1、修复导航point为null问题

android/src/main/kotlin/com/clx/navigation/clx_map_navigation/NavigationPlatformView.kt

@@ -39,9 +39,9 @@ class NavigationPlatformView internal constructor(
 
     init {
         Log.d(Constants.TAG, "init: viewId = $viewId args = $args")
-        val map = args as Map<*, *>
-        val startPoint = map["startPoint"] as Map<*, *>?
-        val endPoint = map["endPoint"] as Map<*, *>?
+        val map = args as Map<*, *>?
+        val startPoint = (map?.get("startPoint") ?: hashMapOf<Any, Any>()) as Map<*, *>
+        val endPoint = (map?.get("endPoint") ?: hashMapOf<Any, Any>()) as Map<*, *>
         val startLat = (startPoint["latitude"] ?: 0.0) as Double
         val startLng = (startPoint["longitude"] ?: 0.0) as Double
         val endLat = (endPoint["latitude"] ?: 0.0) as Double