fix kotlin check

android/map3damap/src/main/java/cn/qiuxiang/react/amap3d/AMapUtils.kt

@@ -17,7 +17,7 @@ fun ReadableMap.toLatLng(): LatLng {
 }
 
 fun ReadableArray.toLatLngList(): ArrayList<LatLng> {
-    return ArrayList((0..(this.size() - 1)).map { this.getMap(it).toLatLng() })
+    return ArrayList((0..(this.size() - 1)).map { this.getMap(it)!!.toLatLng() })
 }
 
 fun LatLng.toWritableMap(): WritableMap {

android/map3damap/src/main/java/cn/qiuxiang/react/amap3d/maps/AMapMultiPoint.kt

@@ -15,7 +15,7 @@ class AMapMultiPoint(context: Context) : ReactViewGroup(context), AMapOverlay {
     fun setPoints(points: ReadableArray) {
         items = ArrayList((0 until points.size())
                 .map {
-                    val data = points.getMap(it)
+                    val data = points.getMap(it)!!
                     val item = MultiPointItem(data.toLatLng())
                     if (data.hasKey("title")) {
                         item.title = data.getString("title")

android/map3damap/src/main/java/cn/qiuxiang/react/amap3d/maps/AMapView.kt

@@ -171,7 +171,7 @@ class AMapView(context: Context) : TextureMapView(context) {
         var rotation = currentCameraPosition.bearing
 
         if (target.hasKey("coordinate")) {
-            coordinate = target.getMap("coordinate").toLatLng()
+            coordinate = target.getMap("coordinate")?.toLatLng()
         }
 
         if (target.hasKey("zoomLevel")) {