添加注释

src/app/working-area/working-area.component.ts

@@ -238,6 +238,10 @@ export class WorkingAreaComponent extends EventEmitter implements OnInit, AfterV
       }
     });
   }
+  /**
+   * 根据id刷新图标
+   * @param id 图标数据id
+   */
   public refreshIcon(id: string): void {
     const icon = this.backgroundImage.children.find(item => item.name === id);
     if (icon instanceof SinglePointIcon) {