Angular Mat拖放检测何时在div上停止拖动

<!-- 在模板中引入Angular Material的拖放模块 -->
<div cdkDropList (cdkDropListDropped)="onDrop($event)">
  <div cdkDrag (cdkDragEnded)="onDragEnd($event)">拖动我</div>
</div>

import { Component } from '@angular/core';
import { CdkDragEnd } from '@angular/cdk/drag-drop';

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.css']
})
export class ExampleComponent {
  onDrop(event: any) {
    // 拖放完成时触发的函数
  }

  onDragEnd(event: CdkDragEnd) {
    // 拖动结束时触发的函数
    if (event.source._dragRef._activeTransform) {
      // 判断是否在div上停止拖动
      console.log('拖动停止在div上');
    }
  }
}