刷新FireStore GET订阅中的数据- Angular - Firebase/FireStore

import { Component } from '@angular/core';
import { AngularFirestore } from '@angular/fire/firestore';

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.css']
})
export class ExampleComponent {
  constructor(private firestore: AngularFirestore) { }
}

data: any[];

ngOnInit() {
  this.firestore.collection('collectionName').get().subscribe((querySnapshot) => {
    this.data = querySnapshot.docs.map((doc) => doc.data());
  });
}

refreshData() {
  this.firestore.collection('collectionName').get().subscribe((querySnapshot) => {
    this.data = querySnapshot.docs.map((doc) => doc.data());
  });
}

<div *ngFor="let item of data">
  {{ item.property }}
</div>

<button (click)="refreshData()">刷新数据</button>