优化事件处理代码

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

@@ -107,11 +107,9 @@ class AMapMarker(context: ThemedReactContext) : ReactViewGroup(context) {
 
     fun setIconView(overlay: AMapOverlay) {
         overlay.addOnLayoutChangeListener { _, _, _, _, _, _, _, _, _ -> updateIconView(overlay) }
-        overlay.setOnUpdateListener(object : AMapOverlay.OnUpdateListener {
-            override fun onUpdate() {
+        overlay.onUpdate {
             updateIconView(overlay)
         }
-        })
     }
 
     private fun updateIconView(overlay: AMapOverlay) {

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

@@ -4,17 +4,13 @@ import android.content.Context
 import com.facebook.react.views.view.ReactViewGroup
 
 class AMapOverlay(context: Context) : ReactViewGroup(context) {
-    private var onUpdateListener: OnUpdateListener? = null
+    private var updateHandler: (() -> Unit)? = null
 
-    fun setOnUpdateListener(listener: OnUpdateListener) {
-        onUpdateListener = listener
+    fun onUpdate(handler: () -> Unit) {
+        updateHandler = handler
     }
 
     fun update() {
-        onUpdateListener?.onUpdate()
-    }
-
-    interface OnUpdateListener {
-        fun onUpdate()
+        updateHandler?.invoke()
     }
 }