icontext 事件在up中处理

src/LocationPointScene.ts

@@ -163,7 +163,7 @@ export class LocationPointScene extends FloorScene {
      */
     iconClick(_this: any, fn: Function): void {
         this.iconList.forEach(t => {
-            t.connect("onMouseDown", _this, fn);
+            t.connect("onMouseUp", _this, fn);
         });
     }