fix 初始化

lib/android/src/main/java/cn/qiuxiang/react/amap3d/maps/AMapPathPolyline.kt

@@ -26,6 +26,11 @@ class AMapPathPolyline(context: Context) : ReactViewGroup(context), AMapOverlay
     //private var bitmapDescriptor1: BitmapDescriptor? = null
     //private var bitmapDescriptor2: BitmapDescriptor? = null
 
+    var imageName: String = ""
+        set(value){
+            field = value
+        }
+
     var width: Float = 1f
         set(value) {
             field = value
@@ -68,6 +73,7 @@ class AMapPathPolyline(context: Context) : ReactViewGroup(context), AMapOverlay
     }
 
     fun setImage(name: String) {
+        imageName = name
         val drawable = context.resources.getIdentifier(name, "drawable", context.packageName)
         //val drawable1 = context.resources.getIdentifier("p16x16_1", "drawable", context.packageName)
         //val drawable2 = context.resources.getIdentifier("p16x16_1", "drawable", context.packageName)