenger, autoViewMessageHandler)
     autoViewEventApi = AutoViewEventApi(binding.binaryMessenger)
 
-    // Setup navigation session manager (instance-level, not singleton)
+    // Setup navigation session manager
+    val app = binding.applicationContext as Application
     val navigationSessionEventApi = NavigationSessionEventApi(binding.binaryMessenger)
-    sessionManager = GoogleMapsNavigationSessionManager(navigationSessionEventApi)
+    sessionManager = GoogleMapsNavigationSessionManager(navigationSessionEventApi, app)
 
     // Setup platform view factory and its method channel handlers
     viewEventApi = ViewEventApi(binding.binaryMessenger)
     val factory = GoogleMapsViewFactory(viewRegistry!!, viewEventApi!!, imageRegistry!!)
     binding.platformViewRegistry.registerViewFactory("google_navigation_flutter", factory)
-    
+
     // Setup navigation session message handler with this instance's session manager
     val sessionMessageHandler = GoogleMapsNavigationSessionMessageHandler(sessionManager!!)
     NavigationSessionApi.setUp(binding.binaryMessenger, sessionMessageHandler)
-    
+
     val inspectorHandler = GoogleMapsNavigationInspectorHandler(viewRegistry!!)
     NavigationInspector.setUp(binding.binaryMessenger, inspectorHandler)
   }