优化 Kotlin 代码

android/src/main/java/cn/qiuxiang/react/amap3d/AMapInfoWindowAdapter.kt

@@ -9,8 +9,8 @@ import com.amap.api.maps.AMap.InfoWindowAdapter
 import com.amap.api.maps.model.Marker
 
 class AMapInfoWindowAdapter(
-        val context: Context,
-        val markers: HashMap<String, AMapMarker>
+        private val context: Context,
+        private val markers: HashMap<String, AMapMarker>
 ) : InfoWindowAdapter {
     val paddingTop = context.resources.displayMetrics.density
 

android/src/main/java/cn/qiuxiang/react/amap3d/AMapPolygon.kt

@@ -40,7 +40,7 @@ class AMapPolygon(context: Context) : ReactViewGroup(context) {
     private var coordinates: ArrayList<LatLng> = ArrayList()
 
     fun setCoordinates(coordinates: ReadableArray) {
-        this.coordinates = ArrayList((0..coordinates.size() - 1)
+        this.coordinates = ArrayList((0 until coordinates.size())
                 .map { coordinates.getMap(it) }
                 .map { LatLng(it.getDouble("latitude"), it.getDouble("longitude")) })
 

android/src/main/java/cn/qiuxiang/react/amap3d/AMapPolyline.kt

@@ -49,7 +49,7 @@ class AMapPolyline(context: Context) : ReactViewGroup(context) {
     private var colors: ArrayList<Int> = ArrayList()
 
     fun setCoordinates(coordinates: ReadableArray) {
-        this.coordinates = ArrayList((0..coordinates.size() - 1)
+        this.coordinates = ArrayList((0 until coordinates.size())
                 .map { coordinates.getMap(it) }
                 .map { LatLng(it.getDouble("latitude"), it.getDouble("longitude")) })
 

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

@@ -168,7 +168,7 @@ class AMapView(context: Context) : TextureMapView(context) {
         }
     }
 
-    val animateCallback = object: AMap.CancelableCallback {
+    private val animateCallback = object: AMap.CancelableCallback {
         override fun onCancel() {
             emit(id, "onAnimateCancel")
         }