Added guarantee that CLLocationManager is created on the main thread.

Author: Tom Daniel

LocoKit/Base/Helpers/MiscTools.swift

@@ -8,11 +8,12 @@
 
 import Foundation
 
-public func onMain(_ closure: @escaping () -> ()) {
+public func onMain(sync: Bool = false, _ closure: @escaping () -> ()) {
     if Thread.isMainThread {
         closure()
     } else {
-        DispatchQueue.main.async(execute: closure)
+        sync ? DispatchQueue.main.sync(execute: closure)
+            : DispatchQueue.main.async(execute: closure)
     }
 }
 

LocoKit/Base/LocomotionManager.swift

@@ -467,12 +467,19 @@ import LocoKitCore
      untimely deaths of small cute animals in Madagascar.
      */
     @objc public private(set) lazy var locationManager: CLLocationManager = {
-        let manager = CLLocationManager()
-        manager.distanceFilter = kCLDistanceFilterNone
-        manager.desiredAccuracy = self.maximumDesiredLocationAccuracy
-        manager.pausesLocationUpdatesAutomatically = false
-        
-        manager.delegate = self
+        var manager: CLLocationManager!
+
+        // Problems may occur if CLLocationManager is not created on the main thread
+        onMain(sync: true) {
+            manager = CLLocationManager()
+            manager.distanceFilter = kCLDistanceFilterNone
+            manager.desiredAccuracy = self.maximumDesiredLocationAccuracy
+            manager.pausesLocationUpdatesAutomatically = false
+
+            manager.delegate = self
+
+        }
+
         return manager
     }()