Update

CHANGELOG.md

@@ -1,10 +1,16 @@
 # Changes to the Mapbox Navigation SDK for iOS
 
+## v2.18.2
+
+### CarPlay
+
+* Fixed CarPlay crash when calling `CarPlayManager.routePreview()` function for iOS 14+.
+
 ## v2.18.1
 
 ### CarPlay
 
-* Fixed CarPlay crash when calling `CarPlayManager.routePreview()` function.
+* Partially fixed CarPlay crash when calling `CarPlayManager.routePreview()` function.
 
 ## v2.18.0
 

Example/ViewController.swift

@@ -237,6 +237,12 @@ class ViewController: UIViewController {
         guard let delegate = UIApplication.shared.delegate as? AppDelegate else { return }
         if let indexedRouteResponse = indexedRouteResponse {
             delegate.carPlayManager.previewRoutes(for: indexedRouteResponse)
+
+                        // debug
+                        // By enabling following lines, it makes easy to reproduce the same crash.
+                        DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) {
+                            delegate.carPlayManager.previewRoutes(for: indexedRouteResponse)
+                        }
         } else {
             delegate.carPlayManager.cancelRoutesPreview()
         }
@@ -251,7 +257,15 @@ class ViewController: UIViewController {
     }
 
     @IBAction func simulateButtonPressed(_ sender: Any) {
-        simulationButton.isSelected = !simulationButton.isSelected
+//        simulationButton.isSelected = !simulationButton.isSelected
+
+        let destinationCoordinate = CLLocationCoordinate2D(latitude: 37.957453, longitude: -122.523200)
+        let waypoint = Waypoint(coordinate: destinationCoordinate, name: "Dropped Pin #\(waypoints.endIndex + 1)")
+
+        waypoint.targetCoordinate = destinationCoordinate
+        waypoints = [waypoint]
+
+        requestRoute()
     }
 
     @IBAction func clearMapPressed(_ sender: Any) {

Sources/MapboxNavigation/CarPlayManager.swift

@@ -102,7 +102,6 @@ public class CarPlayManager: NSObject {
     private weak var navigationService: NavigationService?
     private var idleTimerCancellable: IdleTimerManager.Cancellable?
     private var indexedRouteResponse: IndexedRouteResponse?
-    private let semaphore = DispatchSemaphore(value: 1)
 
     /**
      Programatically begins a CarPlay turn-by-turn navigation session.
@@ -654,8 +653,6 @@ extension CarPlayManager {
     }
 
     func previewRoutes(for trip: CPTrip) {
-        semaphore.wait()
-        defer { semaphore.signal() }
 
         guard let traitCollection = (self.carWindow?.rootViewController as? CarPlayMapViewController)?.traitCollection,
               let interfaceController = interfaceController else {