Make ReplayRouteSession handle route changes

Author: kmadsen

android-auto-app/build.gradle

@@ -72,8 +72,9 @@ dependencies {
     // This example is used for development so it may depend on unstable versions.
     // Examples based on final versions can be found in the examples repository.
     //   https://github.com/mapbox/mapbox-navigation-android-examples
-    implementation("com.mapbox.navigation:ui-dropin:2.10.0-rc.1")
-    implementation("com.mapbox.search:mapbox-search-android:1.0.0-beta.42")
+    implementation project(':libnavui-dropin')
+//    implementation("com.mapbox.navigation:ui-dropin:2.10.0")
+    implementation("com.mapbox.search:mapbox-search-android:1.0.0-beta.43")
 
     // Dependencies needed for this example.
     implementation dependenciesList.androidXCore

android-auto-app/src/main/java/com/mapbox/navigation/examples/androidauto/car/MainCarSession.kt

@@ -1,16 +1,13 @@
 package com.mapbox.navigation.examples.androidauto.car
 
-import android.annotation.SuppressLint
 import android.content.Intent
 import android.content.res.Configuration
 import androidx.car.app.Screen
 import androidx.car.app.Session
 import androidx.car.app.model.ActionStrip
 import androidx.lifecycle.DefaultLifecycleObserver
-import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LifecycleOwner
 import androidx.lifecycle.lifecycleScope
-import androidx.lifecycle.repeatOnLifecycle
 import com.mapbox.android.core.permissions.PermissionsManager
 import com.mapbox.androidauto.MapboxCarContext
 import com.mapbox.androidauto.action.MapboxScreenActionStripProvider
@@ -29,12 +26,11 @@ import com.mapbox.maps.applyDefaultParams
 import com.mapbox.maps.extension.androidauto.MapboxCarMap
 import com.mapbox.navigation.base.ExperimentalPreviewMapboxNavigationAPI
 import com.mapbox.navigation.core.lifecycle.MapboxNavigationApp
-import com.mapbox.navigation.core.lifecycle.requireMapboxNavigation
-import com.mapbox.navigation.core.replay.route.ReplayRouteSession
-import com.mapbox.navigation.core.trip.session.TripSessionState
+import com.mapbox.navigation.core.trip.MapboxTripStarter
 import com.mapbox.navigation.examples.androidauto.CarAppSyncComponent
-import kotlinx.coroutines.flow.collect
-import kotlinx.coroutines.launch
+import kotlinx.coroutines.flow.filter
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
 
 @OptIn(ExperimentalPreviewMapboxNavigationAPI::class)
 class MainCarSession : Session() {
@@ -57,10 +53,11 @@ class MainCarSession : Session() {
                 }
             }
         }
-    private val mapboxNavigation by requireMapboxNavigation()
-    private val replayRouteSession = ReplayRouteSession()
+    private val mapboxTripStarter = MapboxTripStarter.getRegisteredInstance()
 
     init {
+        MapboxNavigationApp.attach(this)
+
         // Decide how you want the car and app to interact. In this example, the car and app
         // are kept in sync where they essentially mirror each other.
         CarAppSyncComponent.getInstance().setCarSession(this)
@@ -143,31 +140,9 @@ class MainCarSession : Session() {
     // computer terminal.
     // adb shell dumpsys activity service com.mapbox.navigation.examples.androidauto.car.MainCarAppService AUTO_DRIVE
     private fun observeAutoDrive() {
-        lifecycleScope.launch {
-            lifecycle.repeatOnLifecycle(Lifecycle.State.STARTED) {
-                mapboxCarContext.mapboxNavigationManager.autoDriveEnabledFlow.collect {
-                    refreshTripSession()
-                }
-            }
-        }
-    }
-
-    @SuppressLint("MissingPermission")
-    private fun refreshTripSession() {
-        val isAutoDriveEnabled = mapboxCarContext.mapboxNavigationManager
-            .autoDriveEnabledFlow.value
-        if (!PermissionsManager.areLocationPermissionsGranted(carContext)) {
-            mapboxNavigation.stopTripSession()
-            return
-        }
-
-        if (isAutoDriveEnabled) {
-            MapboxNavigationApp.registerObserver(replayRouteSession)
-        } else {
-            MapboxNavigationApp.unregisterObserver(replayRouteSession)
-            if (mapboxNavigation.getTripSessionState() != TripSessionState.STARTED) {
-                mapboxNavigation.startTripSession()
-            }
-        }
+        mapboxCarContext.mapboxNavigationManager.autoDriveEnabledFlow
+            .filter { it }
+            .onEach { mapboxTripStarter.enableReplayRoute() }
+            .launchIn(lifecycleScope)
     }
 }

changelog/unreleased/bugfixes/6913.md

@@ -0,0 +1,3 @@
+- Make `MapboxTripStarterType.ReplayRoute` and `ReplayRouteSession` automatically move to the origin of the route after `MapboxNavigation.setNavigationRoutes`.
+- Make `ReplayRouteSession` observe the `ReplayRouteSessionOptions` so changes can be made without creating a new instance of the session.
+- Change `ReplayRouteSession.getOptions()` to return a `StateFlow` so the options can be observed.

libnavigation-core/api/current.txt

@@ -703,7 +703,7 @@ package com.mapbox.navigation.core.replay.route {
 
   @com.mapbox.navigation.base.ExperimentalPreviewMapboxNavigationAPI public final class ReplayRouteSession implements com.mapbox.navigation.core.lifecycle.MapboxNavigationObserver {
     ctor public ReplayRouteSession();
-    method public com.mapbox.navigation.core.replay.route.ReplayRouteSessionOptions getOptions();
+    method public kotlinx.coroutines.flow.StateFlow<com.mapbox.navigation.core.replay.route.ReplayRouteSessionOptions> getOptions();
     method public void onAttached(com.mapbox.navigation.core.MapboxNavigation mapboxNavigation);
     method public void onDetached(com.mapbox.navigation.core.MapboxNavigation mapboxNavigation);
     method public com.mapbox.navigation.core.replay.route.ReplayRouteSession setOptions(com.mapbox.navigation.core.replay.route.ReplayRouteSessionOptions options);

libnavigation-core/src/main/java/com/mapbox/navigation/core/replay/route/ReplayRouteSession.kt

@@ -12,7 +12,6 @@ import com.mapbox.navigation.base.route.NavigationRoute
 import com.mapbox.navigation.base.trip.model.RouteProgress
 import com.mapbox.navigation.core.MapboxNavigation
 import com.mapbox.navigation.core.directions.session.RoutesObserver
-import com.mapbox.navigation.core.history.MapboxHistoryReaderProvider
 import com.mapbox.navigation.core.lifecycle.MapboxNavigationApp
 import com.mapbox.navigation.core.lifecycle.MapboxNavigationObserver
 import com.mapbox.navigation.core.replay.MapboxReplayer
@@ -24,6 +23,7 @@ import com.mapbox.navigation.utils.internal.logW
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
@@ -67,25 +67,33 @@ import java.util.Collections
 class ReplayRouteSession : MapboxNavigationObserver {
 
     private lateinit var replayRouteMapper: ReplayRouteMapper
+    private lateinit var coroutineScope: CoroutineScope
     private val optionsFlow = MutableStateFlow(ReplayRouteSessionOptions.Builder().build())
     private var mapboxNavigation: MapboxNavigation? = null
     private var lastLocationEvent: ReplayEventUpdateLocation? = null
     private var polylineDecodeStream: ReplayPolylineDecodeStream? = null
     private var currentRoute: NavigationRoute? = null
-    private var coroutineScope: CoroutineScope? = null
+        set(value) {
+            field = value
+            isNewRouteInitialized = value != null
+        }
+    private var isNewRouteInitialized = false
 
     private val routeProgressObserver = RouteProgressObserver { routeProgress ->
         if (currentRoute?.id != routeProgress.navigationRoute.id) {
             currentRoute = routeProgress.navigationRoute
-            onRouteChanged(routeProgress)
+            onRouteProgressRouteChanged(routeProgress)
         }
     }
 
     private val routesObserver = RoutesObserver { result ->
-        if (result.navigationRoutes.isEmpty()) {
+        val route = result.navigationRoutes.firstOrNull()
+        if (route == null) {
             mapboxNavigation?.resetReplayLocation()
             currentRoute = null
             polylineDecodeStream = null
+        } else if (!isNewRouteInitialized && currentRoute?.id != route.id) {
+            onInitializeNewRoute(route)
         }
     }
 
@@ -113,24 +121,23 @@ class ReplayRouteSession : MapboxNavigationObserver {
     }
 
     override fun onAttached(mapboxNavigation: MapboxNavigation) {
-        val coroutineScope = CoroutineScope(SupervisorJob() + Dispatchers.Main.immediate)
-            .also { this.coroutineScope = it }
+        this.coroutineScope = CoroutineScope(SupervisorJob() + Dispatchers.Main.immediate)
         this.mapboxNavigation = mapboxNavigation
         mapboxNavigation.startReplayTripSession()
-        mapboxNavigation.registerRouteProgressObserver(routeProgressObserver)
+        observeStateFlow(mapboxNavigation).launchIn(coroutineScope)
         mapboxNavigation.registerRoutesObserver(routesObserver)
+        mapboxNavigation.registerRouteProgressObserver(routeProgressObserver)
         mapboxNavigation.mapboxReplayer.registerObserver(replayEventsObserver)
-        mapboxNavigation.mapboxReplayer.play()
-        observeStateFlow(mapboxNavigation).launchIn(coroutineScope)
     }
 
     private fun observeStateFlow(mapboxNavigation: MapboxNavigation): Flow<*> {
         return optionsFlow.mapDistinct { it.replayRouteOptions }.onEach { replayRouteOptions ->
             mapboxNavigation.mapboxReplayer.clearEvents()
             this.replayRouteMapper = ReplayRouteMapper(replayRouteOptions)
-            val routes = mapboxNavigation.getNavigationRoutes()
-            mapboxNavigation.setNavigationRoutes(emptyList())
-            mapboxNavigation.setNavigationRoutes(routes)
+            currentRoute = null
+            mapboxNavigation.resetTripSession {
+                mapboxNavigation.mapboxReplayer.play()
+            }
         }
     }
 
@@ -158,6 +165,9 @@ class ReplayRouteSession : MapboxNavigationObserver {
     }
 
     override fun onDetached(mapboxNavigation: MapboxNavigation) {
+        if (this::coroutineScope.isInitialized) {
+            coroutineScope.cancel()
+        }
         mapboxNavigation.unregisterRoutesObserver(routesObserver)
         mapboxNavigation.unregisterRouteProgressObserver(routeProgressObserver)
         mapboxNavigation.mapboxReplayer.unregisterObserver(replayEventsObserver)
@@ -167,28 +177,43 @@ class ReplayRouteSession : MapboxNavigationObserver {
         this.currentRoute = null
     }
 
-    private fun onRouteChanged(routeProgress: RouteProgress) {
+    private fun onInitializeNewRoute(route: NavigationRoute) {
+        mapboxNavigation?.mapboxReplayer?.clearEvents()
+        this.replayRouteMapper = ReplayRouteMapper(optionsFlow.value.replayRouteOptions)
+        mapboxNavigation?.resetTripSession {
+            route.routeOptions.coordinatesList().firstOrNull()?.let {
+                val replayFirstLocation = replayRouteMapper.mapPointList(listOf(it))
+                mapboxNavigation?.mapboxReplayer?.pushEvents(replayFirstLocation)
+            }
+            mapboxNavigation?.mapboxReplayer?.play()
+        }
+        isNewRouteInitialized = true
+    }
+
+    private fun onRouteProgressRouteChanged(routeProgress: RouteProgress) {
         val navigationRoute = routeProgress.navigationRoute
         val mapboxReplayer = mapboxNavigation?.mapboxReplayer ?: return
         mapboxReplayer.clearEvents()
-        mapboxReplayer.play()
-        val geometries = navigationRoute.directionsRoute.routeOptions()!!.geometries()
-        val usesPolyline6 = geometries.contains(DirectionsCriteria.GEOMETRY_POLYLINE6)
-        val geometry = navigationRoute.directionsRoute.geometry()
-        if (!usesPolyline6 || geometry.isNullOrEmpty()) {
-            logW(LOG_CATEGORY) {
-                "The NavigationRouteReplay must have geometry encoded with polyline6 " +
-                    "$geometries $geometry"
+        mapboxNavigation?.resetTripSession {
+            mapboxReplayer.play()
+            val geometries = navigationRoute.directionsRoute.routeOptions()!!.geometries()
+            val usesPolyline6 = geometries.contains(DirectionsCriteria.GEOMETRY_POLYLINE6)
+            val geometry = navigationRoute.directionsRoute.geometry()
+            if (!usesPolyline6 || geometry.isNullOrEmpty()) {
+                logW(LOG_CATEGORY) {
+                    "The NavigationRouteReplay must have geometry encoded with polyline6 " +
+                        "$geometries $geometry"
+                }
+                return@resetTripSession
             }
-            return
-        }
-        polylineDecodeStream = ReplayPolylineDecodeStream(geometry, 6)
+            polylineDecodeStream = ReplayPolylineDecodeStream(geometry, 6)
 
-        // Skip up to the current geometry index. There is some imprecision here because the
-        // distance traveled is not equal to a route index.
-        polylineDecodeStream?.skip(routeProgress.currentRouteGeometryIndex)
+            // Skip up to the current geometry index. There is some imprecision here because the
+            // distance traveled is not equal to a route index.
+            polylineDecodeStream?.skip(routeProgress.currentRouteGeometryIndex)
 
-        pushMorePoints()
+            pushMorePoints()
+        }
     }
 
     private fun isLastEventPlayed(events: List<ReplayEventBase>): Boolean {

libnavigation-core/src/main/java/com/mapbox/navigation/core/trip/MapboxTripStarter.kt

@@ -37,7 +37,7 @@ import kotlinx.coroutines.flow.onEach
  */
 @ExperimentalPreviewMapboxNavigationAPI
 class MapboxTripStarter internal constructor(
-    private val services: MapboxTripStarterServices = MapboxTripStarterServices()
+    services: MapboxTripStarterServices = MapboxTripStarterServices()
 ) : MapboxNavigationObserver {
 
     private val tripType = MutableStateFlow<MapboxTripStarterType>(

libnavigation-core/src/test/java/com/mapbox/navigation/core/replay/route/ReplayRouteSessionTest.kt

@@ -145,7 +145,7 @@ class ReplayRouteSessionTest {
         sut.setOptions(firstOptions)
 
         assertNotEquals(firstOptions, initialOptions)
-        assertEquals(firstOptions, sut.getOptions())
+        assertEquals(firstOptions, sut.getOptions().value)
     }
 
     @Test
@@ -158,7 +158,7 @@ class ReplayRouteSessionTest {
         sut.setOptions(firstOptions)
 
         assertNotEquals(firstOptions, initialOptions)
-        assertEquals(firstOptions, sut.getOptions())
+        assertEquals(firstOptions, sut.getOptions().value)
     }
 
     @Test
@@ -355,7 +355,6 @@ class ReplayRouteSessionTest {
         progressObserver.captured.onRouteProgressChanged(secondRouteProgress)
 
         verify(exactly = 2) {
-            replayer.clearEvents()
             replayer.pushEvents(any())
         }
         verifyOrder {

libnavigation-core/src/test/java/com/mapbox/navigation/core/trip/MapboxTripStarterTest.kt

@@ -219,6 +219,7 @@ class MapboxTripStarterTest {
         sut.onDetached(mapboxNavigation)
 
         verifyOrder {
+            replayRouteSession.onDetached(mapboxNavigation)
             replayHistorySession.onDetached(mapboxNavigation)
             replayRouteSession.onAttached(mapboxNavigation)
             replayRouteSession.onDetached(mapboxNavigation)